| Common Name | Scientific Name | Code |
|---|
| n/a | Arenaria ciliata L. [excluded] | ARCI12 |
| n/a | Arenaria gothica Fr. | ARGO3 |
| n/a | Arenaria norvegica Gunnerus | ARNO3 |
| n/a | Arenaria procera Spreng. | ARPR13 |
| n/a | Arenaria procera Spreng. ssp. procera | ARPRP2 |
| n/a | Cerastium pumilum W. Curtis ssp. pallens (F.W. Schultz) Schinz & Thellung [excluded] | CEPUP7 |
| n/a | Dianthus arenarius L. [excluded] | DIAR13 |
| n/a | Dianthus sternbergii Sieber ex Capelli | DIST9 |
| n/a | Drymaria gracilis Cham. & Schlecht. [excluded] | DRGR6 |
| n/a | Eremogone Fenzl | EREMO11 |
| n/a | Eremogone gypsophiloides (L.) Fenzl | ERGY2 |
| n/a | Gypsophila perfoliata L. var. latifolia Maxim. [excluded] | GYPEL2 |
| n/a | Gypsophila stevenii Fisch. ex Schrank [excluded] | GYST3 |
| n/a | Lychnis alpina L. var. alpina L. [excluded] | LYALA7 |
| n/a | Lychnis alpina L. [excluded] | LYAL6 |
| n/a | Minuartia graminifolia (Ard.) Jav. | MIGR15 |
| n/a | Minuartia laricifolia (L.) Schinz & Thell. | MILA14 |
| n/a | Minuartia verna (L.) Hiern [excluded] | MIVE7 |
| n/a | Pollichia campestris Aiton | POCA51 |
| n/a | Pollichia Medik. | POLLI |
| n/a | Sagina ?normaniana Lagerh. | SANO3 |
| n/a | Silene ?hampeana Meusel & K. Werner [dioica ? latifolia] | SIHA9 |
| n/a | Silene apetala Willd. [excluded] | SIAP4 |
| n/a | Silene atropurpurea (Griseb.) Greuter & Burdet | SIAT5 |
| n/a | Silene flos-jovis (L.) Greuter & Burdet | SIFL6 |
| n/a | Silene inaperta L. | SIIN20 |
| n/a | Silene rupestris L. | SIRU6 |
| n/a | Silene secundiflora Otth | SISE9 |
| n/a | Silene serpentinicola T.W.Nelson & J.P.Nelson | SISE10 |
| achyronychia | Achyronychia Torr. & Gray | ACHYR3 |
| addersmeat | Stellaria holostea L. | STHO2 |
| Agrostemma brachyloba | Agrostemma gracilis Boiss. | AGGR5 |
| Ahart's nailwort | Paronychia ahartii Ertter | PAAH |
| Alaska starwort | Stellaria alaskana Hult | STAL3 |
| Aleutian chickweed | Cerastium aleuticum Hult | CEAL |
| alpine catchfly | Silene struthioloides Gray | SIST2 |
| alsinidendron | Alsinidendron Mann | ALSIN |
| Alsinidendron lychnoides | Schiedea lychnoides Hbd. | SCLY |
| Alsinidendron obovatum | Alsinidendron obovatum Sherff var. parvifolium O. Deg. & Sherff | ALOBP |
| Alsinidendron viscosum | Schiedea viscosa Mann | SCVI2 |
| Alsinidendron viscosum | Schiedea viscosa Mann var. laevis (Sherff) St. John | SCVIL |
| American chickweed | Stellaria americana (Porter ex B.L. Robins.) Standl. | STAM |
| American nailwort | Paronychia americana (Nutt.) Fenzl ex Walp. | PAAM3 |
| American nailwort | Paronychia americana (Nutt.) Fenzl ex Walp. ssp. americana | PAAMA |
| American nailwort | Paronychia americana (Nutt.) Fenzl ex Walp. ssp. pauciflora (Small) Chaudhri | PAAMP |
| American water starwort | Stellaria fontinalis (Short & Peter) B.L. Robins. | STFO |
| annual pearlwort | Sagina apetala Ard. | SAAP |
| annual sandwort | Minuartia pusilla (S. Wats.) Mattf. | MIPU7 |
| annual sandwort | Minuartia pusilla (S. Wats.) Mattf. var. diffusa (Maguire) McNeill | MIPUD |
| annual sandwort | Minuartia pusilla (S. Wats.) Mattf. var. pusilla | MIPUP |
| apetalous catchfly | Silene uralensis (Rupr.) Bocquet | SIUR |
| apetalous catchfly | Silene uralensis (Rupr.) Bocquet ssp. attenuata (Farr) McNeill | SIURA |
| apetalous catchfly | Silene uralensis (Rupr.) Bocquet ssp. montana (S. Wats.) McNeill | SIURM |
| apetalous catchfly | Silene uralensis (Rupr.) Bocquet ssp. ogilviensis (Porsild) Brunton | SIURO |
| apetalous catchfly | Silene uralensis (Rupr.) Bocquet ssp. uralensis | SIURU |
| apetalous sandwort | Moehringia trinervia (L.) Clairv. | MOTR2 |
| Appalachian stitchwort | Minuartia glabra (Michx.) Mattf. | MIGL5 |
| arctic catchfly | Silene involucrata (Cham. & Schlecht.) Bocquet | SIIN4 |
| arctic catchfly | Silene involucrata (Cham. & Schlecht.) Bocquet ssp. elatior (Regel) Bocquet | SIINE |
| arctic catchfly | Silene involucrata (Cham. & Schlecht.) Bocquet ssp. involucrata | SIINI2 |
| arctic pearlwort | Sagina saginoides (L.) Karst. | SASA |
| arctic stitchwort | Minuartia arctica (Stev. ex Ser.) Graebn. | MIAR3 |
| Arenaria aculeata | Arenaria congesta Nutt. var. aculeata (S. Wats.) M.E. Jones | ARCOA3 |
| Arenaria aculeata | Arenaria fendleri Gray var. aculeata (S. Wats.) Welsh | ARFEA |
| Arenaria aculeata | Arenaria pumicola Coville & Leib. var. californica Maguire | ARPUC |
| Arenaria aculeata | Arenaria salmonensis Henderson | ARSA10 |
| Arenaria aculeata | Eremogone aculeata (S. Wats.) S. Ikonnikov | ERAC6 |
| Arenaria capillaris ssp. americana | Arenaria capillaris Poir. var. americana (Maguire) R.J. Davis | ARCAA2 |
| Arenaria capillaris ssp. americana | Arenaria formosa (Fisch.) Regel | ARFO6 |
| Arenaria capillaris ssp. americana | Eremogone americana (Maguire) S. Ikonnikov | ERAM10 |
| Arenaria capillaris ssp. capillaris | Arenaria capillaris Poir. var. nardifolia (Ledeb.) Regel | ARCAN |
| Arenaria capillaris ssp. capillaris | Arenaria nardifolia Ledeb. | ARNA |
| Arenaria capillaris ssp. capillaris | Eremogone capillaris (Poir.) Fenzl | ERCA22 |
| Arenaria congesta var. congesta | Eremogone congesta (Nutt.) S. Ikonnikov | ERCO24 |
| Arenaria congesta var. congesta | Eremogone congesta (Nutt.) S. Ikonnikov var. congesta (Nutt.) S. Ikonnikov [superfluous autonym] | ERCOC13 |
| Arenaria congesta var. lithophila | Arenaria congesta Nutt. var. expansa Maguire | ARCOE |
| Arenaria congesta var. lithophila | Arenaria lithophila Rydb. | ARLI7 |
| Arenaria congesta var. lithophila | Eremogone congesta (Nutt.) S. Ikonnikov var. lithophila (Rydb.) Dorn | ERCOL5 |
| Arenaria congesta var. subcongesta | Arenaria burkei T.J. Howell | ARBU4 |
| Arenaria congesta var. subcongesta | Arenaria fendleri Gray var. subcongesta S. Wats. | ARFES3 |
| Arenaria congesta var. subcongesta | Arenaria subcongesta (S. Wats.) Rydb. | ARSU8 |
| Arenaria eastwoodiae var. eastwoodiae | Arenaria fendleri Gray var. eastwoodiae (Rydb.) Harrington | ARFEE |
| Arenaria eastwoodiae var. eastwoodiae | Eremogone eastwoodiae (Rydb.) S. Ikonnikov | EREA3 |
| Arenaria fendleri var. fendleri | Arenaria fendleri Gray var. diffusa Porter | ARFED |
| Arenaria fendleri var. fendleri | Eremogone fendleri (Gray) S. Ikonnikov | ERFE3 |
| Arenaria hookeri ssp. desertorum | Arenaria hookeri Nutt. var. desertorum Maguire | ARHOD2 |
| Arenaria hookeri ssp. desertorum | Eremogone hookeri (Nutt.) W.A. Weber ssp. desertorum (Maguire) W.A. Weber | ERHOD |
| Arenaria hookeri ssp. hookeri | Arenaria hookeri Nutt. var. hookeri | ARHOH5 |
| Arenaria hookeri ssp. hookeri | Eremogone hookeri (Nutt.) W.A. Weber | ERHO13 |
| Arenaria hookeri ssp. hookeri | Eremogone hookeri (Nutt.) W.A. Weber var. hookeri (Nutt.) W.A. Weber [superfluous autonym] | ERHOH2 |
| Arenaria hookeri ssp. pinetorum | Arenaria hookeri Nutt. var. pinetorum (A. Nels.) Maguire | ARHOP4 |
| Arenaria hookeri ssp. pinetorum | Eremogone hookeri (Nutt.) W.A. Weber ssp. pinetorum (A. Nels.) W.A. Weber | ERHOP |
| Arenaria hookeri ssp. pinetorum | Eremogone hookeri (Nutt.) W.A. Weber var. pinetorum (A. Nels.) Dorn | ERHOP2 |
| Arenaria kingii ssp. compacta | Arenaria compacta Coville | ARCO16 |
| Arenaria kingii ssp. compacta | Arenaria fendleri Gray var. glabrescens S. Wats. | ARFEG |
| Arenaria kingii ssp. compacta | Arenaria kingii (S. Wats.) M.E. Jones var. glabrescens (S. Wats.) Maguire | ARKIG |
| Arenaria kingii ssp. compacta | Eremogone kingii (S. Wats.) S. Ikonnikov var. glabrescens (S. Wats.) Dorn | ERKIG |
| Arenaria kingii ssp. kingii | Arenaria congesta Nutt. var. kingii (S. Wats.) B.L. Robins. | ARCOK |
| Arenaria kingii ssp. kingii | Eremogone kingii (S. Wats.) S. Ikonnikov | ERKI2 |
| Arenaria kingii ssp. plateauensis | Arenaria kingii (S. Wats.) M.E. Jones var. plateauensis (Maguire) Reveal | ARKIP2 |
| Arenaria kingii ssp. uintahensis | Arenaria aculeata S. Wats. var. uintahensis (A. Nels.) M.E. Peck | ARACU |
| Arenaria kingii ssp. uintahensis | Arenaria kingii (S. Wats.) M.E. Jones var. uintahensis (A. Nels.) C.L. Hitchc. | ARKIU3 |
| Arenaria kingii ssp. uintahensis | Arenaria uintahensis A. Nels. | ARUI2 |
| Arenaria kingii ssp. uintahensis | Eremogone kingii (S. Wats.) S. Ikonnikov ssp. uintahensis (A. Nels.) W.A. Weber | ERKIU |
| Arenaria lanuginosa ssp. lanuginosa var. lanuginosa | Spergulastrum lanuginosum Michx. | SPLA8 |
| Arenaria lanuginosa ssp. lanuginosa var. lanuginosa | Stellaria lagunensis M.E. Jones | STLA14 |
| Arenaria lanuginosa ssp. saxosa | Arenaria confusa Rydb. | ARCO14 |
| Arenaria lanuginosa ssp. saxosa | Arenaria lanuginosa (Michx.) Rohrb. var. cinerascens (B.L. Robins.) Shinners | ARLAC |
| Arenaria lanuginosa ssp. saxosa | Arenaria saxosa Gray | ARSA11 |
| Arenaria lanuginosa ssp. saxosa | Arenaria saxosa Gray var. cinerascens B.L. Robins. | ARSAC |
| Arenaria lanuginosa ssp. saxosa | Arenaria saxosa Gray var. mearnsii (Woot. & Standl.) Kearney & Peebles | ARSAM2 |
| Arenaria lanuginosa ssp. saxosa | Spergulastrum lanuginosum Michx. ssp. saxosum (Gray) W.A. Weber | SPLAS2 |
| Arenaria macradenia ssp. macradenia var. macradenia | Arenaria congesta Nutt. var. macradenia (S. Wats.) M.E. Jones | ARCOM |
| Arenaria macradenia ssp. macradenia var. macradenia | Arenaria congesta Nutt. var. parishiorum (B.L. Robins.) B.L. Robins. | ARCOP3 |
| Arenaria macradenia ssp. macradenia var. macradenia | Arenaria macradenia S. Wats. var. parishiorum B.L. Robins. | ARMAP |
| Arenaria macradenia ssp. macradenia var. macradenia | Eremogone macradenia (S. Wats.) S. Ikonnikov | ERMA13 |
| Arenaria macradenia ssp. macradenia var. macradenia | Eremogone parishiorum (B.L. Robins.) S. Ikonnikov | ERPA21 |
| Arenaria procera ssp. procera | Arenaria stenophylla Ledeb. | ARST13 |
| Arenaria pumicola | Eremogone pumicola (Coville & Leib.) S. Ikonnikov | ERPU17 |
| Arenaria serpyllifolia | Arenaria leptoclados (Reichenb.) Guss. | ARLE3 |
| Arenaria serpyllifolia | Arenaria serpyllifolia L. ssp. leptoclados (Reichenb.) Nyman | ARSEL |
| Arenaria serpyllifolia | Arenaria serpyllifolia L. ssp. serpyllifolia L. [superfluous autonym] | ARSES2 |
| Arenaria serpyllifolia | Arenaria serpyllifolia L. var. tenuior Mert. & Koch | ARSET |
| Arenaria stenomeres | Eremogone stenomeres (Eastw.) S. Ikonnikov | ERST8 |
| Arenaria ursina | Eremogone ursina (B.L. Robins.) S. Ikonnikov | ERUR5 |
| Arrost's baby's-breath | Gypsophila arrostii Guss. | GYAR2 |
| Auwahi schiedea | Schiedea implexa (Hbd.) Sherff | SCIM |
| awl-leaf pearlwort | Sagina subulata (Sw.) K. Presl | SASU5 |
| baby's breath | Gypsophila paniculata L. | GYPA |
| baby's-breath | Gypsophila L. | GYPSO |
| Baldwin's nailwort | Paronychia baldwinii (Torr. & Gray) Fenzl ex Walp. | PABA3 |
| Baldwin's nailwort | Paronychia baldwinii (Torr. & Gray) Fenzl ex Walp. ssp. baldwinii | PABAB |
| Baldwin's nailwort | Paronychia baldwinii (Torr. & Gray) Fenzl ex Walp. ssp. riparia (Chapman) Chaudhri | PABAR |
| Balkan catchfly | Silene csereii Baumg. | SICS |
| ballhead sandwort | Arenaria congesta Nutt. | ARCO5 |
| ballhead sandwort | Arenaria congesta Nutt. var. congesta | ARCOC4 |
| ballhead sandwort | Arenaria congesta Nutt. var. crassula Maguire | ARCOC3 |
| ballhead sandwort | Arenaria congesta Nutt. var. prolifera Maguire | ARCOP |
| ballhead sandwort | Arenaria congesta Nutt. var. simulans Maguire | ARCOS |
| beach starwort | Stellaria littoralis Torr. | STLI |
| Bear Valley sandwort | Arenaria ursina B.L. Robins. | ARUR |
| beautiful sandwort | Minuartia rubella (Wahlenb.) Hiern. | MIRU3 |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. | CEBE2 |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. ssp. beeringianum | CEBEB2 |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. ssp. beeringianum var. beeringianum | CEBEB4 |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. ssp. beeringianum var. grandiflorum (Fenzl) Hult | CEBEG3 |
| Bering chickweed | Cerastium beeringianum Cham. & Schlecht. ssp. earlei (Rydb.) Hult | CEBEE |
| big chickweed | Cerastium fontanum Baumg. ssp. vulgare (Hartman) Greuter & Burdet | CEFOV2 |
| birdeye pearlwort | Sagina procumbens L. | SAPR |
| blackseed sandspurry | Spergularia atrosperma R.P. Rossb. | SPAT |
| bladder campion | Silene latifolia Poir. | SILA21 |
| bladder campion | Silene latifolia Poir. ssp. alba (P. Mill.) Greuter & Burdet | SILAA3 |
| Blue Mountain catchfly | Silene scaposa B.L. Robins. | SISC |
| Blue Mountain catchfly | Silene scaposa B.L. Robins. var. scaposa | SISCS |
| Blue Ridge catchfly | Silene ovata Pursh | SIOV |
| bluntleaf sandwort | Moehringia lateriflora (L.) Fenzl | MOLA6 |
| Boccone's sandspurry | Spergularia bocconii (Scheele) Foucaud ex Merino | SPBO |
| bog chickweed | Stellaria alsine Grimm | STAL4 |
| bog stitchwort | Minuartia stricta (Sw.) Hiern. | MIST5 |
| Bolander's silene | Silene hookeri Nutt. ssp. bolanderi (Gray) Abrams | SIHOB |
| boreal carnation | Dianthus repens Willd. | DIRE |
