| Common Name | Scientific Name | Code |
| n/a | Centaurium littorale (D. Turner) Gilmour [excluded] | CELI7 |
| n/a | Gentiana ?billingtonii Farw. (pro sp.) [andrewsii ? puberulenta] | GEBI5 |
| n/a | Gentiana ?curtisii J. Pringle [alba ? puberulenta] | GECU3 |
| n/a | Gentiana ?grandilacustris J. Pringle [andrewsii ? rubricaulis] | GEGR5 |
| n/a | Gentiana ?pallidocyanea J. Pringle [alba ? andrewsii] | GEPA4 |
| n/a | Gentiana verna L. [excluded] | GEVE6 |
| n/a | Gentianella crinita (Froel.) G. Don ssp. nevadensis (Gilg) Weaver & Rudenberg [excluded] | GECRN2 |
| n/a | Swertia usambarensis Engl. | SWUS |
| agueweed | Gentianella quinquefolia (L.) Small | GEQU2 |
| agueweed | Gentianella quinquefolia (L.) Small ssp. occidentalis (Gray) J. Gillett | GEQUO |
| agueweed | Gentianella quinquefolia (L.) Small ssp. quinquefolia | GEQUQ |
| alkali centaury | Centaurium trichanthum (Griseb.) B.L. Robins. | CETR2 |
| alpine gentian | Gentiana newberryi Gray | GENE |
| alpine gentian | Gentiana newberryi Gray var. newberryi | GENEN |
| American columbo | Frasera caroliniensis Walt. | FRCA2 |
| American spurred gentian | Halenia deflexa (Sm.) Griseb. | HADE2 |
| American spurred gentian | Halenia deflexa (Sm.) Griseb. ssp. deflexa | HADED2 |
| Appalachian gentian | Gentiana austromontana Pringle & Sharp | GEAU3 |
| Appalachian rose gentian | Sabatia capitata (Raf.) Blake | SACA27 |
| Arizona centaury | Centaurium arizonicum (Gray) Heller | CEAR12 |
| Arizona centaury | Centaurium calycosum (Buckl.) Fern. | CECA3 |
| autumn dwarf gentian | Gentianella amarella (L.) B?erner | GEAM3 |
| autumn dwarf gentian | Gentianella amarella (L.) B?erner ssp. acuta (Michx.) J. Gillett | GEAMA |
| autumn dwarf gentian | Gentianella amarella (L.) B?erner ssp. heterosepala (Engelm.) J. Gillett | GEAMH |
| Bartonia paniculata ssp. iodandra | Bartonia iodandra B.L. Robins. | BAIO |
| Bartonia paniculata ssp. iodandra | Bartonia paniculata (Michx.) Muhl. var. intermedia Fern. | BAPAI2 |
| Bartonia paniculata ssp. iodandra | Bartonia paniculata (Michx.) Muhl. var. iodandra (B.L. Robins.) Fern. | BAPAI3 |
| Bartonia paniculata ssp. iodandra | Bartonia paniculata (Michx.) Muhl. var. sabulonensis (Fern.) Fern. | BAPAS |
| Bartonia paniculata ssp. iodandra | Bartonia virginica (L.) B.S.P. var. sabulonensis (Fern.) Boivin | BAVIS |
| Bartonia paniculata ssp. paniculata | Bartonia lanceolata Small | BALA4 |
| Bartonia paniculata ssp. paniculata | Bartonia virginica (L.) B.S.P. var. paniculata (Michx.) Boivin | BAVIP |
| Bartonia paniculata ssp. paniculata | Centaurella paniculata Michx. | CEPA13 |
| Bartonia verna | Centaurella verna Michx. | CEVE6 |
| Bartonia virginica | Sagina virginica L. | SAVI9 |
| Bartram's rose gentian | Sabatia bartramii Wilbur | SABA8 |
| bottle gentian | Gentiana clausa Raf. | GECL |
| branched centaury | Centaurium pulchellum (Sw.) Druce | CEPU3 |
| bristly gentian | Gentiana plurisetosa C.T. Mason | GEPL6 |
| Britton's centaury | Centaurium quitense (Kunth) B.L. Robins. | CEQU |
| broadpetal gentian | Gentiana platypetala Griseb. | GEPL |
| campanilla amarilla | Lisianthius laxiflorus Urban | LILA4 |
| Caribbean wingcup | Schultesia ?heterophylla Miq. | SCHE3 |
| catchfly prairie gentian | Eustoma exaltatum (L.) Salisb. ex G. Don | EUEX5 |