| boreal catchfly | Silene soczaviana (Schischkin) Bocquet | SISO2 |
| Boreal chickweed | Cerastium biebersteinii DC. | CEBI3 |
| boreal starwort | Stellaria borealis Bigelow | STBO3 |
| boreal starwort | Stellaria borealis Bigelow ssp. borealis | STBOB |
| bouncingbet | Saponaria officinalis L. | SAOF4 |
| Bridges's catchfly | Silene bridgesii Rohrb. | SIBR |
| brilliant campion | Lychnis fulgens Fisch. ex Sims | LYFU2 |
| bristle nailwort | Paronychia setacea Torr. & Gray | PASE2 |
| bristle nailwort | Paronychia setacea Torr. & Gray var. longibracteata Chaudhri | PASEL2 |
| bristle nailwort | Paronychia setacea Torr. & Gray var. setacea | PASES3 |
| bristleseed sandspurry | Spergularia echinosperma (Celak.) Aschers. & Graebn. | SPEC |
| brittle sandwort | Minuartia nuttallii (Pax) Briq. ssp. fragilis (Maguire & A. Holmgren) McNeill | MINUF |
| brittle sandwort | Minuartia nuttallii (Pax) Briq. ssp. gracilis (B.L. Robins.) McNeill | MINUG |
| brittle sandwort | Minuartia nuttallii (Pax) Briq. ssp. gregaria (Heller) McNeill | MINUG2 |
| California manyseed | Polycarpon depressum Nutt. | PODE |
| California sandwort | Minuartia californica (Gray) Mattf. | MICA7 |
| campion | Lychnis L. | LYCHN |
| Canadian sandspurry | Spergularia canadensis (Pers.) G. Don | SPCA3 |
| Canadian sandspurry | Spergularia canadensis (Pers.) G. Don var. canadensis | SPCAC |
| canyon drymary | Drymaria leptophylla (Cham. & Schlecht.) Fenzl ex Rohrb. | DRLE3 |
| canyon schiedea | Schiedea spergulina Gray | SCSP |
| canyon schiedea | Schiedea spergulina Gray var. leiopoda Sherff | SCSPL |
| canyon schiedea | Schiedea spergulina Gray var. spergulina | SCSPS |
| cardinal catchfly | Silene laciniata Cav. | SILA2 |
| cardinal catchfly | Silene laciniata Cav. ssp. greggii (Gray) C.L. Hitchc. & Maguire | SILAG2 |
| cardinal catchfly | Silene laciniata Cav. ssp. major C.L. Hitchc. & Maguire | SILAM |
| cardinal catchfly | Silene laciniata Cav. ssp. major C.L. Hitchc. & Maguire var. angustifolia C.L. Hitchc. & Maguire | SILAA |
| cardinal catchfly | Silene laciniata Cav. ssp. major C.L. Hitchc. & Maguire var. latifolia C.L. Hitchc. & Maguire | SILAL |
| cardionema | Cardionema DC. | CARDI |
| Cardionema ramosissimum | Loeflingia ramosissima Weinm. | LORA2 |
| carnation | Dianthus caryophyllus L. | DICA26 |
| carnivorous silene | Silene nuda (S. Wats.) C.L. Hitchc. & Maguire ssp. insectivora (Henderson) C.L. Hitchc. & Maguire | SINUI2 |
| catchfly | Silene L. | SILEN |
| Cerastium aleuticum | Cerastium beeringianum Cham. & Schlecht. var. aleuticum (Hult?n) Welsh | CEBEA |
| Cerastium arvense ssp. fuegianum | Cerastium arvense L. var. fuegianum Hook. f. | CEARF2 |
| Cerastium arvense ssp. fuegianum | Cerastium fuegianum (Hook. f.) A. Nels. | CEFU |
| Cerastium arvense ssp. fuegianum | Cerastium thermale Rydb. | CETH5 |
| Cerastium arvense ssp. maximum | Cerastium arvense L. var. maximum Hollick & Britt. | CEARM2 |
| Cerastium arvense ssp. maximum | Cerastium viride Heller | CEVI5 |
| Cerastium arvense ssp. strictum | Cerastium alsophilum Greene | CEAL6 |
| Cerastium arvense ssp. strictum | Cerastium angustatum Greene | CEAN |
| Cerastium arvense ssp. strictum | Cerastium arvense L. var. angustifolium Fenzl | CEARA3 |
| Cerastium arvense ssp. strictum | Cerastium arvense L. var. latifolium Fenzl | CEARL |
| Cerastium arvense ssp. strictum | Cerastium arvense L. var. purpurascens Boivin | CEARP2 |
| Cerastium arvense ssp. strictum | Cerastium arvense L. var. viscidulum Gremli | CEARV5 |
| Cerastium arvense ssp. strictum | Cerastium campestre Greene | CECA8 |
| Cerastium arvense ssp. strictum | Cerastium confertum Greene | CECO5 |
| Cerastium arvense ssp. strictum | Cerastium effusum Greene | CEEF |
| Cerastium arvense ssp. strictum | Cerastium elongatum Pursh | CEEL |
| Cerastium arvense ssp. strictum | Cerastium graminifolium Rydb. | CEGR9 |
| Cerastium arvense ssp. strictum | Cerastium latifolium Fenzl | CELA3 |
| Cerastium arvense ssp. strictum | Cerastium nitidum Greene | CENI4 |
| Cerastium arvense ssp. strictum | Cerastium occidentale Greene | CEOC4 |
| Cerastium arvense ssp. strictum | Cerastium oreophilum Greene | CEOR5 |
| Cerastium arvense ssp. strictum | Cerastium patulum Greene | CEPA15 |
| Cerastium arvense ssp. strictum | Cerastium scopulorum Greene | CESC4 |
| Cerastium arvense ssp. strictum | Cerastium sonnei Greene | CESO5 |
| Cerastium arvense ssp. strictum | Cerastium strictum L. | CEST3 |
| Cerastium arvense ssp. strictum | Cerastium subulatum Greene | CESU4 |
| Cerastium arvense ssp. strictum | Cerastium tenuifolium Pursh | CETE6 |
| Cerastium arvense ssp. strictum | Cerastium vestitum Greene | CEVE7 |
| Cerastium arvense ssp. velutinum var. velutinum | Cerastium arvense L. var. bracteatum (Raf.) MacM. | CEARB |
| Cerastium arvense ssp. velutinum var. velutinum | Cerastium arvense L. var. oblongifolium (Torr.) Hollick & Britt. | CEARO |
| Cerastium arvense ssp. velutinum var. velutinum | Cerastium arvense L. var. webbii Jennings | CEARW |
| Cerastium arvense ssp. velutinum var. velutinum | Cerastium bracteatum Raf. | CEBR5 |
| Cerastium arvense ssp. velutinum var. velutinum | Cerastium oblongifolium Torr. | CEOB2 |
| Cerastium arvense ssp. velutinum var. velutinum | Cerastium velutinum Raf. | CEVE8 |
| Cerastium arvense ssp. velutinum var. villosum | Cerastium arvense L. var. villosissimum Pennell | CEARV6 |
| Cerastium arvense ssp. velutinum var. villosum | Cerastium villosum Muhl. ex Darl. | CEVI6 |
| Cerastium beeringianum ssp. beeringianum var. beeringianum | Cerastium pilosum Greene, non Ledeb. | CEPI2 |
| Cerastium beeringianum ssp. beeringianum var. beeringianum | Cerastium pulchellum Rydb. | CEPU9 |
| Cerastium beeringianum ssp. beeringianum var. grandiflorum | Cerastium scammaniae Polunin | CESC5 |
| Cerastium beeringianum ssp. earlei | Cerastium alpinum L. var. capillare (Fern. & Wieg.) Boivin | CEALC |
| Cerastium beeringianum ssp. earlei | Cerastium beeringianum Cham. & Schlecht. var. capillare Fern. & Wieg. | CEBEC |
| Cerastium beeringianum ssp. earlei | Cerastium earlei Rydb. | CEEA |
| Cerastium brachypetalum | Cerastium brachypetalum Desportes ex Pers. ssp. brachypetalum Desportes ex Pers. [superfluous autonym] | CEBRB |
| Cerastium brachypetalum | Cerastium brachypetalum Desportes ex Pers. ssp. tauricum (Spreng.) Murb. | CEBRT |
| Cerastium brachypodum | Cerastium brachypodum (Engelm. ex Gray) B.L. Robins. var. compactum B.L. Robins. | CEBRC |
| Cerastium brachypodum | Cerastium nutans Raf. var. brachypodum Engelm. ex Gray | CENUB2 |
| Cerastium dichotomum | Cerastium siculum auct. non Guss. [misapplied] | CESI2 |
| Cerastium diffusum | Cerastium tetrandrum W. Curtis | CETE4 |
| Cerastium dubium | Dichodon viscidum (Bieb.) Holub | DIVI11 |
| Cerastium fontanum ssp. vulgare | Cerastium adsurgens Greene | CEAD |
| Cerastium fontanum ssp. vulgare | Cerastium fontanum Baumg. ssp. holosteoides auct. non (Fries) Salman, van Ommering & de Voogd [misapplied] | CEFOH |
| Cerastium fontanum ssp. vulgare | Cerastium fontanum Baumg. ssp. triviale (Link) Jalas | CEFOT |
| Cerastium fontanum ssp. vulgare | Cerastium holosteoides auct. non Fries [misapplied] | CEHO |
| Cerastium fontanum ssp. vulgare | Cerastium holosteoides Fries var. vulgare (Hartman) Hyl. | CEHOV |
| Cerastium fontanum ssp. vulgare | Cerastium triviale Link | CETR10 |
| Cerastium fontanum ssp. vulgare | Cerastium vulgatum L. 1762, non 1755 | CEVU |
| Cerastium fontanum ssp. vulgare | Cerastium vulgatum L. var. hirsutum Fries | CEVUH |
| Cerastium fontanum ssp. vulgare | Cerastium vulgatum L. var. holosteoides auct. non (Fries) Wahlenb. [misapplied] | CEVUH2 |
| Cerastium glomeratum | Cerastium acutatum Suksdorf | CEAC2 |
| Cerastium glomeratum | Cerastium glomeratum Thuill. var. apetalum (Dumort.) Fenzl | CEGLA |
| Cerastium glomeratum | Cerastium viscosum auct. non L. [misapplied] | CEVI3 |
| Cerastium gorodkovianum | Cerastium jenisejense Hult | CEJE4 |
| Cerastium maximum | Dichodon maximum (L.) A.& D. L?ve | DIMA8 |
| Cerastium nutans var. nutans | Cerastium longepedunculatum Muhl. ex Britt. | CELO6 |
| Cerastium nutans var. nutans | Cerastium nutans Raf. var. occidentale Boivin | CENUO2 |
| Cerastium nutans var. obtectum | Cerastium sericeum S. Wats. | CESE8 |
| Cerastium pumilum ssp. pallens | Cerastium glutinosum Fries [excluded] | CEGL8 |
| Cerastium regelii | Cerastium regelii Ostenf. ssp. caespitosum (Malmgr.) Tolm. | CEREC |
| Cerastium regelii | Cerastium regelii Ostenf. ssp. regelii Ostenf. [superfluous autonym] | CERER |
| Charleston sandwort | Arenaria congesta Nutt. var. charlestonensis Maguire | ARCOC2 |
| cheddar pink | Dianthus gratianopolitanus Vill. | DIGR7 |
| chickweed baby's-breath | Gypsophila cerastoides D. Don | GYCE |
| Chihuahuan chickweed | Cerastium sordidum B.L. Robins. | CESO4 |
| childing pink | Petrorhagia prolifera (L.) P.W. Ball & Heywood | PEPR4 |
| circumpolar starwort | Stellaria ruscifolia Pallas ex Schlecht. | STRU |
| circumpolar starwort | Stellaria ruscifolia Pallas ex Schlecht. ssp. aleutica Hult | STRUA |
| circumpolar starwort | Stellaria ruscifolia Pallas ex Schlecht. ssp. ruscifolia | STRUR |
| cismontane minuartia | Minuartia cismontana R.J. Meinke & P.F. Zika | MICI3 |
| clammy campion | Lychnis viscaria L. | LYVI2 |
| cliff schiedea | Schiedea sarmentosa O. Deg. & Sherff | SCSA4 |
| cliffface catchfly | Silene perlmanii W.L. Wagner, Herbst & Sohmer | SIPE5 |
| climbing alsinidendron | Alsinidendron viscosum (Mann) Sherff | ALVI6 |
| Clokey's catchfly | Silene clokeyi C.L. Hitchc. & Maguire | SICL |
| clusterhead | Dianthus carthusianorum L. | DICA19 |
| coastal plain nailwort | Paronychia herniarioides (Michx.) Nutt. | PAHE6 |
| Colorado starwort | Stellaria irrigua Bunge | STIR |
| Columbian stitchwort | Minuartia austromontana S.J. Wolf & Packer | MIAU3 |
| common catchfly | Silene gallica L. | SIGA |
| common chickweed | Stellaria media (L.) Vill. | STME2 |
| common chickweed | Stellaria media (L.) Vill. ssp. media | STMEM |
| common chickweed | Stellaria media (L.) Vill. ssp. neglecta (Weihe) Murb. | STMEN |
| common chickweed | Stellaria media (L.) Vill. ssp. pallida (Dumort.) Aschers. & Graebn. | STMEP |
| common corncockle | Agrostemma githago L. | AGGI |
| common mouse-ear chickweed | Cerastium fontanum Baumg. | CEFO2 |
| coral necklace | Illecebrum L. | ILLEC |
| coral necklace | Illecebrum verticillatum L. | ILVE3 |
| corn spurry | Spergula arvensis L. | SPAR |
| corncockle | Agrostemma L. | AGROS |
| corrigiola | Corrigiola L. | CORRI |
| cow soapwort | Vaccaria hispanica (P. Mill.) Rauschert | VAHI2 |
| Crater Lake sandwort | Arenaria pumicola Coville & Leib. | ARPU6 |
| creeping baby's-breath | Gypsophila repens L. | GYRE |
| creeping nailwort | Paronychia sessiliflora Nutt. | PASE |
| Cumberland stitchwort | Minuartia cumberlandensis (B.E. Wofford & Kral) McNeill | MICU3 |
| curled starwort | Stellaria crispa Cham. & Schlecht. | STCR2 |
| Deptford pink | Dianthus armeria L. | DIAR |
| Devils Slide schiedea | Schiedea verticillata F. Br. | SCVE3 |
| Diamond Head schiedea | Schiedea adamantis St. John | SCAD |
| diandra sandspurry | Spergularia diandra (Guss.) Held. & Sart. | SPDI |
| Dianthus armeria | Dianthus armeria L. ssp. armeria L. [superfluous autonym] | DIARA2 |
| Dianthus barbatus | Dianthus barbatus L. ssp. barbatus L. [superfluous autonym] | DIBAB2 |
| Dianthus carthusianorum | Dianthus atrorubens All. | DIAT |
| Dianthus deltoides | Dianthus deltoides L. ssp. deltoides L. [superfluous autonym] | DIDED |
| Dianthus plumarius | Dianthus plumarius L. var. semperflorens hort. | DIPLS2 |
| dichotoma silene | Silene dichotoma Ehrh. | SIDI2 |
| Dixie stitchwort | Minuartia muscorum (Fassett) Rabeler | MIMU6 |
| doubtful chickweed | Cerastium dubium (Bast.) Gu?pin | CEDU2 |
| Douglas's stitchwort | Minuartia douglasii (Fenzl ex Torr. & Gray) Mattf. | MIDO3 |
| Drummond's campion | Silene drummondii Hook. | SIDR |
| Drummond's campion | Silene drummondii Hook. var. drummondii | SIDRD |
| Drummond's campion | Silene drummondii Hook. var. striata (Rydb.) Bocquet | SIDRS |
| Drummond's nailwort | Paronychia drummondii Torr. & Gray | PADR |
| Drummond's stitchwort | Minuartia drummondii (Shinners) McNeill | MIDR |
| Drymaria cordata ssp. cordata | Drymaria cordata (L.) Willd. ex J.A. Schultes var. pacifica Mizush. | DRCOP |
| Drymaria cordata ssp. diandra | Drymaria diandra Blume | DRDI5 |
| Drymaria effusa var. depressa | Drymaria depressa Greene | DRDE6 |
| Drymaria glandulosa | Drymaria fendleri S. Wats. | DRFE3 |
| Drymaria leptophylla | Drymaria tenella Gray | DRTE2 |
| Drymaria molluginea | Drymaria sperguloides Gray | DRSP7 |
| drymary | Drymaria Willd. ex J.A. Schultes | DRYMA |
| eastern fringed catchfly | Silene polypetala (Walt.) Fern. & Schub. | SIPO |
| Eastwood's sandwort | Arenaria eastwoodiae Rydb. | AREA |
| Eastwood's sandwort | Arenaria eastwoodiae Rydb. var. adenophora Kearney & Peebles | AREAA |
| Eastwood's sandwort | Arenaria eastwoodiae Rydb. var. eastwoodiae | AREAE |
| Edwards's starwort | Stellaria ciliatosepala Trautv. | STCI4 |
| elegant stitchwort | Minuartia elegans (Cham. & Schlecht.) Schischkin | MIEL2 |
| Eremogone gypsophiloides | Arenaria gypsophiloides L. | ARGY3 |
| Eurasian catchfly | Silene nutans L. | SINU2 |
| Eurasian nailwort | Paronychia echinulata Chater | PAEC2 |
| European chickweed | Cerastium pumilum W. Curtis | CEPU4 |
| evening campion | Silene nivea (Nutt.) Muhl. ex Otth | SINI |
| false jagged-ckickweed | Lepyrodiclis Fenzl | LEPYR |
| false jagged-ckickweed | Lepyrodiclis holosteoides (C.A. Mey.) Fenzl ex Fisch. & C.A. Mey. | LEHO7 |
| feathered pink | Dianthus plumarius L. | DIPL |
| Fendler's drymary | Drymaria glandulosa K. Presl | DRGL5 |
| Fendler's sandwort | Arenaria fendleri Gray | ARFE3 |
| Fendler's sandwort | Arenaria fendleri Gray var. brevifolia (Maguire) Maguire | ARFEB |
| Fendler's sandwort | Arenaria fendleri Gray var. fendleri | ARFEF3 |
| Ferris's sandwort | Arenaria macradenia S. Wats. ssp. ferrisiae Abrams | ARMAF |
| fescue sandwort | Arenaria capillaris Poir. ssp. americana Maguire | ARCAA |
| field chickweed | Cerastium arvense L. | CEAR4 |
| field chickweed | Cerastium arvense L. ssp. arvense | CEARA2 |
| field chickweed | Cerastium arvense L. ssp. fuegianum (Hook. f.) Ugborogho | CEARF |
| field chickweed | Cerastium arvense L. ssp. maximum (Hollick & Britt.) Ugborogho | CEARM |
| field chickweed | Cerastium arvense L. ssp. strictum (L.) Ugborogho | CEARS2 |
| field chickweed | Cerastium arvense L. ssp. velutinum (Raf.) Ugborogho | CEARV2 |
| field chickweed | Cerastium arvense L. ssp. velutinum (Raf.) Ugborogho var. velutinum (Raf.) Britt. | CEARV3 |
| field chickweed | Cerastium arvense L. ssp. velutinum (Raf.) Ugborogho var. villosum (Muhl. ex Darl.) Hollick & Britt. | CEARV4 |
| fire pink | Silene virginica L. | SIVI4 |
| fire pink | Silene virginica L. var. robusta Strausbaugh & Core | SIVIR |
| fire pink | Silene virginica L. var. virginica | SIVIV |
| Fischer's chickweed | Cerastium fischerianum Ser. | CEFI |
| fivestamen chickweed | Cerastium semidecandrum L. | CESE4 |
| fleshy starwort | Stellaria crassifolia Ehrh. | STCR |
| fleshy starwort | Stellaria crassifolia Ehrh. var. crassifolia | STCRC |
| fleshy starwort | Stellaria crassifolia Ehrh. var. eriocalycina Schischkin | STCRE |
| fleshy starwort | Stellaria crassifolia Ehrh. var. linearis Fenzl | STCRL |
| Forest Camp sandwort | Arenaria macradenia S. Wats. ssp. macradenia var. kuschei (Eastw.) Maguire | ARMAK2 |
| forked chickweed | Cerastium dichotomum L. | CEDI5 |
| forked nailwort | Paronychia lindheimeri Engelm. ex Gray | PALI5 |
| forked nailwort | Paronychia lindheimeri Engelm. ex Gray var. lindheimeri | PALIL2 |
| forked nailwort | Paronychia lindheimeri Engelm. ex Gray var. longibracteata Chaudhri | PALIL |
| fourleaf manyseed | Polycarpon tetraphyllum (L.) L. | POTE |
| fourleaf manyseed | Polycarpon tetraphyllum (L.) L. ssp. alsinifolium (Biv.) P.W. Ball | POTEA |
| fourleaf manyseed | Polycarpon tetraphyllum (L.) L. ssp. tetraphyllum | POTET2 |
| fourstamen chickweed | Cerastium diffusum Pers. | CEDI7 |
| fragrant pink | Dianthus fragrans M.F. Adams [excluded] | DIFR5 |
| Franklin's sandwort | Arenaria franklinii Dougl. ex Hook. | ARFR |
| Franklin's sandwort | Arenaria franklinii Dougl. ex Hook. var. franklinii | ARFRF2 |
| fringed pink | Dianthus superbus L. | DISU12 |
| garden baby's-breath | Gypsophila scorzonerifolia Ser. | GYSC |
| geocarpon | Geocarpon Mackenzie | GEOCA2 |
| German knotgrass | Scleranthus annuus L. | SCAN2 |
| German knotgrass | Scleranthus L. | SCLER |
| giantchickweed | Myosoton aquaticum (L.) Moench | MYAQ |
| gland sandwort | Arenaria congesta Nutt. var. glandulifera Maguire | ARCOG |
| globe schiedea | Schiedea globosa Mann | SCGL2 |
| Godfrey's stitchwort | Minuartia godfreyi (Shinners) McNeill | MIGO |
| Grand Canyon campion | Silene rectiramea B.L. Robins. | SIRE5 |
| grasslike starwort | Stellaria graminea L. | STGR |
| gray chickweed | Cerastium brachypetalum Desportes ex Pers. | CEBR2 |
| gray rupturewort | Herniaria incana Lam. | HEIN4 |
| great chickweed | Cerastium maximum L. | CEMA5 |
| Greene's catchfly | Silene campanulata S. Wats. ssp. greenei (S. Wats.) C.L. Hitchc. & Maguire | SICAG2 |
| Greenland stitchwort | Minuartia groenlandica (Retz.) Ostenf. | MIGR7 |
| Gypsophila elegans | Gypsophila elegans M. Bieb. var. elegans M. Bieb. [superfluous autonym] | GYELE |
| Gypsophila muralis | Psammophiliella muralis (L.) S. Ikonnikov | PSMU |
| Gypsophila paniculata | Gypsophila paniculata L. var. paniculata L. [superfluous autonym] | GYPAP |
| Gypsophila perfoliata var. latifolia | Gypsophila pacifica Komarov [excluded] | GYPA6 |
| Gypsophila pilosa | Gypsophila porrigens (L.) Boiss. | GYPO |
| Gypsophila pilosa | Pseudosaponaria pilosa (Huds.) S. Ikonnikov | PSPI2 |
| Gypsophila pilosa | Saponaria porrigens L. | SAPO8 |
| Gypsophila repens | Gypsophila repens L. var. rosea hort. | GYRER2 |
| hairy forked nailwort | Paronychia fastigiata (Raf.) Fern. | PAFA3 |
| hairy forked nailwort | Paronychia fastigiata (Raf.) Fern. var. fastigiata | PAFAF |
| hairy forked nailwort | Paronychia fastigiata (Raf.) Fern. var. nuttallii (Small) Fern. | PAFAN |
| hairy forked nailwort | Paronychia fastigiata (Raf.) Fern. var. paleacea Fern. | PAFAP |
| hairy rupturewort | Herniaria hirsuta L. | HEHI7 |
| hairy rupturewort | Herniaria hirsuta L. ssp. cinerea (DC.) Coutinho | HEHIC |
| hairy rupturewort | Herniaria hirsuta L. ssp. hirsuta | HEHIH |
| hairy sandspurry | Spergularia villosa (Pers.) Camb. | SPVI |
| hairy schiedea | Schiedea pentamera W.L. Wagner & E. Harris | SCPE14 |
| hairy schiedea | Schiedea pubescens Hbd. | SCPU5 |
| hairy schiedea | Schiedea pubescens Hbd. var. pubescens | SCPUP2 |
| hairypink | Petrorhagia dubia (Raf.) G. L?pez & Romo | PEDU2 |
| Haleakala catchfly | Silene cryptopetala Hbd. | SICR |
| Haleakala schiedea | Schiedea haleakalensis O. Deg. & Sherff | SCHA4 |
| Hawai'i catchfly | Silene hawaiiensis Sherff | SIHA5 |
| Herniaria hirsuta ssp. cinerea | Herniaria cinerea DC. | HECI2 |
| hilly sandwort | Arenaria benthamii Fenzl ex Torr. & Gray | ARBE |
| holosteum | Holosteum L. | HOLOS |
| Holosteum umbellatum | Holosteum umbellatum L. ssp. umbellatum L. [superfluous autonym] | HOUMU |
| honckenya | Honckenya Ehrh. | HONCK |
| Honckenya peploides ssp. diffusa | Arenaria diffusa (Hornem.) Wormsk. | ARDI11 |
| Honckenya peploides ssp. diffusa | Arenaria peploides L. p.p. | ARPE13 |
| Honckenya peploides ssp. diffusa | Arenaria peploides L. var. diffusa Hornem. | ARPED |
| Honckenya peploides ssp. diffusa | Honckenya diffusa (Hornem.) A.& D. L?ve | HODI4 |
| Honckenya peploides ssp. major | Arenaria peploides L. var. major Hook. | ARPEM |
| Honckenya peploides ssp. major | Arenaria peploides L. var. maxima Fern. | ARPEM2 |
| Honckenya peploides ssp. major | Honckenya oblongifolia Torr. & Gray | HOOB3 |
| Honckenya peploides ssp. major | Honckenya peploides (L.) Ehrh. var. major (Hook.) Abrams | HOPEM4 |
| Honckenya peploides ssp. robusta | Arenaria peploides L. var. robusta Fern. | ARPER2 |
| Honckenya peploides ssp. robusta | Honckenya peploides (L.) Ehrh. var. robusta (Fern.) House | HOPER4 |
| Hooker's desert sandwort | Arenaria hookeri Nutt. ssp. desertorum (Maguire) W.A. Weber | ARHOD |
| Hooker's sandwort | Arenaria hookeri Nutt. | ARHO4 |
| Hooker's sandwort | Arenaria hookeri Nutt. ssp. hookeri | ARHOH3 |
| Hooker's sandwort | Arenaria hookeri Nutt. ssp. pinetorum (A. Nels.) W.A. Weber | ARHOP |
| Hooker's silene | Silene hookeri Nutt. | SIHO |
| Hooker's silene | Silene hookeri Nutt. ssp. hookeri | SIHOH |
| Hooker's silene | Silene hookeri Nutt. ssp. pulverulenta (M.E. Peck) C.L. Hitchc. & Maguire | SIHOP |
| House's stitchwort | Minuartia macrantha (Rydb.) House | MIMA3 |
| Howell's stitchwort | Minuartia howellii (S. Wats.) Mattf. | MIHO |
| Indian pink | Silene californica Dur. | SICA4 |
| island schiedea | Schiedea hawaiiensis Hbd. | SCHA5 |
| Italian catchfly | Silene italica (L.) Pers. | SIIT |
| Italian catchfly | Silene italica (L.) Pers. ssp. nemoralis (Waldst. & Kit.) Nyman | SIITN |
| Jacobi's schiedea | Schiedea jacobii W.L. Wagner, S.G. Weller & A.C. Medeiros | SCJA2 |
| jagged chickweed | Holosteum umbellatum L. | HOUM |
| James's nailwort | Paronychia jamesii Torr. & Gray | PAJA |
| Japanese pearlwort | Sagina japonica (Sw.) Ohwi | SAJA2 |
| Jones's nailwort | Paronychia jonesii M.C. Johnston | PAJO2 |
| Kaholuamanu schiedea | Schiedea helleri Sherff | SCHE2 |
| Kalalau schiedea | Schiedea attenuata W.L. Wagner, S.G. Weller & A.K. Sakai | SCAT7 |
| Kamalo Gulch catchfly | Silene alexandri Hbd. | SIAL4 |
| Kamalo Gulch schiedea | Schiedea lydgatei Hbd. | SCLY2 |
| Kauai catchfly | Silene lanceolata Gray | SILA7 |
| Kauai schiedea | Schiedea apokremnos St. John | SCAP |
| Kauai schiedea | Schiedea kauaiensis St. John | SCKA4 |
| King's campion | Silene kingii (S. Wats.) Bocquet | SIKI |
| King's compact sandwort | Arenaria kingii (S. Wats.) M.E. Jones ssp. compacta (Coville) Maguire | ARKIC |
| King's plateau sandwort | Arenaria kingii (S. Wats.) M.E. Jones ssp. plateauensis Maguire | ARKIP |
| King's rosy sandwort | Arenaria kingii (S. Wats.) M.E. Jones ssp. rosea Maguire | ARKIR |
| King's sandwort | Arenaria kingii (S. Wats.) M.E. Jones | ARKI |
| King's sandwort | Arenaria kingii (S. Wats.) M.E. Jones ssp. kingii | ARKIK |
| knotted pearlwort | Sagina nodosa (L.) Fenzl | SANO |
| knotted pearlwort | Sagina nodosa (L.) Fenzl ssp. borealis Crow | SANOB |
| knotted pearlwort | Sagina nodosa (L.) Fenzl ssp. nodosa | SANON |
| Koolau Gap catchfly | Silene degeneri Sherff | SIDE5 |
| Kruckeberg's campion | Silene drummondii Hook. var. kruckebergii Bocquet | SIDRK |
| kuawawaenohu | Alsinidendron lychnoides (Hbd.) Sherff | ALLY3 |
| La Plata sandspurry | Spergularia platensis (Camb.) Fenzl | SPPL2 |
| largefruit catchfly | Silene macrosperma (Porsild) Hult | SIMA4 |
| largeleaf sandwort | Moehringia macrophylla (Hook.) Fenzl | MOMA3 |
| lassicus stitchwort | Minuartia decumbens T.W. & J.P. Nelson | MIDE8 |
| lau lihilihi | Schiedea stellarioides Mann | SCST3 |
| Lemmon's catchfly | Silene lemmonii S. Wats. | SILE2 |
| Livermore nailwort | Paronychia monticola Cory | PAMO8 |
| Livermore sandwort | Arenaria livermorensis Correll | ARLI3 |
| loeflingia | Loeflingia L. | LOEFL |
| Loeflingia squarrosa | Loeflingia squarrosa Nutt. var. squarrosa Nutt. [superfluous autonym] | LOSQS3 |
| Loeflingia squarrosa ssp. artemisiarum | Loeflingia squarrosa Nutt. var. artemisiarum (Barneby & Twisselmann) Dorn | LOSQA2 |
| Loeflingia squarrosa ssp. squarrosa | Loeflingia pusilla Curran | LOPU2 |
| Loeflingia squarrosa ssp. squarrosa | Loeflingia squarrosa Nutt. var. texana (Hook.) Dorn | LOSQT |
| Loeflingia squarrosa ssp. squarrosa | Loeflingia texana Hook. | LOTE |
| longleaf starwort | Stellaria longifolia Muhl. ex Willd. | STLO |
| longleaf starwort | Stellaria longifolia Muhl. ex Willd. var. atrata J.W. Moore | STLOA2 |
| longleaf starwort | Stellaria longifolia Muhl. ex Willd. var. longifolia | STLOL |
| longpod stitchwort | Minuartia macrocarpa (Pursh) Ostenf. | MIMA4 |
| longstalk starwort | Stellaria longipes Goldie | STLO2 |
| longstem sandwort | Arenaria longipedunculata Hult | ARLO |
| loosehead sandwort | Arenaria congesta Nutt. var. lithophila (Rydb.) Maguire | ARCOL |
| Lost River silene | Silene scaposa B.L. Robins. var. lobata C.L. Hitchc. & Maguire | SISCL |
| Louisiana catchfly | Silene subciliata B.L. Robins. | SISU3 |
| low baby's-breath | Gypsophila muralis L. | GYMU |
| Lundell's nailwort | Paronychia lundelliorum Turner | PALU5 |
| Lychnis coronaria | Agrostemma coronaria L. | AGCO6 |
| Lychnis coronaria | Coronaria coriacea (Moench) Schischkin & Gorschk. | COCO15 |
| Lychnis coronaria | Silene coronaria (L.) Clairville | SICO15 |
| Lychnis flos-cuculi | Coronaria flos-cuculi (L.) A. Braun | COFL10 |
| Lychnis flos-cuculi | Silene flos-cuculi (L.) Greuter & Burdet | SIFL5 |
| Lychnis fulgens | Lychnis cognata Maxim. | LYCO11 |
| Lychnis viscaria | Silene viscaria (L.) Jessen | SIVI8 |
| Lychnis viscaria | Viscaria viscosa (Scop.) Asch. | VIVI9 |
| Lychnis viscaria | Viscaria vulgaris Bernh. | VIVU80 |
| maiden pink | Dianthus deltoides L. | DIDE |
| maidenstears | Silene vulgaris (Moench) Garcke | SIVU |
| maltesecross | Lychnis chalcedonica L. | LYCH3 |
| manynerve catchfly | Silene multinervia S. Wats. | SIMU2 |
| manyseed | Polycarpon L. | POLYC |
| Marble Mountain catchfly | Silene marmorensis Kruckeberg | SIMA5 |
| marsh sandwort | Arenaria paludicola B.L. Robins. | ARPA7 |
| matted starwort | Stellaria dicranoides (Cham. & Schlecht.) Fenzl | STDI4 |
| Maui catchfly | Silene grayi S. Wats. | SIGR3 |
| McCart's nailwort | Paronychia maccartii Correll | PAMA7 |