| catchfly prairie gentian | Eustoma exaltatum (L.) Salisb. ex G. Don ssp. exaltatum | EUEXE2 |
| Cathedral Bluff dwarf gentian | Gentianella tortuosa (M.E. Jones) J. Gillett | GETO |
| Centaurium arizonicum | Centaurium calycosum (Buckl.) Fern. var. arizonicum (Gray) Tidestrom | CECAA |
| Centaurium arizonicum | Erythraea calycosa Buckl. var. arizonica Gray | ERCAA5 |
| Centaurium beyrichii | Erythraea beyrichii Torr. & Gray ex Torr. | ERBE10 |
| Centaurium calycosum | Centaurium breviflorum (Shinners) B.L. Turner | CEBR8 |
| Centaurium calycosum | Centaurium calycosum (Buckl.) Fern. var. breviflorum Shinners | CECAB |
| Centaurium calycosum | Centaurium calycosum (Buckl.) Fern. var. nanum (Gray) B.L. Robins. | CECAN |
| Centaurium calycosum | Erythraea calycosa Buckl. | ERCA41 |
| Centaurium erythraea | Centaurium minus auct. non Moench [misapplied] | CEMI8 |
| Centaurium erythraea | Centaurium umbellatum auct. non Gilib. [misapplied] | CEUM |
| Centaurium erythraea | Erythraea centaurium auct. | ERCE4 |
| Centaurium exaltatum | Centaurium namophilum Reveal, Broome & Beatley var. nevadense Broome | CENAN |
| Centaurium exaltatum | Centaurium nuttallii (S. Wats.) Heller | CENU3 |
| Centaurium exaltatum | Cicendia exaltata Griseb. | CIEX |
| Centaurium glanduliferum | Centaurium beyrichii (Torr. & Gray ex Torr.) B.L. Robins. var. glanduliferum Correll | CEBEG |
| Centaurium muehlenbergii | Centaurium curvistamineum (Wittr.) Abrams | CECU3 |
| Centaurium muehlenbergii | Centaurium floribundum (Benth.) B.L. Robins. | CEFL |
| Centaurium quitense | Centaurium brittonii Millsp. & Greenm. | CEBR4 |
| Centaurium quitense | Erythraea quitensis Kunth | ERQU3 |
| centaury | Centaurium Hill | CENTA2 |
| charming centaury | Centaurium venustum (Gray) B.L. Robins. | CEVE3 |
| charming centaury | Centaurium venustum (Gray) B.L. Robins. ssp. abramsii Munz | CEVEA |
| charming centaury | Centaurium venustum (Gray) B.L. Robins. ssp. venustum | CEVEV |
| Chiricahua dwarf gentian | Gentianella microcalyx (J.G. Lemmon) J. Gillett | GEMI3 |
| Chiricahua Mountain dwarf gentian | Gentianella wislizeni (Engelm.) J. Gillett | GEWI2 |
| cicendia | Cicendia Adans. | CICEN |
| Cicendia quadrangularis | Exacum chilense Bertero | EXCH |
| Cicendia quadrangularis | Exacum inflatum Hook. & Arn. | EXIN |
| Cicendia quadrangularis | Gentiana quadrangularis Lam. | GEQU4 |
| Cicendia quadrangularis | Microcala quadrangularis (Lam.) Griseb. | MIQU |
| closed bottle gentian | Gentiana andrewsii Griseb. | GEAN |
| closed bottle gentian | Gentiana andrewsii Griseb. var. andrewsii | GEANA |
| closed gentian | Gentiana rubricaulis Schwein. | GERU |
| clustered green gentian | Frasera fastigiata (Pursh) Heller | FRFA |
| Coahuila frasera | Frasera parryi Torr. | FRPA3 |
| coastal rose gentian | Sabatia calycina (Lam.) Heller | SACA2 |
| Colorado frasera | Frasera coloradensis (Rogers) D.M. Post | FRCO7 |
| crested gentian | Gentiana septemfida Pallas | GESE3 |
| Cusick's frasera | Frasera albicaulis Dougl. ex Griseb. var. cusickii (Gray) C.L. Hitchc. | FRALC2 |
| Dakota gentian | Gentiana andrewsii Griseb. var. dakotica A. Nels. | GEAND |
| Dane's dwarf gentian | Gentianella tenella (Rottb.) B?erner | GETE4 |
| Dane's dwarf gentian | Gentianella tenella (Rottb.) B?erner ssp. tenella | GETET |