| meadow starwort | Stellaria palustris (Murr.) Retz. | STPA7 |
| Meadow Valley sandwort | Arenaria stenomeres Eastw. | ARST3 |
| media sandspurry | Spergularia maritima (All.) Chiov. | SPMA10 |
| Menzies's campion | Silene menziesii Hook. | SIME |
| Menzies's campion | Silene menziesii Hook. ssp. dorrii (Kellogg) C.L. Hitchc. & Maguire | SIMED |
| Menzies's campion | Silene menziesii Hook. ssp. menziesii | SIMEM |
| Menzies's campion | Silene menziesii Hook. ssp. menziesii var. menziesii | SIMEM2 |
| Menzies's campion | Silene menziesii Hook. ssp. menziesii var. viscosa (Greene) C.L. Hitchc. & Maguire | SIMEV2 |
| Menzies's campion | Silene menziesii Hook. ssp. williamsii (Britt.) Hult | SIMEW |
| Menzies's schiedea | Schiedea menziesii Hook. | SCME3 |
| merckia | Wilhelmsia physodes (Fisch. ex Ser.) McNeill | WIPH |
| Mexican starwort | Stellaria cuspidata Willd. ex Schlecht. | STCU |
| Michaux's stitchwort | Minuartia michauxii (Fenzl) Farw. | MIMI2 |
| Michaux's stitchwort | Minuartia michauxii (Fenzl) Farw. var. michauxii | MIMIM |
| Minuartia arctica | Arenaria arctica Stev. ex Ser. | ARAR20 |
| Minuartia arctica | Lidia arctica (Stev. ex Ser.) A.& D. L?ve | LIAR7 |
| Minuartia austromontana | Arenaria rossii R. Br. ex Richards. ssp. columbiana auct. non (Raup) Maguire [misapplied] | ARROC |
| Minuartia austromontana | Arenaria rossii R. Br. ex Richards. var. columbiana auct. non Raup [misapplied] | ARROC4 |
| Minuartia biflora | Arenaria sajanensis Willd. ex Schlecht. | ARSA7 |
| Minuartia biflora | Lidia biflora (L.) A.& D. L?ve | LIBI6 |
| Minuartia biflora | Stellaria biflora L. | STBI7 |
| Minuartia californica | Arenaria californica (Gray) Brewer | ARCA29 |
| Minuartia caroliniana | Arenaria caroliniana Walt. | ARCA31 |
| Minuartia caroliniana | Minuopsis caroliniana (Walt.) W.A. Weber | MICA15 |
| Minuartia caroliniana | Sabulina caroliniana (Walt.) Small | SACA33 |
| Minuartia cumberlandensis | Arenaria cumberlandensis B.E. Wofford & Kral | ARCU5 |
| Minuartia dawsonensis | Alsinanthe stricta (Sw.) Reichenb. ssp. dawsonensis (Britt.) A.& D. L?ve | ALSTD |
| Minuartia dawsonensis | Arenaria dawsonensis Britt. | ARDA3 |
| Minuartia dawsonensis | Arenaria litorea Fern. | ARLI8 |
| Minuartia dawsonensis | Arenaria stricta Michx. ssp. dawsonensis (Britt.) Maguire | ARSTD |
| Minuartia dawsonensis | Arenaria stricta Michx. var. dawsonensis (Britt.) Scoggan | ARSTD2 |
| Minuartia dawsonensis | Arenaria stricta Michx. var. litorea (Fern.) Britt. | ARSTL |
| Minuartia douglasii | Arenaria douglasii Fenzl ex Torr. & Gray | ARDO5 |
| Minuartia douglasii | Arenaria douglasii Fenzl ex Torr. & Gray var. emarginata H.K. Sharsmith | ARDOE |
| Minuartia douglasii | Arenaria emarginata (H.K. Sharsmith) Hoover | AREM |
| Minuartia douglasii | Minuartia douglasii (Fenzl ex Torr. & Gray) Mattf. var. emarginata (H.K. Sharsmith) McNeill | MIDOE |
| Minuartia drummondii | Arenaria drummondii Shinners | ARDR6 |
| Minuartia drummondii | Stellaria nuttallii Torr. & Gray | STNU |
| Minuartia elegans | Alsinanthe elegans (Cham. & Schlecht.) A.& D. L?ve | ALEL2 |
| Minuartia elegans | Alsine elegans (Cham. & Schlecht.) Fenzl | ALEL3 |
| Minuartia elegans | Arenaria elegans Cham. & Schlecht. | AREL6 |
| Minuartia elegans | Arenaria elegans Cham. & Schlecht. var. columbiana Raup | ARELC |
| Minuartia elegans | Arenaria rossii R. Br. ex Richards. ssp. columbiana (Raup) Maguire | ARROC2 |
| Minuartia elegans | Arenaria rossii R. Br. ex Richards. ssp. elegans (Cham. & Schlecht.) Maguire | ARROE |
| Minuartia elegans | Arenaria rossii R. Br. ex Richards. var. apetala Maguire | ARROA |
| Minuartia elegans | Arenaria rossii R. Br. ex Richards. var. corollina Fenzl | ARROC3 |
| Minuartia elegans | Arenaria rossii R. Br. ex Richards. var. elegans (Cham. & Schlecht.) Welsh | ARROE2 |
| Minuartia elegans | Minuartia orthotrichoides Schischkin | MIOR3 |
| Minuartia elegans | Minuartia rossii (R. Br. ex Richards.) Graebn. var. elegans (Cham. & Schlecht.) Hult | MIROE |
| Minuartia filiorum | Arenaria filiorum Maguire | ARFI4 |
| Minuartia filiorum | Arenaria rubella (Wahlenb.) Hiern. var. filiorum (Maguire) Welsh | ARRUF |
| Minuartia glabra | Arenaria glabra Michx. | ARGL14 |
| Minuartia glabra | Arenaria groenlandica (Retz.) Spreng. var. glabra (Michx.) Fern. | ARGRG |
| Minuartia glabra | Minuartia groenlandica (Retz.) Ostenf. ssp. glabra (Michx.) A.& D. L?ve | MIGRG3 |
| Minuartia glabra | Minuartia groenlandica auct. non (Retz.) Ostenf. [misapplied] | MIGR14 |
| Minuartia glabra | Porsildia groenlandica (Retz.) A.& D. L?ve ssp. glabra (Michx.) A.& D. L?ve | POGRG4 |
| Minuartia glabra | Sabulina glabra (Michx.) Small | SAGL15 |
| Minuartia godfreyi | Arenaria godfreyi Shinners | ARGO2 |
| Minuartia godfreyi | Minuartia uniflora auct. non (Walt.) Mattf. [misapplied] | MIUN3 |
| Minuartia godfreyi | Sabulina uniflora auct. non (Walt.) Small [misapplied] | SAUN5 |
| Minuartia godfreyi | Stellaria paludicola Fern. & Schub. | STPA12 |
| Minuartia graminifolia | Arenaria graminifolia Ard. | ARGR18 |
| Minuartia groenlandica | Arenaria groenlandica (Retz.) Spreng. | ARGR9 |
| Minuartia groenlandica | Porsildia groenlandica (Retz.) A.& D. L?ve | POGR18 |
| Minuartia groenlandica | Sabulina groenlandica (Retz.) Small | SAGR18 |
| Minuartia groenlandica | Stellaria labradorica Schrenk | STLA8 |
| Minuartia howellii | Arenaria howellii S. Wats. | ARHO9 |
| Minuartia hybrida | Minuartia tenuifolia (L.) Hiern, nom. illeg. [anomalous] | MITE12 |
| Minuartia macrantha | Alsinanthe macrantha (Rydb.) W.A. Weber | ALMA14 |
| Minuartia macrantha | Arenaria macrantha (Rydb.) A. Nels. ex Coult. & A. Nels. | ARMA12 |
| Minuartia macrocarpa | Arenaria crilloniana W. Drew | ARCR7 |
| Minuartia macrocarpa | Arenaria macrocarpa Pursh | ARMA15 |
| Minuartia macrocarpa | Minuartia macrocarpa (Pursh) Ostenf. var. rosea Hult | MIMAR |
| Minuartia marcescens | Arenaria laricifolia (L.) B.L. Robins. var. marcescens (Fern.) Boivin | ARLAM4 |
| Minuartia marcescens | Arenaria marcescens Fern. | ARMA14 |
| Minuartia michauxii var. michauxii | Arenaria macra A. Nels. & J.F. Macbr. | ARMA13 |
| Minuartia michauxii var. michauxii | Arenaria michauxii (Fenzl) Hook. f. | ARMI13 |
| Minuartia michauxii var. michauxii | Arenaria stricta Michx. | ARST8 |
| Minuartia michauxii var. michauxii | Arenaria stricta Michx. ssp. macra (A. Nels. & J.F. Macbr.) Maguire | ARSTM |
| Minuartia michauxii var. michauxii | Arenaria stricta Michx. var. puberulenta (M.E. Peck) C.L. Hitchc. | ARSTP |
| Minuartia michauxii var. michauxii | Arenaria stricta Michx. var. uliginosa (Schleich. ex Lam. & DC.) Boivin | ARSTU |
| Minuartia michauxii var. michauxii | Arenaria uliginosa Schleich. ex Lam. & DC. | ARUL2 |
| Minuartia michauxii var. michauxii | Minuopsis michauxii (Fenzl) W.A. Weber | MIMI15 |
| Minuartia michauxii var. michauxii | Sabulina stricta (Michx.) Small | SAST13 |
| Minuartia michauxii var. texana | Arenaria stricta Michx. ssp. texana (B.L. Robins.) Maguire | ARSTT3 |
| Minuartia michauxii var. texana | Arenaria stricta Michx. var. texana B.L. Robins. | ARSTT2 |
| Minuartia michauxii var. texana | Arenaria texana (B.L. Robins.) Britt. | ARTE8 |
| Minuartia muscorum | Arenaria muriculata Maguire | ARMU4 |
| Minuartia muscorum | Arenaria patula Michx. var. robusta (Steyermark) McNeill | ARPAR |
| Minuartia muscorum | Minuartia muriculata (Maguire) McNeill | MIMU2 |
| Minuartia muscorum | Minuartia patula (Michx.) Mattf. var. robusta (Steyermark) McNeill | MIPAR |
| Minuartia muscorum | Stellaria muscorum Fassett | STMU |
| Minuartia nuttallii ssp. fragilis | Arenaria nuttallii Pax ssp. fragilis Maguire & A. Holmgren | ARNUF |
| Minuartia nuttallii ssp. fragilis | Arenaria nuttallii Pax var. fragilis (Maguire & A. Holmgren) C.L. Hitchc. | ARNUF2 |
| Minuartia nuttallii ssp. gracilis | Arenaria nuttallii Pax ssp. gracilis (B.L. Robins.) Maguire | ARNUG |
| Minuartia nuttallii ssp. gracilis | Arenaria nuttallii Pax var. gracilis B.L. Robins. | ARNUG2 |
| Minuartia nuttallii ssp. gregaria | Arenaria gregaria Heller | ARGR8 |
| Minuartia nuttallii ssp. gregaria | Arenaria nuttallii Pax ssp. gregaria (Heller) Maguire | ARNUG4 |
| Minuartia nuttallii ssp. gregaria | Arenaria nuttallii Pax var. gregaria (Heller) Jepson | ARNUG3 |
| Minuartia nuttallii ssp. nuttallii | Alsinopsis occidentalis Heller | ALOC5 |
| Minuartia nuttallii ssp. nuttallii | Arenaria nuttallii Pax | ARNU5 |
| Minuartia nuttallii ssp. nuttallii | Arenaria pungens Nutt. | ARPU16 |
| Minuartia nuttallii ssp. nuttallii | Minuartia pungens (Nutt.) Mattf. | MIPU13 |
| Minuartia nuttallii ssp. nuttallii | Minuopsis nuttallii (Pax) W.A. Weber | MINU5 |
| Minuartia obtusiloba | Alsinopsis obtusiloba Rydb. | ALOB6 |
| Minuartia obtusiloba | Arenaria obtusiloba (Rydb.) Fern. | AROB3 |
| Minuartia obtusiloba | Arenaria sajanensis auct. non Willd. ex Schlecht. [misapplied] | ARSA8 |
| Minuartia obtusiloba | Lidia obtusiloba (Rydb.) A.& D. L?ve | LIOB4 |
| Minuartia obtusiloba | Minuartia sajanensis auct. non (Willd. ex Schlecht.) House [misapplied] | MISA3 |
| Minuartia patula | Arenaria patula Michx. | ARPA27 |
| Minuartia patula | Sabulina patula (Michx.) Small | SAPA28 |
| Minuartia pusilla var. diffusa | Arenaria pusilla S. Wats. var. diffusa Maguire | ARPUD2 |
| Minuartia pusilla var. pusilla | Arenaria pusilla S. Wats. | ARPU15 |
| Minuartia rosei | Arenaria rosei Maguire & Barneby | ARRO7 |
| Minuartia rossii | Alsinanthe rossii (R. Br. ex Richards.) A.& D. L?ve | ALRO7 |
| Minuartia rossii | Alsinopsis rossii (R. Br. ex Richards.) Rydb. | ALRO8 |
| Minuartia rossii | Arenaria rossii R. Br. ex Richards. | ARRO8 |
| Minuartia rossii | Arenaria rossii R. Br. ex Richards. var. daethiana Polunin | ARROD |
| Minuartia rossii | Minuartia rolfii Nannf. | MIRO5 |
| Minuartia rubella | Arenaria propinqua Richards. | ARPR5 |
| Minuartia rubella | Arenaria rubella (Wahlenb.) Hiern. | ARRU5 |
| Minuartia rubella | Arenaria verna L. var. propinqua (Richards.) Fern. | ARVEP |
| Minuartia rubella | Arenaria verna L. var. rubella (Wahlenb.) S. Wats. | ARVER |
| Minuartia rubella | Minuartia rossii (R. Br. ex Richards.) Graebn. var. orthotrichoides auct. non (Schischkin) Hult?n [misapplied] | MIROO |
| Minuartia rubella | Tryphane rubella (Wahlenb.) Reichenb. | TRRU3 |
| Minuartia stricta | Alsinanthe stricta (Sw.) Reichenb. | ALST3 |
| Minuartia tenella | Arenaria tenella Nutt. | ARTE15 |
| Minuartia uniflora | Arenaria alabamensis McCormick, Bozeman & Spongberg | ARAL11 |
| Minuartia uniflora | Arenaria brevifolia Nutt. ex Torr. & Gray | ARBR4 |
| Minuartia uniflora | Arenaria uniflora (Walt.) Muhl. | ARUN3 |
| Minuartia uniflora | Minuartia alabamensis (McCormick, Bozeman & Spongberg) Wyatt | MIAL6 |
| Minuartia uniflora | Sabulina brevifolia (Nutt. ex Torr. & Gray) Small | SABR17 |
| Minuartia uniflora | Sabulina uniflora (Walt.) Small | SAUN6 |
| Minuartia uniflora | Stellaria uniflora Walt. | STUN |
| Minuartia verna | Arenaria verna L. [excluded] | ARVE7 |
| Minuartia yukonensis | Arenaria laricifolia (L.) B.L. Robins. p.p. | ARLA13 |
| Minuartia yukonensis | Arenaria laricifolia (L.) B.L. Robins. var. hultenii Welsh p.p. | ARLAH |
| Minuartia yukonensis | Arenaria laricifolia (L.) B.L. Robins. var. occulta (Ser.) Boivin p.p. | ARLAO |
| Minuartia yukonensis | Lidia yukonensis (Hult?n) A.& D. L?ve | LIYU |
| Moehringia lateriflora | Arenaria lateriflora L. | ARLA15 |
| Moehringia lateriflora | Arenaria lateriflora L. var. angustifolia (Regel) St. John | ARLAA4 |
| Moehringia lateriflora | Arenaria lateriflora L. var. tayloriae St. John | ARLAT |
| Moehringia macrophylla | Arenaria macrophylla Hook. | ARMA18 |
| Moenchia erecta | Moenchia erecta (L.) P. Gaertn., B. Mey., & Scherb. ssp. erecta (L.) P. Gaertn., B. Mey., & Scherb. [superfluous autonym] | MOERE |
| Mojave sandwort | Arenaria macradenia S. Wats. | ARMA3 |
| Mojave sandwort | Arenaria macradenia S. Wats. ssp. macradenia | ARMAM |
| Mojave sandwort | Arenaria macradenia S. Wats. ssp. macradenia var. arcuifolia Maguire | ARMAA2 |
| Mojave sandwort | Arenaria macradenia S. Wats. ssp. macradenia var. macradenia | ARMAM4 |
| Morison's spurry | Spergula morisonii Boreau | SPMO2 |
| moss campion | Silene acaulis (L.) Jacq. | SIAC |
| moss campion | Silene acaulis (L.) Jacq. var. acaulis (L.) Jacq. [excluded] | SIACA3 |
| moss campion | Silene acaulis (L.) Jacq. var. exscapa (All.) DC. | SIACE |
| moss campion | Silene acaulis (L.) Jacq. var. subacaulescens (F.N. Williams) Fern. & St. John | SIACS2 |
| mountain alsinidendron | Alsinidendron trinerve Mann | ALTR5 |
| mountain nailwort | Paronychia montana (Small) Pax & K. Hoffmann | PAMO7 |
| mountain sandwort | Arenaria montana L. | ARMO10 |
| mountain stitchwort | Minuartia biflora (L.) Schinz & Thellung | MIBI9 |
| mouse-ear chickweed | Cerastium L. | CERAS |
| Mt. Dellenbaugh sandwort | Arenaria aberrans M.E. Jones | ARAB |
| myosoton | Myosoton Moench | MYOSO2 |
| Myosoton aquaticum | Alsine aquatica (L.) Britt. | ALAQ |
| Myosoton aquaticum | Cerastium aquaticum L. | CEAQ |
| Myosoton aquaticum | Malachium aquaticum (L.) Fries | MAAQ3 |
| Myosoton aquaticum | Stellaria aquatica (L.) Scop. | STAQ4 |
| nailwort | Paronychia P. Mill. | PARON |
| naked catchfly | Silene aperta Greene | SIAP |
| narrow corncockle | Agrostemma brachyloba (Fenzl) Hammer | AGBR4 |
| Nevada catchfly | Silene nachlingerae Tiehm | SINA2 |
| nightflowering silene | Silene noctiflora L. | SINO |
| Niihau schiedea | Schiedea amplexicaulis Mann | SCAM3 |
| nodding catchfly | Silene pendula L. | SIPE3 |
| nodding chickweed | Cerastium nutans Raf. | CENU2 |
| nodding chickweed | Cerastium nutans Raf. var. nutans | CENUN |
| nodding chickweed | Cerastium nutans Raf. var. obtectum Kearney & Peebles | CENUO |
| North African catchfly | Silene pseudatocion Desf. | SIPS2 |
| northern starwort | Stellaria calycantha (Ledeb.) Bong. | STCA |
| Nuttall's sandwort | Minuartia nuttallii (Pax) Briq. | MINU4 |
| Nuttall's sandwort | Minuartia nuttallii (Pax) Briq. ssp. nuttallii | MINUN2 |
| Oahu schiedea | Schiedea kaalae Wawra | SCKA |
| Oldham's baby's-breath | Gypsophila oldhamiana Miq. | GYOL |
| oldman's cap | Polycarpaea corymbosa (L.) Lam. | POCO30 |
| oneflower stitchwort | Minuartia uniflora (Walt.) Mattf. | MIUN |
| onyxflower | Achyronychia cooperi Torr. & Gray | ACCO3 |
| Oregon silene | Silene oregana S. Wats. | SIOR3 |
| Palmer's catchfly | Silene bernardina S. Wats. | SIBE4 |
| Palmer's catchfly | Silene bernardina S. Wats. ssp. bernardina | SIBEB |
| Palmer's catchfly | Silene bernardina S. Wats. ssp. maguirei Bocquet | SIBEM |
| Palmer's catchfly | Silene bernardina S. Wats. ssp. maguirei Bocquet var. rigidula (B.L. Robins.) Tiehm | SIBER |
| Palmer's catchfly | Silene bernardina S. Wats. ssp. maguirei Bocquet var. sierrae (C.L. Hitchc. & Maguire) Bocquet | SIBES |
| paper nailwort | Paronychia chartacea Fern. | PACH6 |
| paper nailwort | Paronychia chartacea Fern. ssp. chartacea | PACHC |
| paper nailwort | Paronychia chartacea Fern. ssp. minima L.C. Anders. | PACHM |
| papery schiedea | Schiedea membranacea St. John | SCME2 |
| Parish's catchfly | Silene parishii S. Wats. | SIPA3 |
| Parish's catchfly | Silene parishii S. Wats. var. latifolia C.L. Hitchc. & Maguire | SIPAL |
| Parish's catchfly | Silene parishii S. Wats. var. parishii | SIPAP |
| Parish's catchfly | Silene parishii S. Wats. var. viscida C.L. Hitchc. & Maguire | SIPAV |
| Paronychia americana ssp. americana | Siphonychia americana (Nutt.) Torr. & Gray | SIAM3 |
| Paronychia americana ssp. pauciflora | Siphonychia pauciflora Small | SIPA7 |
| Paronychia argyrocoma | Paronychia argyrocoma (Michx.) Nutt. ssp. albimontana (Fern.) Maguire | PAARA3 |
| Paronychia argyrocoma | Paronychia argyrocoma (Michx.) Nutt. var. albimontana Fern. | PAARA |
| Paronychia baldwinii ssp. baldwinii | Anychiastrum baldwinii (Torr. & Gray) Small | ANBA5 |
| Paronychia baldwinii ssp. riparia | Anychiastrum riparium (Chapman) Small | ANRI3 |
| Paronychia baldwinii ssp. riparia | Paronychia baldwinii (Torr. & Gray) Fenzl ex Walp. var. ciliata Chaudhri | PABAC2 |
| Paronychia baldwinii ssp. riparia | Paronychia riparia Chapman | PARI5 |
| Paronychia canadensis | Anychia canadensis (L.) B.S.P. | ANCA16 |
| Paronychia canadensis | Anychia dichotoma Michx. | ANDI7 |
| Paronychia canadensis | Paronychia dichotoma (Michx.) A. Nels. | PADI13 |
| Paronychia chartacea ssp. chartacea | Nyachia pulvinata Small | NYPU |
| Paronychia chartacea ssp. chartacea | Paronychia pulvinata (Small) Pax & K. Hoffmann | PAPU9 |
| Paronychia depressa | Paronychia depressa (Torr. & Gray) Nutt. ex A. Nels. var. brevicuspis (A. Nels.) Chaudhri | PADEB |
| Paronychia depressa | Paronychia depressa (Torr. & Gray) Nutt. ex A. Nels. var. diffusa (A. Nels.) Chaudhri | PADED |
| Paronychia depressa | Paronychia diffusa A. Nels. | PADI14 |
| Paronychia drummondii | Paronychia drummondii Torr. & Gray ssp. parviflora Chaudhri | PADRP |
| Paronychia echinulata | Paronychia echinulata Chater var. echinulata Chater [superfluous autonym] | PAECE |
| Paronychia erecta var. corymbosa | Odontonychia corymbosa Small | ODCO |
| Paronychia erecta var. erecta | Odontonychia erecta (Chapman) Small | ODER |
| Paronychia erecta var. erecta | Siphonychia erecta Chapman | SIER3 |
| Paronychia fastigiata var. fastigiata | Anychia polygonoides Raf. | ANPO4 |
| Paronychia fastigiata var. fastigiata | Paronychia fastigiata (Raf.) Fern. var. typica Fern. | PAFAT |
| Paronychia herniarioides | Gastronychia herniarioides (Michx.) Small | GAHE9 |
| Paronychia jamesii | Paronychia jamesii Torr. & Gray var. hirsuta Chaudhri | PAJAH |
| Paronychia jamesii | Paronychia jamesii Torr. & Gray var. parviflora Chaudhri | PAJAP |
| Paronychia jamesii | Paronychia jamesii Torr. & Gray var. praelongifolia Correll | PAJAP2 |
| Paronychia jamesii | Paronychia wardii Rydb. | PAWA4 |
| Paronychia lindheimeri var. lindheimeri | Paronychia chorizanthoides Small | PACH4 |
| Paronychia montana | Anychiastrum montanum Small | ANMO6 |
| Paronychia montana | Paronychia fastigiata (Raf.) Fern. var. pumila (Wood) Fern. | PAFAP2 |
| Paronychia monticola | Paronychia nudata Correll | PANU8 |
| Paronychia patula | Siphonychia diffusa Chapman | SIDI7 |
| Paronychia pulvinata | Paronychia pulvinata Gray var. longiaristata Chaudhri | PAPUL |
| Paronychia pulvinata | Paronychia sessiliflora Nutt. ssp. pulvinata (Gray) W.A. Weber | PASEP2 |
| Paronychia rugelii var. interior | Odontonychia interior Small | ODIN |
| Paronychia rugelii var. interior | Siphonychia interior (Small) Core | SIIN12 |
| Paronychia rugelii var. rugelii | Gibbesia rugelii (Chapman) Small | GIRU2 |
| Paronychia rugelii var. rugelii | Siphonychia rugellii Chapman | SIRU5 |
| Paronychia virginica | Paronychia parksii Cory | PAPA21 |
| Paronychia virginica | Paronychia scoparia Small | PASC13 |
| Paronychia virginica | Paronychia virginica Spreng. var. parksii (Cory) Chaudhri | PAVIP |
| Paronychia virginica | Paronychia virginica Spreng. var. scoparia (Small) Cory | PAVIS3 |
| Parry's silene | Silene parryi (S. Wats.) C.L. Hitchc. & Maguire | SIPA4 |
| peanut stitchwort | Minuartia rosei (Maguire & Barneby) McNeill | MIRO3 |
| pearlwort | Sagina L. | SAGIN |
| Peel River catchfly | Silene tayloriae (B.L. Robins.) Hult | SITA2 |
| Pennsylvania catchfly | Silene caroliniana Walt. ssp. pensylvanica (Michx.) Clausen | SICAP |
| perennial knawel | Scleranthus perennis L. | SCPE5 |
| perfoliate baby's-breath | Gypsophila perfoliata L. var. perfoliata L. [excluded] | GYPEP2 |
| perfoliate baby's-breath | Gypsophila perfoliata L. [excluded] | GYPE |
| Petrorhagia dubia | Dianthus velutinus Guss. | DIVE3 |
| Petrorhagia dubia | Kohlrauschia velutina (Guss.) Reichenb. | KOVE2 |
| Petrorhagia dubia | Petrorhagia velutina (Guss.) P.W. Ball & Heywood | PEVE3 |
| Petrorhagia dubia | Tunica velutina (Guss.) Fisch. & C.A. Mey. | TUVE |
| Petrorhagia prolifera | Dianthus prolifer L. | DIPR3 |
| Petrorhagia prolifera | Tunica prolifera (L.) Scop. | TUPR2 |
| Petrorhagia saxifraga | Tunica saxifraga (L.) Scop. | TUSA2 |
| pine barren stitchwort | Minuartia caroliniana (Walt.) Mattf. | MICA8 |
| pineland nailwort | Paronychia patula Shinners | PAPA16 |
| pineland scalypink | Stipulicida setacea Michx. | STSE3 |
| pineland scalypink | Stipulicida setacea Michx. var. lacerata James | STSEL2 |
| pineland scalypink | Stipulicida setacea Michx. var. setacea | STSES |
| pinewoods drymary | Drymaria effusa Gray | DREF |
| pinewoods drymary | Drymaria effusa Gray var. depressa (Greene) J. Duke | DREFD |
| pinewoods drymary | Drymaria effusa Gray var. effusa | DREFE |
| pink | Dianthus L. | DIANT |
| pink | Petrorhagia (Ser.) Link | PETRO |
| pink campion | Silene repens Patrin ex Pers. | SIRE3 |
| pink campion | Silene repens Patrin ex Pers. ssp. australis C.L. Hitchc. & Maguire | SIREA |
| pink campion | Silene repens Patrin ex Pers. ssp. purpurata (Greene) C.L. Hitchc. & Maguire | SIREP |
| pitcher's stitchwort | Minuartia patula (Michx.) Mattf. | MIPA6 |
| Plank's catchfly | Silene plankii C.L. Hitchc. & Maguire | SIPL |
| plateau catchfly | Silene petersonii Maguire | SIPE |
| plateau catchfly | Silene petersonii Maguire var. minor C.L. Hitchc. & Maguire | SIPEM |
| plateau catchfly | Silene petersonii Maguire var. petersonii | SIPEP2 |
| polycarpaea | Polycarpaea Lam. | POLYC3 |
| Polycarpaea corymbosa | Polycarpaea nebulosa Lakela | PONE10 |
| Polycarpon tetraphyllum ssp. alsinifolium | Polycarpon alsinifolium (Biv.) DC. | POAL25 |
| Polycarpon tetraphyllum ssp. tetraphyllum | Mollugo tetraphylla L. | MOTE |
| Porsild's starwort | Stellaria porsildii Chinnappa | STPO8 |
| Porter's sandwort | Arenaria fendleri Gray var. porteri Rydb. | ARFEP |
| prickly sandwort | Arenaria aculeata S. Wats. | ARAC2 |
| privetleaf schiedea | Schiedea ligustrina Cham. & Schlecht. | SCLI4 |
| proliferous pink | Petrorhagia nanteuilii (Burnat) P.W. Ball & Heywood | PENA2 |
| prostrate starwort | Stellaria prostrata Baldw. | STPR |
| pseudostellaria | Pseudostellaria Pax | PSEUD20 |
| Pseudostellaria jamesiana | Alsine glutinosa Heller | ALGL9 |
| Pseudostellaria jamesiana | Alsine jamesiana (Torr.) Heller | ALJA5 |
| Pseudostellaria jamesiana | Alsine jamesii (Torr.) Holz. | ALJA6 |
| Pseudostellaria jamesiana | Arenaria jamesiana (Torr.) Shinners | ARJA2 |
| Pseudostellaria jamesiana | Stellaria jamesiana Torr. | STJA3 |
| purple sandspurry | Spergularia purpurea (Pers.) G. Don f. | SPPU8 |
| pygmy pink | Saponaria pumilio (L.) Fenzl ex A. Braun | SAPU13 |
| pygmy starwort | Stellaria parva Pedersen | STPA9 |
| ragged robin | Lychnis flos-cuculi L. | LYFL3 |
| red catchfly | Silene dioica (L.) Clairville | SIDI4 |
| red fir catchfly | Silene invisa C.L. Hitchc. & Maguire | SIIN |
| Red Mountain catchfly | Silene campanulata S. Wats. | SICA5 |
| Red Mountain catchfly | Silene campanulata S. Wats. ssp. campanulata | SICAC |
| Red Mountain catchfly | Silene campanulata S. Wats. ssp. glandulosa C.L. Hitchc. & Maguire | SICAG |
| red sandspurry | Spergularia rubra (L.) J.& K. Presl | SPRU |
| Regel's chickweed | Cerastium regelii Ostenf. | CERE4 |
| ridgetop schiedea | Schiedea mannii St. John | SCMA4 |
| Rio Grande nailwort | Paronychia congesta Correll | PACO16 |
| Rixford's rockwort | Scopulophila rixfordii (Brandeg.) Munz & Johnston | SCRI2 |
| robust starwort | Stellaria oxyphylla B.L. Robins. | STOX2 |
| rock soapwort | Saponaria ocymoides L. | SAOC80 |
| rock stitchwort | Minuartia dawsonensis (Britt.) House | MIDA |
| rockwort | Scopulophila M.E. Jones | SCOPU |
| Rocky Mountain chickweed | Stellaria obtusa Engelm. | STOB |
| Rocky Mountain nailwort | Paronychia pulvinata Gray | PAPU2 |
| rose campion | Lychnis coronaria (L.) Desr. | LYCO |
| rose silene | Silene coeli-rosa (L.) Godr. | SICO14 |
| Ross's sandwort | Minuartia rossii (R. Br. ex Richards.) Graebn. | MIRO4 |
| roundleaf catchfly | Silene rotundifolia Nutt. | SIRO4 |
| royal catchfly | Silene regia Sims | SIRE2 |
| royal schiedea | Schiedea salicaria Hbd. | SCSA3 |
| Rugel's nailwort | Paronychia rugelii (Chapman) Shuttlw. ex Chapman | PARU2 |
| Rugel's nailwort | Paronychia rugelii (Chapman) Shuttlw. ex Chapman var. interior (Small) Chaudhri | PARUI |
| Rugel's nailwort | Paronychia rugelii (Chapman) Shuttlw. ex Chapman var. rugelii | PARUR |
| rupturewort | Herniaria L. | HERNI |
| Sagina apetala | Sagina apetala Ard. var. barbata Fenzl | SAAPB |
| Sagina decumbens ssp. decumbens | Sagina decumbens (Ell.) Torr. & Gray var. smithii (Gray) S. Wats. | SADES |
| Sagina decumbens ssp. occidentalis | Sagina occidentalis S. Wats. | SAOC6 |
| Sagina maxima ssp. crassicaulis | Sagina crassicaulis S. Wats. | SACR9 |
| Sagina maxima ssp. maxima | Sagina crassicaulis S. Wats. var. littoralis (Hult?n) Hult | SACRL |
| Sagina maxima ssp. maxima | Sagina littoralis Hult | SALI5 |
| Sagina maxima ssp. maxima | Sagina maxima Gray var. littorea (Mackenzie) Hara | SAMAL2 |
| Sagina nivalis | Sagina intermedia Fenzl | SAIN9 |
| Sagina nivalis | Spergella intermedia (Fenzl) A.& D. L?ve | SPIN10 |
| Sagina nodosa ssp. borealis | Sagina nodosa (L.) Fenzl var. borealis (Crow) Cronq. | SANOB2 |
| Sagina nodosa ssp. nodosa | Sagina nodosa (L.) Fenzl var. glandulosa (Bess.) Aschers. | SANOG |
| Sagina nodosa ssp. nodosa | Sagina nodosa (L.) Fenzl var. pubescens (Bess.) Mert. & Koch | SANOP3 |
| Sagina nodosa ssp. nodosa | Spergella nodosa (L.) Reichenb. | SPNO |
| Sagina procumbens | Sagina procumbens L. var. compacta Lange | SAPRC |
| Sagina saginoides | Sagina linnaei K. Presl | SALI6 |
| Sagina saginoides | Sagina micrantha (Bunge) Fern. | SAMI16 |
| Sagina saginoides | Sagina saginoides (L.) Karst. var. hesperia Fern. | SASAH |
| Sagina saginoides | Spergella saginoides (L.) Reichenb. | SPSA4 |
| Sagina subulata | Sagina hawaiensis Pax | SAHA4 |