| Davy's centaury | Centaurium davyi (Jepson) Abrams | CEDA |
| desert centaury | Centaurium exaltatum (Griseb.) W. Wight ex Piper | CEEX |
| desert frasera | Frasera albomarginata S. Wats. | FRAL5 |
| downy gentian | Gentiana puberulenta J. Pringle | GEPU5 |
| dwarf gentian | Gentianella Moench | GENTI2 |
| eared dwarf gentian | Gentianella auriculata (Pallas) J. Gillett | GEAU5 |
| elkweed | Frasera speciosa Dougl. ex Griseb. | FRSP |
| Elliott's gentian | Gentiana catesbaei Walt. | GECA10 |
| Enicostema verticillatum | Enicostema axillare (Lam.) A. Raynal ssp. littorale auct. non (Blume) A. Raynal [misapplied] | ENAXL |
| Enicostema verticillatum | Enicostema littorale auct. non Blume [misapplied] | ENLI |
| Enicostema verticillatum | Gentiana verticillata L. | GEVE4 |
| European centaury | Centaurium erythraea Rafn | CEER5 |
| Eustoma exaltatum ssp. exaltatum | Eustoma barkleyi Standl. ex Shinners | EUBA6 |
| Eustoma exaltatum ssp. russellianum | Eustoma grandiflorum (Raf.) Shinners | EUGR4 |
| Eustoma exaltatum ssp. russellianum | Eustoma russellianum (Hook.) G. Don | EURU4 |
| felwort | Swertia L. | SWERT |
| felwort | Swertia perennis L. | SWPE |
| fourangle rose gentian | Sabatia quadrangula Wilbur | SAQU |
| fourpart dwarf gentian | Gentianella propinqua (Richards.) J. Gillett | GEPR5 |
| fourpart dwarf gentian | Gentianella propinqua (Richards.) J. Gillett ssp. aleutica (Cham. & Schlecht.) J. Gillett | GEPRA |
| fourpart dwarf gentian | Gentianella propinqua (Richards.) J. Gillett ssp. propinqua | GEPRP |
| Frasera albicaulis var. albicaulis | Frasera nitida Benth. var. albicaulis (Dougl. ex Griseb.) Card | FRNIA |
| Frasera albicaulis var. albicaulis | Leucocraspedum albicaule (Dougl. ex Griseb.) Rydb. | LEAL5 |
| Frasera albicaulis var. albicaulis | Swertia albicaulis (Dougl. ex Griseb.) Kuntze | SWAL2 |
| Frasera albicaulis var. albicaulis | Swertia albicaulis (Griseb.) Kuntze var. albicaulis (Griseb.) Kuntze [superfluous autonym] | SWALA |
| Frasera albicaulis var. albicaulis | Swertia watsonii St. John | SWWA |
| Frasera albicaulis var. columbiana | Swertia albicaulis (Dougl. ex Griseb.) Kuntze var. columbiana (St. John) J. Pringle | SWALC |
| Frasera albicaulis var. columbiana | Swertia columbiana St. John | SWCO2 |
| Frasera albicaulis var. cusickii | Frasera caerulea Mulford | FRCA15 |
| Frasera albicaulis var. cusickii | Frasera coerulea Mulford [orthographic variant] | FRCO6 |
| Frasera albicaulis var. cusickii | Swertia albicaulis (Dougl. ex Griseb.) Kuntze var. cusickii (Gray) J. Pringle | SWALC2 |
| Frasera albicaulis var. cusickii | Swertia cusickii (Gray) St. John | SWCU |
| Frasera albicaulis var. cusickii | Swertia nitida (Benth.) Jepson ssp. cusickii (Gray) Abrams | SWNIC |
| Frasera albicaulis var. idahoensis | Swertia albicaulis (Dougl. ex Griseb.) Kuntze var. idahoensis (St. John) J. Pringle | SWALI |
| Frasera albicaulis var. idahoensis | Swertia idahoensis St. John | SWID |
| Frasera albicaulis var. modocensis | Frasera pahutensis Reveal | FRPA6 |
| Frasera albicaulis var. modocensis | Swertia bethelii St. John | SWBE |
| Frasera albicaulis var. modocensis | Swertia californica St. John | SWCA2 |
| Frasera albicaulis var. modocensis | Swertia modocensis St. John | SWMO2 |