| salt sandspurry | Spergularia salina J.& K. Presl | SPSA5 |
| saltmarsh starwort | Stellaria humifusa Rottb. | STHU |
| San Francisco campion | Silene verecunda S. Wats. | SIVE |
| San Francisco campion | Silene verecunda S. Wats. ssp. andersonii (Clokey) C.L. Hitchc. & Maguire | SIVEA |
| San Francisco campion | Silene verecunda S. Wats. ssp. platyota (S. Wats.) C.L. Hitchc. & Maguire | SIVEP |
| San Francisco campion | Silene verecunda S. Wats. ssp. platyota (S. Wats.) C.L. Hitchc. & Maguire var. eglandulosa C.L. Hitchc. & Maguire | SIVEE |
| San Francisco campion | Silene verecunda S. Wats. ssp. platyota (S. Wats.) C.L. Hitchc. & Maguire var. platyota (S. Wats.) Jepson | SIVEP2 |
| San Francisco campion | Silene verecunda S. Wats. ssp. verecunda | SIVEV |
| San Francisco nailwort | Paronychia franciscana Eastw. | PAFR |
| sandcarpet | Cardionema ramosissimum (Weinm.) A. Nels. & J.F. Macbr. | CARA3 |
| sandspurry | Spergularia (Pers.) J.& K. Presl | SPERG2 |
| sandwort | Arenaria L. | ARENA |
| sandwort | Moehringia L. | MOEHR |
| sandwort drymary | Drymaria arenarioides Humb. & Bonpl. ex J.A. Schultes [excluded] | DRAR7 |
| Saponaria officinalis | Lychnis saponaria Jessen | LYSA4 |
| Saponaria officinalis | Saponaria officinalis L. var. glaberrima Ser. | SAOFG |
| Saponaria pumilio | Silene pumilio (L.) Wulfen | SIPU3 |
| Sargent's catchfly | Silene sargentii S. Wats. | SISA |
| saxifrage pink | Petrorhagia saxifraga (L.) Link | PESA9 |
| schiedea | Schiedea Cham. & Schlecht. | SCHIE |
| Schiedea diffusa | Schiedea diffusa Gray var. angustifolia Wawra | SCDIA |
| Schiedea diffusa | Schiedea diffusa Gray var. macraei Sherff | SCDIM |
| Schiedea globosa | Schiedea globosa Mann var. foliosior O. Deg. & Sherff | SCGLF |
| Schiedea globosa | Schiedea globosa Mann var. graminifolia O. Deg. & Sherff | SCGLG |
| Schiedea globosa | Schiedea remyi Mann | SCRE2 |
| Schiedea globosa | Schiedea remyi Mann var. foliosa Sherff | SCREF |
| Schiedea globosa | Schiedea remyi Mann var. multinervia Sherff | SCREM |
| Schiedea hookeri | Schiedea hookeri Gray var. acrisepala Sherff | SCHOA |
| Schiedea hookeri | Schiedea hookeri Gray var. intercedens Sherff | SCHOI |
| Schiedea kaalae | Schiedea kaalae Wawra var. acutifolia Sherff | SCKAA |
| Schiedea ligustrina | Schiedea ligustrina Cham. & Schlecht. var. nematopoda O. Deg. & Sherff | SCLIN |
| Schiedea lydgatei | Schiedea lydgatei Hbd. var. attenuata O. Deg. & Sherff | SCLYA |
| Schiedea menziesii | Schiedea menziesii Hook. var. forbesii Sherff | SCMEF |
| Schiedea menziesii | Schiedea menziesii Hook. var. lihauensis St. John | SCMEL |
| Schiedea menziesii | Schiedea menziesii Hook. var. spergulacea Hbd. | SCMES |
| Schiedea nuttallii | Schiedea nuttallii Hook. var. lihuensis Sherff | SCNUL |
| Schiedea nuttallii | Schiedea nuttallii Hook. var. pauciflora O. Deg. & Sherff | SCNUP |
| Schiedea pentamera | Schiedea pubescens Hbd. var. purpurascens Sherff | SCPUP |
| Schiedea pubescens var. pubescens | Schiedea nuttallii Hook. var. intermedia Hbd. | SCNUI |
| Schiedea pubescens var. pubescens | Schiedea nuttallii Hook. var. molokaiensis Sherff | SCNUM2 |
| Schiedea pubescens var. pubescens | Schiedea pubescens Hbd. var. degeneri Sherff | SCPUD |
| Schiedea pubescens var. pubescens | Schiedea pubescens Hbd. var. hillebrandii Sherff | SCPUH |
| Schiedea pubescens var. pubescens | Schiedea pubescens Hbd. var. lanaiensis Sherff | SCPUL |
| Schiedea spergulina var. leiopoda | Schiedea spergulina Gray var. major Sherff | SCSPM |
| Schiedea spergulina var. spergulina | Schiedea spergulina Gray var. degeneriana Sherff | SCSPD |
| Schiedea stellarioides | Schiedea stellarioides Mann var. brevifolia Sherff | SCSTB |
| Schiedea stellarioides | Schiedea stellarioides Mann var. hillebrandii Hochr. | SCSTH |
| Schiedea stellarioides | Schiedea stellarioides Mann var. implexoides Sherff | SCSTI |
| Schiedea stellarioides | Schiedea stellarioides Mann var. longifolia Sherff | SCSTL |
| Scleranthus annuus | Scleranthus annuus L. ssp. annuus L. [superfluous autonym] | SCANA5 |
| sea campion | Silene uniflora Roth | SIUN |
| seabluff catchfly | Silene douglasii Hook. | SIDO |
| seabluff catchfly | Silene douglasii Hook. var. douglasii | SIDOD |
| seabluff catchfly | Silene douglasii Hook. var. oraria (M.E. Peck) C.L. Hitchc. & Maguire | SIDOO |
| seabluff catchfly | Silene douglasii Hook. var. rupinae S.R. Kephart & K.B. Sturgeon | SIDOR |
| seaside sandplant | Honckenya peploides (L.) Ehrh. | HOPE |
| seaside sandplant | Honckenya peploides (L.) Ehrh. ssp. diffusa (Hornem.) Hult | HOPED |
| seaside sandplant | Honckenya peploides (L.) Ehrh. ssp. major (Hook.) Hult | HOPEM2 |
| seaside sandplant | Honckenya peploides (L.) Ehrh. ssp. peploides (L.) Ehrh. [excluded] | HOPEP2 |
| seaside sandplant | Honckenya peploides (L.) Ehrh. ssp. robusta (Fern.) Hult | HOPER2 |
| Seely's catchfly | Silene seelyi Morton & J.W. Thompson | SISE2 |
| serpentine stitchwort | Minuartia marcescens (Fern.) House | MIMA5 |
| sharpleaf baby's-breath | Gypsophila acutifolia Stev. ex Spreng. | GYAC |
| sharptip sandwort | Arenaria congesta Nutt. var. cephaloidea (Rydb.) Maguire | ARCOC |
| shiny chickweed | Stellaria nitens Nutt. | STNI |
| shortstalk chickweed | Cerastium brachypodum (Engelm. ex Gray) B.L. Robins. | CEBR3 |
| showy baby's-breath | Gypsophila elegans Bieb. | GYEL |
| Silene ?hampeana | Silene ?intermedia (Schur) Philip nom. illeg., non (Lange) Bocquet | SIIN21 |
| Silene acaulis var. exscapa | Silene acaulis (L.) Jacq. ssp. arctica A.& D. L?ve | SIACA |
| Silene acaulis var. subacaulescens | Silene acaulis (L.) Jacq. ssp. subacaulescens (F.N. Williams) Hult | SIACS |
| Silene antirrhina | Silene antirrhina L. var. confinis Fern. | SIANC |
| Silene antirrhina | Silene antirrhina L. var. depauperata Rydb. | SIAND |
| Silene antirrhina | Silene antirrhina L. var. divaricata B.L. Robins. | SIAND2 |
| Silene antirrhina | Silene antirrhina L. var. laevigata Engelm. & Gray | SIANL |
| Silene antirrhina | Silene antirrhina L. var. subglaber Engelm. & Gray | SIANS |
| Silene antirrhina | Silene antirrhina L. var. vaccarifolia Rydb. | SIANV |
| Silene atropurpurea | Viscaria atropurpurea Griseb. | VIAT3 |
| Silene bernardina ssp. bernardina | Silene montana S. Wats. ssp. bernardina (S. Wats.) C.L. Hitchc. & Maguire | SIMOB |
| Silene bernardina ssp. bernardina | Silene shockleyi S. Wats. | SISH2 |
| Silene bernardina ssp. maguirei var. rigidula | Silene montana S. Wats. var. rigidula B.L. Robins. | SIMOR |
| Silene bernardina ssp. maguirei var. rigidula | Silene montana S. Wats., non Arrond. | SIMO |
| Silene bernardina ssp. maguirei var. sierrae | Silene montana S. Wats. var. sierrae C.L. Hitchc. & Maguire | SIMOS |
| Silene campanulata ssp. glandulosa | Silene campanulata S. Wats. var. orbiculata B.L. Robins. | SICAO |
| Silene campanulata ssp. greenei | Silene campanulata S. Wats. var. greenei S. Wats. | SICAG4 |
| Silene caroliniana ssp. pensylvanica | Silene caroliniana Walt. var. pensylvanica (Michx.) Fern. | SICAP2 |
| Silene caroliniana ssp. pensylvanica | Silene pensylvanica Michx. | SIPE8 |
| Silene caroliniana ssp. wherryi | Silene caroliniana Walt. var. wherryi (Small) Fern. | SICAW2 |
| Silene caroliniana ssp. wherryi | Silene wherryi Small | SIWH |
| Silene coeli-rosa | Lychnis coeli-rosa (L.) Desr. | LYCO9 |
| Silene conica | Pleconax conica (L.) Sourkova | PLCO11 |
| Silene conoidea | Conosilene conica (L.) Fourr. ssp. conoidea (L.) A.L?ve & Kjellq. | COCOC8 |
| Silene conoidea | Pleconax conoidea (L.) Sourkova | PLCO12 |
| Silene dioica | Lychnis dioica L. | LYDI5 |
| Silene dioica | Melandrium dioicum (L.) Coss. & Germ. | MEDI7 |
| Silene dioica | Melandrium dioicum (L.) Coss. & Germ. ssp. rubrum (Wieg.) D. L?ve | MEDIR |
| Silene dioica | Melandrium rubrum (Weig.) Garcke | MERU7 |
| Silene douglasii var. douglasii | Silene douglasii Hook. var. monantha (S. Wats.) B.L. Robins. | SIDOM |
| Silene douglasii var. douglasii | Silene douglasii Hook. var. villosa C.L. Hitchc. & Maguire | SIDOV |
| Silene douglasii var. douglasii | Silene lyallii S. Wats. | SILY2 |
| Silene douglasii var. oraria | Silene oraria M.E. Peck | SIOR6 |
| Silene drummondii var. drummondii | Gastrolychnis drummondii (Hook.) A.& D. L?ve | GADR3 |
| Silene drummondii var. drummondii | Lychnis drummondii (Hook.) S. Wats. | LYDR2 |
| Silene drummondii var. drummondii | Lychnis pudica Boivin | LYPU4 |
| Silene drummondii var. drummondii | Melandrium drummondii (Hook.) Hult | MEDR2 |
| Silene drummondii var. drummondii | Wahlbergella drummondii (Hook.) Rydb. | WADR |
| Silene drummondii var. striata | Lychnis drummondii (Hook.) S. Wats. var. heterochroma Boivin | LYDRH |
| Silene drummondii var. striata | Lychnis drummondii (Hook.) S. Wats. var. striata (Rydb.) Maguire | LYDRS |
| Silene drummondii var. striata | Wahlbergella striata (Rydb.) Rydb. | WAST |
| Silene flos-jovis | Lychnis flos-jovis (L.) Desr. | LYFL6 |
| Silene gallica | Silene anglica L. | SIAN7 |
| Silene hookeri ssp. hookeri | Silene ingramii Tidestrom & Dayton | SIIN7 |
| Silene hookeri ssp. pulverulenta | Silene pulverulenta M.E. Peck | SIPU2 |
| Silene involucrata ssp. elatior | Gastrolychnis involucrata (Cham. & Schlecht.) A.& D. L?ve ssp. elatior (Regel) A.& D. L?ve | GAINE |
| Silene involucrata ssp. elatior | Lychnis apetela L. var. elatior Regel | LYAPE |
| Silene involucrata ssp. elatior | Lychnis furcata (Raf.) Fern. ssp. elatior (Regel) Maguire | LYFUE |
| Silene involucrata ssp. elatior | Lychnis triflora R. Br. ex Sommerf. var. elatior (Regel) Boivin | LYTRE |
| Silene involucrata ssp. elatior | Melandrium affine (J. Vahl ex Fries) J. Vahl var. brachycalyx (Raup) Hult | MEAFB |
| Silene involucrata ssp. elatior | Melandrium brachycalyx Raup | MEBR2 |
| Silene involucrata ssp. involucrata | Gastrolychnis affinis (J. Vahl ex Fries) Tolm. & Kozh. | GAAF |
| Silene involucrata ssp. involucrata | Gastrolychnis involucrata (Cham. & Schlecht.) A.& D. L?ve | GAIN4 |
| Silene involucrata ssp. involucrata | Lychnis affinis J. Vahl ex Fries | LYAF |
| Silene involucrata ssp. involucrata | Lychnis furcata (Raf.) Fern. | LYFU3 |
| Silene involucrata ssp. involucrata | Lychnis gillettii Boivin | LYGI |
| Silene involucrata ssp. involucrata | Melandrium affine (J. Vahl ex Fries) J. Vahl | MEAF4 |
| Silene involucrata ssp. involucrata | Melandrium furcatum (Raf.) Hadac | MEFU3 |
| Silene involucrata ssp. involucrata | Silene furcata Raf. | SIFU3 |
| Silene kingii | Gastrolychnis kingii (S. Wats.) W.A. Weber | GAKI |
| Silene kingii | Lychnis apetala L. var. kingii (S. Wats.) Welsh | LYAPK |
| Silene kingii | Lychnis kingii S. Wats. | LYKI3 |
| Silene kingii | Melandrium kingii (S. Wats.) Tolm. | MEKI |
| Silene kingii | Wahlbergella kingii (S. Wats.) Rydb. | WAKI |
| Silene laciniata ssp. greggii | Silene laciniata Cav. var. greggii (Gray) S. Wats. | SILAG3 |
| Silene lanceolata | Silene lanceolata Gray var. angustifolia Hbd. | SILAA2 |
| Silene lanceolata | Silene lanceolata Gray var. forbesii Sherff | SILAF |
| Silene lanceolata | Silene lanceolata Gray var. hillebrandii Sherff | SILAH |
| Silene latifolia ssp. alba | Lychnis ?loveae Boivin | LYLO2 |
| Silene latifolia ssp. alba | Lychnis alba P. Mill. | LYAL |
| Silene latifolia ssp. alba | Lychnis vespertina Sibthorp | LYVE7 |
| Silene latifolia ssp. alba | Melandrium album (P. Mill.) Garcke | MEAL10 |
| Silene latifolia ssp. alba | Silene alba (P. Mill.) Krause | SIAL12 |
| Silene latifolia ssp. alba | Silene pratensis (Rafn) Godr. & Gren. | SIPR4 |
| Silene macrosperma | Gastrolychnis macrosperma (Porsild) Tolm. & Kozh. | GAMA9 |
| Silene macrosperma | Lychnis apetala L. var. macrosperma (Porsild) Boivin | LYAPM4 |
| Silene macrosperma | Melandrium macrospermum Porsild | MEMA8 |
| Silene macrosperma | Silene uralensis (Rupr.) Bocquet ssp. porsildii Bocquet | SIURP |
| Silene menziesii ssp. dorrii | Anotites dorrii (Kellogg) Greene | ANDO2 |
| Silene menziesii ssp. dorrii | Silene dorrii Kellogg | SIDO3 |
| Silene menziesii ssp. menziesii var. menziesii | Anotites menziesii (Hook.) Greene | ANME5 |
| Silene menziesii ssp. menziesii var. menziesii | Silene obovata Porsild | SIOB2 |
| Silene menziesii ssp. menziesii var. viscosa | Anotites viscosa Greene | ANVI8 |
| Silene menziesii ssp. williamsii | Silene menziesii Hook. var. williamsii (Britt.) Boivin | SIMEW2 |
| Silene menziesii ssp. williamsii | Silene williamsii Britt. | SIWI |
| Silene noctiflora | Melandrium noctiflorum (L.) Fries | MENO3 |
| Silene nuda ssp. insectivora | Silene insectivora Henderson | SIIN10 |
| Silene nuda ssp. nuda | Silene pectinata S. Wats. | SIPE9 |
| Silene parryi | Silene douglasii Hook. var. macounii (S. Wats.) B.L. Robins. | SIDOM2 |
| Silene parryi | Silene macounii S. Wats. | SIMA11 |
| Silene parryi | Silene scouleri Hook. var. macounii (S. Wats.) Boivin | SISCM |
| Silene parryi | Silene tetonensis A. Nels. | SITE4 |
| Silene parryi | Wahlbergella parryi (S. Wats.) Rydb. | WAPA3 |
| Silene polypetala | Silene baldwinii Nutt. | SIBA |
| Silene repens ssp. australis | Silene repens Patrin ex Pers. var. australis (C.L. Hitchc. & Maguire) C.L. Hitchc. | SIREA3 |
| Silene repens ssp. purpurata | Silene purpurata Greene | SIPU5 |
| Silene sargentii | Silene watsonii B.L. Robins. | SIWA3 |
| Silene scouleri ssp. hallii | Silene hallii S. Wats. | SIHA6 |
| Silene scouleri ssp. scouleri var. pacifica | Silene pacifica Eastw. | SIPA9 |
| Silene scouleri ssp. scouleri var. scouleri | Silene grandis Eastw. | SIGR11 |
| Silene scouleri ssp. scouleri var. scouleri | Silene repens Patrin ex Pers. var. costata (Williams) Boivin | SIREC |
| Silene scouleri ssp. scouleri var. scouleri | Silene scouleri Hook. ssp. grandis (Eastw.) C.L. Hitchc. & Maguire | SISCG |
| Silene secundiflora | Silene glauca Lag., nom. illeg. [anomalous] | SIGL9 |
| Silene seelyi | Anotites seelyi (Morton & J.W. Thompson) W.A. Weber | ANSE10 |
| Silene soczaviana | Gastrolychnis soczaviana (Schischkin) Tolm. & Kozh. | GASO |
| Silene soczaviana | Melandrium soczavianum Schischkin | MESO |
| Silene sorensenis | Lychnis sorensenis Boivin | LYSO2 |
| Silene sorensenis | Lychnis triflora R. Br. ex Sommerf. | LYTR4 |
| Silene sorensenis | Melandrium triflorum (R. Br. ex Sommerf.) J. Vahl | METR7 |
| Silene stellata | Silene stellata (L.) Ait. f. var. scabrella Palmer & Steyermark | SISTS |
| Silene struthioloides | Silene hawaiiensis Sherff var. kaupoana (O. Deg. & Sherff) O. Deg. & Sherff | SIHAK |
| Silene taimyrensis | Gastrolychnis ostenfeldii (Porsild) Petrovsky | GAOS |
| Silene taimyrensis | Gastrolychnis taimyrensis (Tolm.) S.K. Czer. | GATA2 |
| Silene taimyrensis | Gastrolychnis triflora (R. Br. ex Sommerf.) Tolm. & Kozh. ssp. dawsonii (B.L. Robins.) A.& D. L?ve | GATRD |
| Silene taimyrensis | Lychnis taimyrensis (Tolm.) Polunin | LYTA2 |
| Silene taimyrensis | Lychnis triflora R. Br. ex Sommerf. ssp. dawsonii (B.L. Robins.) Maguire | LYTRD |
| Silene taimyrensis | Lychnis triflora R. Br. ex Sommerf. var. dawsonii B.L. Robins. | LYTRD2 |
| Silene taimyrensis | Melandrium ostenfeldii Porsild | MEOS |
| Silene taimyrensis | Melandrium taimyrense Tolm. | META3 |
| Silene tayloriae | Gastrolychnis angustifolia Rupr. ssp. tenella (Tolm.) Tolm. & Kozh. | GAANT2 |
| Silene tayloriae | Gastrolychnis involucrata (Cham. & Schlecht.) A.& D. L?ve ssp. tenella (Tolm.) A.& D. L?ve | GAINT |
| Silene tayloriae | Lychnis tayloriae B.L. Robins. | LYTA3 |
| Silene tayloriae | Melandrium angustiflorum (Rupr.) Walp. ssp. tenellum (Tolm.) Kozh. | MEANT |
| Silene tayloriae | Melandrium tayloriae (B.L. Robins.) Tolm. | META2 |
| Silene tayloriae | Melandrium tenellum (Tolm.) Tolm. | METE3 |
| Silene tayloriae | Silene involucrata (Cham. & Schlecht.) Bocquet ssp. tenella (Tolm.) Bocquet | SIINT |
| Silene tayloriae | Wahlbergella tayloriae (B.L. Robins.) Rydb. | WATA |
| Silene uniflora | Silene maritima With. | SIMA13 |
| Silene uniflora | Silene vulgaris (Moench) Garcke ssp. maritima (With.) A. Love & D. Love | SIVUM2 |
| Silene uralensis ssp. attenuata | Lychnis apetala L. ssp. attenuata (Farr) Maguire | LYAPA |
| Silene uralensis ssp. attenuata | Lychnis apetala L. var. attenuata (Farr) C.L. Hitchc. | LYAPA3 |
| Silene uralensis ssp. attenuata | Lychnis attenuata Farr | LYAT |
| Silene uralensis ssp. attenuata | Melandrium apetalum (L.) Fenzl ssp. attenuatum (Farr) Hara | MEAPA |
| Silene uralensis ssp. attenuata | Silene attenuata (Farr) Bocquet | SIAT2 |
| Silene uralensis ssp. attenuata | Silene wahlbergella Chowdhuri ssp. attenuata (Farr) Hult | SIWAA |
| Silene uralensis ssp. attenuata | Wahlbergella attenuata (Farr) Rydb. | WAAT |
| Silene uralensis ssp. montana | Lychnis apetala L. ssp. montana (S. Wats.) Maguire | LYAPM3 |
| Silene uralensis ssp. montana | Lychnis apetala L. var. montana (S. Wats.) C.L. Hitchc. | LYAPM2 |
| Silene uralensis ssp. montana | Lychnis montana S. Wats. | LYMO2 |
| Silene uralensis ssp. montana | Silene hitchguirei Bocquet | SIHI9 |
| Silene uralensis ssp. montana | Silene montana S. Wats. var. viscida Henderson | SIMOV |
| Silene uralensis ssp. montana | Silene wahlbergella Chowdhuri ssp. montana (S. Wats.) Hult | SIWAM |
| Silene uralensis ssp. montana | Wahlbergella montana (S. Wats.) Rydb. | WAMO |
| Silene uralensis ssp. ogilviensis | Gastrolychnis soczaviana (Schischkin) Tolm. & Kozh. ssp. ogilviensis (Porsild) A.& D. L?ve | GASOO |
| Silene uralensis ssp. ogilviensis | Melandrium apetalum (L.) Fenzl ssp. ogilviense Porsild | MEAPO |
| Silene uralensis ssp. uralensis | Gastrolychnis apetala (L.) Tolm. & Kozh. | GAAP3 |
| Silene uralensis ssp. uralensis | Gastrolychnis apetala (L.) Tolm. & Kozh. ssp. arctica (Fries) A.& D. L?ve | GAAPA |
| Silene uralensis ssp. uralensis | Gastrolychnis apetala (L.) Tolm. & Kozh. ssp. uralensis (Rupr.) A.& D. L?ve | GAAPU |
| Silene uralensis ssp. uralensis | Gastrolychnis uralensis Rupr. | GAUR3 |
| Silene uralensis ssp. uralensis | Lychnis apetala L. var. arctica (Fries) Cody | LYAPA2 |
| Silene uralensis ssp. uralensis | Lychnis apetala L. var. glabra Regel | LYAPG |
| Silene uralensis ssp. uralensis | Lychnis apetala L., non Silene apetala Willd. | LYAP |
| Silene uralensis ssp. uralensis | Melandrium apetalum (L.) Fenzl | MEAP |
| Silene uralensis ssp. uralensis | Melandrium apetalum (L.) Fenzl ssp. arcticum (Fries) Hult | MEAPA2 |
| Silene uralensis ssp. uralensis | Melandrium apetalum (L.) Fenzl var. glabrum (Regel) Hult | MEAPG |
| Silene uralensis ssp. uralensis | Silene uralensis (Rupr.) Bocquet ssp. apetala (L.) Bocquet | SIURA3 |
| Silene uralensis ssp. uralensis | Silene wahlbergella Chowdhuri | SIWA4 |
| Silene uralensis ssp. uralensis | Silene wahlbergella Chowdhuri ssp. arctica (Fries) Hult | SIWAA2 |
| Silene verecunda ssp. andersonii | Silene andersonii Clokey | SIAN8 |
| Silene verecunda ssp. platyota var. platyota | Silene occidentalis S. Wats. var. nancta Jepson | SIOCN |
| Silene verecunda ssp. platyota var. platyota | Silene platyota S. Wats. | SIPL2 |
| Silene virginica var. virginica | Silene virginica L. var. hallensis A.L. & M.C. Pickens | SIVIH |
| Silene vulgaris | Oberna commutata (Guss.) S. Ikonnikov | OBCO |
| Silene vulgaris | Silene cucubalus Wibel | SICU6 |
| Silene vulgaris | Silene inflata Sm. | SIIN13 |
| Silene vulgaris | Silene latifolia (P. Mill.) Britten & Rendle, non Poir. | SILA16 |
| silvery nailwort | Paronychia argyrocoma (Michx.) Nutt. | PAAR4 |
| simple campion | Silene scouleri Hook. | SISC7 |
| simple campion | Silene scouleri Hook. ssp. hallii (S. Wats.) C.L. Hitchc. & Maguire | SISCH |
| simple campion | Silene scouleri Hook. ssp. pringlei (S. Wats.) C.L. Hitchc. & Maguire | SISCP |
| simple campion | Silene scouleri Hook. ssp. pringlei (S. Wats.) C.L. Hitchc. & Maguire var. concolor (Greene) C.L. Hitchc. & Maguire | SISCC |
| simple campion | Silene scouleri Hook. ssp. pringlei (S. Wats.) C.L. Hitchc. & Maguire var. eglandulosa C.L. Hitchc. & Maguire | SISCE |
| simple campion | Silene scouleri Hook. ssp. pringlei (S. Wats.) C.L. Hitchc. & Maguire var. grisea C.L. Hitchc. & Maguire | SISCG3 |
| simple campion | Silene scouleri Hook. ssp. pringlei (S. Wats.) C.L. Hitchc. & Maguire var. leptophylla C.L. Hitchc. & Maguire | SISCL2 |
| simple campion | Silene scouleri Hook. ssp. pringlei (S. Wats.) C.L. Hitchc. & Maguire var. pringlei (S. Wats.) C.L. Hitchc. & Maguire ex Kartesz & Gandhi | SISCP2 |
| simple campion | Silene scouleri Hook. ssp. scouleri | SISCS2 |
| simple campion | Silene scouleri Hook. ssp. scouleri var. pacifica (Eastw.) C.L. Hitchc. | SISCP3 |
| simple campion | Silene scouleri Hook. ssp. scouleri var. scouleri | SISCS3 |
| Sitka starwort | Stellaria borealis Bigelow ssp. sitchana (Steud.) Piper | STBOS |
| sleepy silene | Silene antirrhina L. | SIAN2 |
| slender chickweed | Cerastium gracile Dufour | CEGR7 |
| slender mountain sandwort | Arenaria capillaris Poir. | ARCA7 |
| slender mountain sandwort | Arenaria capillaris Poir. ssp. capillaris | ARCAC6 |
| slender stitchwort | Minuartia tenella (Nutt.) Mattf. | MITE2 |
| slender-leaf sandwort | Minuartia hybrida (Vill.) Schischk. | MIHY3 |
| slimleaf drymary | Drymaria molluginea (Lag.) Didr. | DRMO2 |
| smooth forked nailwort | Paronychia canadensis (L.) Wood | PACA11 |
| smooth rupturewort | Herniaria glabra L. | HEGL8 |
| snow in summer | Cerastium tomentosum L. | CETO2 |
| snow pearlwort | Sagina nivalis (Lindbl.) Fries | SANI7 |
| soapwort | Saponaria L. | SAPON |
| soapwort | Vaccaria von Wolf | VACCA |
| Sorensen's catchfly | Silene sorensenis (Boivin) Bocquet | SISO3 |
| Spalding's silene | Silene spaldingii S. Wats. | SISP2 |
| Spergula arvensis | Spergula arvensis L. ssp. arvensis L. [superfluous autonym] | SPARA3 |
| Spergula arvensis | Spergula arvensis L. ssp. sativa (Boenn.) Celak. | SPARS2 |
| Spergula arvensis | Spergula arvensis L. var. sativa (Boenn.) Mert. & Koch | SPARS |
| Spergula arvensis | Spergula sativa Boenn. | SPSA6 |
| Spergularia bocconii | Tissa luteola Greene | TILU |
| Spergularia canadensis var. canadensis | Tissa canadensis (Pers.) Britt. | TICA4 |
| Spergularia diandra | Spergularia salsuginea (Bunge) Fenzl | SPSA |
| Spergularia echinosperma | Spergularia salsuginea (Bunge) Fenzl var. bracteata B.L. Robins. | SPSAB |
| Spergularia maritima | Spergularia marginata (DC.) Kittel | SPMA9 |
| Spergularia maritima | Spergularia media (L.) K. Presl ex Griseb. | SPME |
| Spergularia rubra | Spergularia rubra (L.) J.& K. Presl var. perennans (Kindb.) B.L. Robins. | SPRUP |
| Spergularia rubra | Tissa rubra (L.) Britt. | TIRU |
| Spergularia salina | Spergularia alata Wieg. | SPAL4 |
| Spergularia salina | Spergularia leiosperma (Kindb.) F. Schmidt | SPLE3 |
| Spergularia salina | Spergularia marina (L.) Griseb. | SPMA2 |
| Spergularia salina | Spergularia marina (L.) Griseb. var. leiosperma (Kindb.) Guerke | SPMAL3 |
| Spergularia salina | Spergularia marina (L.) Griseb. var. simonii O.& I. Deg. | SPMAS |
| Spergularia salina | Spergularia marina (L.) Griseb. var. tenuis (Greene) R.P. Rossb. | SPMAT |
| Spergularia salina | Spergularia salina J.& K. Presl var. tenuis (Greene) Jepson | SPSAT |
| Spergularia salina | Spergularia sparsiflora (Greene) A. Nels. | SPSP5 |
| Spergularia salina | Spergularia tenuis (Greene) B.L. Robins. var. involucrata B.L. Robins. | SPTEI |
| Spergularia salina | Tissa marina (L.) Britt. | TIMA |
| Spergularia salina | Tissa tenuis Greene | TITE3 |
| Spergularia villosa | Spergularia clevelandii (Greene) B.L. Robins. | SPCL3 |
| Spergularia villosa | Tissa clevelandii Greene | TICL |
| sprawling schiedea | Schiedea hookeri Gray | SCHO |
| spreading nailwort | Paronychia depressa (Torr. & Gray) Nutt. ex A. Nels. | PADE4 |
| spreading pygmyleaf | Loeflingia squarrosa Nutt. | LOSQ |
| spreading pygmyleaf | Loeflingia squarrosa Nutt. ssp. artemisiarum Barneby & Twisselmann | LOSQA |
| spreading pygmyleaf | Loeflingia squarrosa Nutt. ssp. cactorum Barneby & Twisselmann | LOSQC |
| spreading pygmyleaf | Loeflingia squarrosa Nutt. ssp. squarrosa | LOSQS |
| spreading sandwort | Arenaria lanuginosa (Michx.) Rohrb. | ARLA4 |
| spreading sandwort | Arenaria lanuginosa (Michx.) Rohrb. ssp. lanuginosa | ARLAL2 |
| spreading sandwort | Arenaria lanuginosa (Michx.) Rohrb. ssp. lanuginosa var. lanuginosa | ARLAL3 |
| spreading sandwort | Arenaria lanuginosa (Michx.) Rohrb. ssp. lanuginosa var. longipedunculata Duncan | ARLAL4 |
| spreading sandwort | Arenaria lanuginosa (Michx.) Rohrb. ssp. saxosa (Gray) Maguire | ARLAS |
| spreading schiedea | Schiedea diffusa Gray | SCDI4 |
| spurry | Spergula L. | SPERG |
| squareflower | Paronychia erecta (Chapman) Shinners | PAER2 |
| squareflower | Paronychia erecta (Chapman) Shinners var. corymbosa (Small) Chaudhri | PAERC |
| squareflower | Paronychia erecta (Chapman) Shinners var. erecta | PAERE |
| star chickweed | Stellaria pubera Michx. | STPU |
| starwort | Stellaria L. | STELL |
| Stellaria alsine | Alsine uliginosa (Murr.) Britt. | ALUL |
| Stellaria alsine | Stellaria uliginosa Murr. | STUL |
| Stellaria americana | Alsine americana (Porter ex B.L. Robins.) Rydb. | ALAM7 |
| Stellaria americana | Arenaria stephaniana (Willd.) Shinners var. americana (Porter ex B.L. Robins.) Shinners | ARSTA |
| Stellaria americana | Stellaria dichotoma L. var. americana Porter ex B.L. Robins. | STDIA |
| Stellaria antillana | Alsine antillana (Urban) Britt. & P. Wilson | ALAN5 |
| Stellaria borealis ssp. borealis | Alsine borealis (Bigelow) Britt. | ALBO3 |
| Stellaria borealis ssp. borealis | Spergulastrum lanceolatum Michx. | SPLA9 |
| Stellaria borealis ssp. borealis | Stellaria borealis Bigelow var. floribunda Fern. | STBOF |
| Stellaria borealis ssp. borealis | Stellaria borealis Bigelow var. isophylla Fern. | STBOI |