| Frasera albicaulis var. modocensis | Swertia modocensis St. John var. adglabra St. John | SWMOA |
| Frasera albicaulis var. modocensis | Swertia pahutensis (Reveal) J. Pringle | SWPA |
| Frasera albicaulis var. modocensis | Swertia shastensis St. John | SWSH |
| Frasera albicaulis var. modocensis | Swertia sierrae St. John | SWSI |
| Frasera albicaulis var. nitida | Frasera albicaulis Dougl. ex Griseb. ssp. nitida (Benth.) D.M. Post | FRALN2 |
| Frasera albicaulis var. nitida | Frasera nitida Benth. | FRNI2 |
| Frasera albicaulis var. nitida | Swertia albicaulis (Dougl. ex Griseb.) Kuntze var. nitida (Benth.) Jepson | SWALN |
| Frasera albicaulis var. nitida | Swertia eastwoodiae St. John | SWEA |
| Frasera albicaulis var. nitida | Swertia lassenica St. John | SWLA |
| Frasera albicaulis var. nitida | Swertia nitida (Benth.) Jepson | SWNI |
| Frasera albomarginata | Frasera albomarginata S. Wats. var. induta (Tidestrom) Card | FRALI2 |
| Frasera albomarginata | Leucocraspedum albomarginatum (S. Wats.) Rydb. | LEAL6 |
| Frasera albomarginata | Swertia albomarginata (S. Wats.) Kuntze | SWAL3 |
| Frasera caroliniensis | Frasera officinalis W. Bart. | FROF |
| Frasera caroliniensis | Frasera verticillata Raf. | FRVE3 |
| Frasera caroliniensis | Frasera walteri Michx. | FRWA |
| Frasera caroliniensis | Swertia caroliniensis (Walt.) Kuntze | SWCA |
| Frasera coloradensis | Swertia coloradensis Rogers | SWCO |
| Frasera fastigiata | Frasera umpquaensis M.E. Peck & Applegate | FRUM2 |
| Frasera fastigiata | Swertia fastigiata Pursh | SWFA |
| Frasera fastigiata | Swertia umpquaensis (M.E. Peck & Applegate) St. John | SWUM |
| Frasera gypsicola | Swertia gypsicola Barneby | SWGY |
| Frasera montana | Leucocraspedum montanum (Mulford) Rydb. | LEMO7 |
| Frasera montana | Swertia montana (Mulford) St. John | SWMO |
| Frasera neglecta | Swertia neglecta (Hall) Jepson | SWNE |
| Frasera paniculata | Swertia utahensis (M.E. Jones) St. John | SWUT |
| Frasera parryi | Swertia parryi (Torr.) Kuntze | SWPA2 |
| Frasera puberulenta | Frasera albomarginata S. Wats. var. purpusii Jepson | FRALP |
| Frasera puberulenta | Swertia albomarginata (S. Wats.) Kuntze ssp. purpusii (Jepson) E. Murr. | SWALP |
| Frasera puberulenta | Swertia puberulenta (A. Davids.) Jepson | SWPU |
| Frasera speciosa | Frasera angustifolia (Rydb.) Rydb. | FRAN4 |
| Frasera speciosa | Frasera macrophylla Greene | FRMA |
| Frasera speciosa | Frasera speciosa Dougl. ex Griseb. var. angustifolia Rydb. | FRSPA |
| Frasera speciosa | Frasera speciosa Dougl. ex Griseb. var. stenosepala Rydb. | FRSPS |
| Frasera speciosa | Frasera stenosepala (Rydb.) Rydb. | FRST2 |
| Frasera speciosa | Swertia radiata (Kellogg) Kuntze | SWRA |
| Frasera speciosa | Swertia radiata (Kellogg) Kuntze var. macrophylla (Greene) St. John | SWRAM |
| Frasera speciosa | Tesseranthium angustifolium (Rydb.) Rydb. | TEAN4 |
| Frasera speciosa | Tesseranthium macrophyllum (Greene) Rydb. | TEMA4 |
| Frasera speciosa | Tesseranthium radiatum Kellogg | TERA2 |
| Frasera tubulosa | Swertia tubulosa (Coville) Jepson | SWTU |
| fringed gentian | Gentianopsis Ma | GENTI3 |
| gentian | Gentiana acaulis L. | GEAC4 |
| gentian | Gentiana L. | GENTI |
| Gentiana affinis | Dasystephana affinis (Griseb.) Rydb. | DAAF |