| Stellaria borealis ssp. borealis | Stellaria calycantha (Ledeb.) Bong. ssp. interior Hult | STCAI |
| Stellaria borealis ssp. borealis | Stellaria calycantha (Ledeb.) Bong. var. floribunda (Fern.) Fern. | STCAF |
| Stellaria borealis ssp. borealis | Stellaria calycantha (Ledeb.) Bong. var. isophylla (Fern.) Fern. | STCAI2 |
| Stellaria borealis ssp. borealis | Stellaria calycantha (Ledeb.) Bong. var. latifolia Boivin | STCAL |
| Stellaria borealis ssp. borealis | Stellaria calycantha (Ledeb.) Bong. var. laurentiana Fern. | STCAL2 |
| Stellaria borealis ssp. sitchana | Alsine bongardiana (Fern.) A. Davids. & Moxley | ALBO4 |
| Stellaria borealis ssp. sitchana | Alsine brachypetala (Bong.) T.J. Howell | ALBR7 |
| Stellaria borealis ssp. sitchana | Stellaria bongardiana Fern. | STBO5 |
| Stellaria borealis ssp. sitchana | Stellaria borealis Bigelow ssp. bongardiana (Fern.) Piper & Beattie | STBOB2 |
| Stellaria borealis ssp. sitchana | Stellaria borealis Bigelow var. bongardiana Fern. | STBOB3 |
| Stellaria borealis ssp. sitchana | Stellaria borealis Bigelow var. sitchana (Steud.) Fern. | STBOS2 |
| Stellaria borealis ssp. sitchana | Stellaria brachypetala Bong. var. bongardiana Fern. | STBRB3 |
| Stellaria borealis ssp. sitchana | Stellaria calycantha (Ledeb.) Bong. var. bongardiana (Fern.) Fern. | STCAB2 |
| Stellaria borealis ssp. sitchana | Stellaria calycantha (Ledeb.) Bong. var. sitchana (Steud.) Fern. | STCAS2 |
| Stellaria borealis ssp. sitchana | Stellaria sitchana Steud. | STSI3 |
| Stellaria borealis ssp. sitchana | Stellaria sitchana Steud. var. bongardiana (Fern.) Hult | STSIB2 |
| Stellaria calycantha | Alsine calycantha (Ledeb.) Rydb. | ALCA14 |
| Stellaria calycantha | Alsine simcoei T.J. Howell | ALSI5 |
| Stellaria calycantha | Stellaria borealis Bigelow var. simcoei (T.J. Howell) Fern. | STBOS3 |
| Stellaria calycantha | Stellaria calycantha (Ledeb.) Bong. var. simcoei (T.J. Howell) Fern. | STCAS3 |
| Stellaria calycantha | Stellaria simcoei (T.J. Howell) C.L. Hitchc. | STSI2 |
| Stellaria corei | Alsine tennesseensis (C. Mohr) Small | ALTE7 |
| Stellaria corei | Stellaria pubera Michx. var. sylvatica (Beguinot) Weatherby | STPUS |
| Stellaria corei | Stellaria sylvatica (Beguinot) Maguire | STSY3 |
| Stellaria corei | Stellaria tennesseensis (C. Mohr) Strausbaugh & Core | STTE14 |
| Stellaria crassifolia var. crassifolia | Alsine crassifolia (Ehrh.) Britt. | ALCR11 |
| Stellaria crispa | Alsine crispa (Cham. & Schlecht.) Holz. | ALCR12 |
| Stellaria crispa | Stellaria borealis Bigelow var. crispa (Cham. & Schlecht.) Fenzl ex Torr. & Gray | STBOC |
| Stellaria dicranoides | Arenaria chamissonis Maguire | ARCH8 |
| Stellaria fontinalis | Alsine fontinalis (Short & Peter) Britt. | ALFO2 |
| Stellaria fontinalis | Arenaria fontinalis (Short & Peter) Shinners | ARFO4 |
| Stellaria fontinalis | Sagina fontinalis Short & Peter | SAFO6 |
| Stellaria graminea | Alsine graminea (L.) Britt. | ALGR5 |
| Stellaria graminea | Stellaria graminea L. var. latifolia Peterm. | STGRL |
| Stellaria holostea | Alsine holostea (L.) Britt. | ALHO5 |
| Stellaria humifusa | Alsine humifusa (Rottb.) Britt. | ALHU2 |
| Stellaria humifusa | Stellaria humifusa Rottb. var. oblongifolia Fenzl | STHUO |
| Stellaria humifusa | Stellaria humifusa Rottb. var. suberecta Boivin | STHUS |
| Stellaria longifolia var. atrata | Stellaria atrata (J.W. Moore) Boivin | STAT |
| Stellaria longifolia var. longifolia | Alsine longifolia (Muhl. ex Willd.) Britt. | ALLO3 |
| Stellaria longipes | Alsine longipes (Goldie) Coville | ALLO4 |
| Stellaria longipes | Alsine palmeri Rydb. | ALPA12 |
| Stellaria longipes | Alsine stricta (Richards.) Rydb. | ALST4 |
| Stellaria longipes | Alsine validus Goodding | ALVA3 |
| Stellaria longipes | Stellaria dulcis Gervais | STDU3 |
| Stellaria longipes | Stellaria edwardsii R. Br. | STED |
| Stellaria longipes | Stellaria edwardsii R. Br. var. arctica (Schischkin) Hult | STEDA |
| Stellaria longipes | Stellaria hultenii Boivin | STHU3 |
| Stellaria longipes | Stellaria laeta Richards. | STLA3 |
| Stellaria longipes | Stellaria laeta Richards. var. altocaulis (Hult?n) Boivin | STLAA2 |
| Stellaria longipes | Stellaria laxmannii Fisch. | STLA10 |
| Stellaria longipes | Stellaria longifolia Muhl. ex Willd. var. laeta (Richards.) S. Wats. | STLOL4 |
| Stellaria longipes | Stellaria longipes Goldie ssp. monantha (Hult?n) W.A. Weber | STLOM2 |
| Stellaria longipes | Stellaria longipes Goldie ssp. stricta (Richards.) W.A. Weber | STLOS2 |
| Stellaria longipes | Stellaria longipes Goldie var. altocaulis (Hult?n) C.L. Hitchc. | STLOA |
| Stellaria longipes | Stellaria longipes Goldie var. edwardsii (R. Br.) Gray | STLOE2 |
| Stellaria longipes | Stellaria longipes Goldie var. laeta (Richards.) S. Wats. | STLOL2 |
| Stellaria longipes | Stellaria longipes Goldie var. longipes Goldie [superfluous autonym] | STLOL6 |
| Stellaria longipes | Stellaria longipes Goldie var. monantha (Hult?n) Welsh | STLOM |
| Stellaria longipes | Stellaria longipes Goldie var. subvestita (Greene) Polunin | STLOS |
| Stellaria longipes | Stellaria monantha Hult | STMO2 |
| Stellaria longipes | Stellaria monantha Hult?n ssp. atlantica Hult | STMOA |
| Stellaria longipes | Stellaria monantha Hult?n var. altocaulis Hult | STMOA3 |
| Stellaria longipes | Stellaria monantha Hult?n var. atlantica (Hult?n) Boivin | STMOA2 |
| Stellaria longipes | Stellaria palmeri (Rydb.) Tidestrom | STPA14 |
| Stellaria longipes | Stellaria stricta Richards. | STST8 |
| Stellaria longipes | Stellaria subvestita Greene | STSU2 |
| Stellaria longipes | Stellaria valida (Goodding) Coult. & A. Nels. | STVA3 |
| Stellaria media ssp. media | Alsine media L. | ALME5 |
| Stellaria media ssp. media | Stellaria apetala Ucria ex Roemer | STAP3 |
| Stellaria media ssp. media | Stellaria media (L.) Vill. var. procera Klatt & Richter | STMEP2 |
| Stellaria media ssp. neglecta | Alsine neglecta (Weihe) A.& D. L?ve | ALNE6 |
| Stellaria media ssp. neglecta | Stellaria neglecta Weihe | STNE5 |
| Stellaria media ssp. pallida | Alsine pallida Dumort. | ALPA13 |
| Stellaria media ssp. pallida | Stellaria apetala auct. non Ucria ex Roemer [misapplied] | STAP2 |
| Stellaria media ssp. pallida | Stellaria media (L.) Vill. var. glaberrima G. Beck sensu Fern. | STMEG |
| Stellaria media ssp. pallida | Stellaria pallida (Dumort.) Cr?pin | STPA13 |
| Stellaria nitens | Stellaria praecox A. Nels. | STPR3 |
| Stellaria obtusa | Alsine obtusa (Engelm.) Rose | ALOB7 |
| Stellaria obtusa | Alsine viridula Piper | ALVI8 |
| Stellaria obtusa | Alsine washingtoniana (B.L. Robins.) Heller | ALWA2 |
| Stellaria obtusa | Stellaria viridula (Piper) St. John | STVI8 |
| Stellaria obtusa | Stellaria washingtoniana B.L. Robins. | STWA |
| Stellaria oxyphylla | Alsine oxyphylla (B.L. Robins.) Heller | ALOX3 |
| Stellaria palustris | Alsine glauca (With.) Britt. | ALGL10 |
| Stellaria palustris | Stellaria fennica auct. non (Murb.) Perf. [misapplied] | STFE2 |
| Stellaria palustris | Stellaria glauca With. | STGL3 |
| Stellaria prostrata | Alsine baldwinii Small | ALBA2 |
| Stellaria pubera | Alsine pubera (Michx.) Britt. | ALPU8 |
| Stellaria umbellata | Alsine baicalensis Coville | ALBA3 |
| Stellaria umbellata | Stellaria gonomischa Boivin | STGO |
| Stellaria umbellata | Stellaria weberi Boivin | STWE2 |
| sticky catchfly | Silene caroliniana Walt. | SICA6 |
| sticky catchfly | Silene caroliniana Walt. ssp. caroliniana | SICAC2 |
| sticky chickweed | Cerastium glomeratum Thuill. | CEGL2 |
| sticky drymary | Drymaria viscosa S. Wats. | DRVI4 |
| sticky sandspurry | Spergularia macrotheca (Hornem.) Heynh. | SPMA |
| sticky sandspurry | Spergularia macrotheca (Hornem.) Heynh. var. leucantha (Greene) B.L. Robins. | SPMAL |
| sticky sandspurry | Spergularia macrotheca (Hornem.) Heynh. var. longistyla R.P. Rossb. | SPMAL2 |
| sticky sandspurry | Spergularia macrotheca (Hornem.) Heynh. var. macrotheca | SPMAM |
| stickystem pearlwort | Sagina maxima Gray | SAMA6 |
| stickystem pearlwort | Sagina maxima Gray ssp. crassicaulis (S. Wats.) Crow | SAMAC |
| stickystem pearlwort | Sagina maxima Gray ssp. maxima | SAMAM |
| stipulicida | Stipulicida Michx. | STIPU |
| Stipulicida setacea var. setacea | Stipulicida filiformis Nash | STFI3 |
| stitchwort | Minuartia L. | MINUA |
| stolon sandwort | Minuartia stolonifera T.W. & J.P. Nelson | MIST9 |
| strapwort | Corrigiola litoralis L. | COLI6 |
| striped corn catchfly | Silene conica L. | SICO3 |
| subcongesta sandwort | Arenaria congesta Nutt. var. subcongesta (S. Wats.) S. Wats. | ARCOS2 |
| suffrutescent sandwort | Arenaria congesta Nutt. var. suffrutescens (Gray) B.L. Robins. | ARCOS3 |
| Suksdorf's silene | Silene suksdorfii B.L. Robins. | SISU |
| sweet William silene | Silene armeria L. | SIAR |
| sweetwilliam | Dianthus barbatus L. | DIBA |
| Taimyr catchfly | Silene taimyrensis (Tolm.) Bocquet | SITA |
| Tennessee starwort | Stellaria corei Shinners | STCO7 |
| Texas chickweed | Cerastium texanum Britt. | CETE3 |
| Texas stitchwort | Minuartia michauxii (Fenzl) Farw. var. texana (B.L. Robins.) Mattf. | MIMIT |
| thickleaf drymary | Drymaria pachyphylla Woot. & Standl. | DRPA3 |
| Thompson's sandwort | Arenaria franklinii Dougl. ex Hook. var. thompsonii M.E. Peck | ARFRT |
| threadbranch stitchwort | Minuartia filiorum (Maguire) McNeill | MIFI2 |
| thymeleaf sandwort | Arenaria serpyllifolia L. | ARSE2 |
| tinytim | Geocarpon minimum Mackenzie | GEMI |
| trailing pearlwort | Sagina decumbens (Ell.) Torr. & Gray | SADE |
| trailing pearlwort | Sagina decumbens (Ell.) Torr. & Gray ssp. decumbens | SADED |
| Trans Pecos drymary | Drymaria laxiflora Benth. | DRLA4 |
| Trans-Pecos sandwort | Arenaria ludens Shinners | ARLU2 |
| TransPecos chickweed | Cerastium axillare Correll | CEAX |
| tuber starwort | Pseudostellaria jamesiana (Torr.) W.A. Weber & R.L. Hartman | PSJA2 |
| tundra chickweed | Cerastium gorodkovianum Schischkin | CEGO |
| Turkish baby's-breath | Gypsophila pilosa Huds. | GYPI |
| Tweedy's sandwort | Arenaria fendleri Gray var. tweedyi (Rydb.) Maguire | ARFET3 |
| twinflower sandwort | Minuartia obtusiloba (Rydb.) House | MIOB2 |
| Uinta sandwort | Arenaria kingii (S. Wats.) M.E. Jones ssp. uintahensis (A. Nels.) Maguire | ARKIU2 |
| umbrella starwort | Stellaria umbellata Turcz. ex Kar. & Kir. | STUM |
| upright chickweed | Moenchia Ehrh. | MOENC |
| upright chickweed | Moenchia erecta (L.) P.G. Gaertn., B. Mey. & Scherb. | MOER |
| Vaccaria hispanica | Saponaria vaccaria L. | SAVA4 |
| Vaccaria hispanica | Vaccaria pyramidata Medik. | VAPY |
| Vaccaria hispanica | Vaccaria segetalis Garcke ex Aschers. | VASE4 |
| Vaccaria hispanica | Vaccaria vaccaria (L.) Britt. | VAVA2 |
| Vaccaria hispanica | Vaccaria vulgaris Host | VAVU2 |
| valley schiedea | Schiedea nuttallii Hook. | SCNU3 |
| velezia | Velezia L. | VELEZ |
| velezia | Velezia rigida L. | VERI |
| Waianae Range alsinidendron | Alsinidendron obovatum Sherff | ALOB4 |
| Waianae Range schiedea | Schiedea kealiae Caum & Hosaka | SCKE |
| weed silene | Silene conoidea L. | SICO4 |
| West Indian starwort | Stellaria antillana Urban | STAN2 |
| western catchfly | Silene occidentalis S. Wats. | SIOC |
| western catchfly | Silene occidentalis S. Wats. ssp. longistipitata C.L. Hitchc. & Maguire | SIOCL |
| western catchfly | Silene occidentalis S. Wats. ssp. occidentalis | SIOCO |
| western fringed catchfly | Silene nuda (S. Wats.) C.L. Hitchc. & Maguire | SINU |
| western fringed catchfly | Silene nuda (S. Wats.) C.L. Hitchc. & Maguire ssp. nuda | SINUN |
| western pearlwort | Sagina decumbens (Ell.) Torr. & Gray ssp. occidentalis (S. Wats.) Crow | SADEO |
| western sandspurry | Spergularia canadensis (Pers.) G. Don var. occidentalis R.P. Rossb. | SPCAO |
| Wheeler's sandwort | Arenaria congesta Nutt. var. wheelerensis Maguire | ARCOW |
| Wherry's catchfly | Silene caroliniana Walt. ssp. wherryi (Small) Clausen | SICAW |
| whitesnow | Drymaria cordata (L.) Willd. ex J.A. Schultes | DRCO2 |
| whitesnow | Drymaria cordata (L.) Willd. ex J.A. Schultes ssp. cordata | DRCOC2 |
| whitesnow | Drymaria cordata (L.) Willd. ex J.A. Schultes ssp. diandra (Blume) J. Duke | DRCOD |
| widowsfrill | Silene stellata (L.) Ait. f. | SIST |
| wilhelmsia | Wilhelmsia Reichenb. | WILHE |
| Wilhelmsia physodes | Arenaria physodes Fisch. ex Ser. | ARPH |
| Wilhelmsia physodes | Merckia physodes (Fisch. ex Ser.) Cham. & Schlecht. | MEPH |
| Wilkinson's nailwort | Paronychia wilkinsonii S. Wats. | PAWI3 |
| wingstem spurry | Spergula pentandra L. | SPPE4 |
| wood stitchwort | Stellaria nemorum L. | STNE7 |
| woodland pink | Dianthus sylvestris Wulfen | DISY2 |
| woolly catchfly | Silene thurberi S. Wats. | SITH |
| Wright's catchfly | Silene wrightii Gray | SIWR |
| yellow nailwort | Paronychia virginica Spreng. | PAVI4 |
| yellowgreen catchfly | Silene chlorantha (Willd.) Ehrh. | SICH4 |
| Yukon stitchwort | Minuartia yukonensis Hult | MIYU |
Plant Names