| Gentiana affinis | Dasystephana interrupta (Greene) Rydb. | DAIN4 |
| Gentiana affinis | Gentiana affinis Griseb. var. bigelovii (Gray) Kusnez. | GEAFB |
| Gentiana affinis | Gentiana affinis Griseb. var. forwoodii (Gray) Kusnez. | GEAFF |
| Gentiana affinis | Gentiana affinis Griseb. var. major A. Nels. & Kennedy | GEAFM |
| Gentiana affinis | Gentiana affinis Griseb. var. ovata Gray | GEAFO |
| Gentiana affinis | Gentiana affinis Griseb. var. parvidentata Kusnez. | GEAFP |
| Gentiana affinis | Gentiana bigelovii Gray | GEBI4 |
| Gentiana affinis | Gentiana forwoodii Gray | GEFO |
| Gentiana affinis | Gentiana interrupta Greene | GEIN2 |
| Gentiana affinis | Gentiana oregana Engelm. ex Gray | GEOR4 |
| Gentiana affinis | Gentiana rusbyi Greene | GERU2 |
| Gentiana affinis | Pneumonanthe affinis (Griseb.) W.A. Weber | PNAF |
| Gentiana affinis | Pneumonanthe bigelovii (Gray) Greene | PNBI |
| Gentiana alba | Gentiana flavida Gray | GEFL |
| Gentiana algida | Gentiana romanzovii Ledeb. ex Bunge | GERO4 |
| Gentiana algida | Gentianodes algida (Pallas) A.& D. L?ve | GEAL6 |
| Gentiana andrewsii var. andrewsii | Dasystephana andrewsii (Griseb.) Small | DAAN |
| Gentiana andrewsii var. andrewsii | Pneumonanthe andrewsii (Griseb.) W.A. Weber | PNAN |
| Gentiana autumnalis | Dasystephana porphyrio (J.F. Gmel.) Small | DAPO6 |
| Gentiana autumnalis | Gentiana porphyrio J.F. Gmel. | GEPO3 |
| Gentiana calycosa | Gentiana calycosa Griseb. var. obtusiloba (Rydb.) C.L. Hitchc. | GECAO |
| Gentiana calycosa | Gentiana calycosa Griseb. var. xantha A. Nels. | GECAX |
| Gentiana calycosa | Pneumonanthe calycosa (Griseb.) Greene | PNCA |
| Gentiana catesbaei | Dasystephana latifolia (Chapman) Small | DALA9 |
| Gentiana catesbaei | Dasystephana parvifolia (Chapman) Small | DAPA3 |
| Gentiana catesbaei | Gentiana catesbaei Walt. var. nummulariifolia Fern. | GECAN |
| Gentiana catesbaei | Gentiana elliottii Chapman | GEEL |
| Gentiana catesbaei | Gentiana elliottii Chapman var. latifolia Chapman | GEELL |
| Gentiana decora | Dasystephana decora (Pollard) Small | DADE2 |
| Gentiana fremontii | Chondrophylla aquatica auct. non (L.) W.A. Weber [misapplied] | CHAQ |
| Gentiana fremontii | Chondrophylla fremontii (Torr.) A. Nels. | CHFR6 |
| Gentiana fremontii | Ciminalis fremontii (Torr.) W.A. Weber | CIFR2 |
| Gentiana fremontii | Gentiana aquatica auct. non L. [misapplied] | GEAQ |
| Gentiana glauca | Dasystephana glauca (Pallas) Rydb. | DAGL4 |
| Gentiana glauca | Gentianodes glauca (Pallas) A.& D. L?ve | GEGL3 |
| Gentiana linearis | Dasystephana linearis (Froel.) Britt. | DALI |
| Gentiana linearis | Gentiana saponaria L. var. linearis (Froel.) Griseb. | GESAL |
| Gentiana newberryi var. tiogana | Gentiana tiogana Heller | GETI2 |
| Gentiana parryi | Gentiana calycosa Griseb. var. asepala (Maguire) C.L. Hitchc. | GECAA2 |
| Gentiana parryi | Pneumonanthe parryi (Engelm.) Greene | PNPA |
| Gentiana pennelliana | Dasystephana tenuifolia (Raf.) Pennell | DATE7 |
| Gentiana plurisetosa | Gentiana setigera auct. non Gray [misapplied] | GESE4 |
| Gentiana prostrata | Chondrophylla nutans (Bunge) W.A. Weber | CHNU4 |
| Gentiana prostrata | Chondrophylla prostrata (Haenke) J.P. Anders. | CHPR15 |
| Gentiana prostrata | Ciminalis prostrata (Haenke) A.& D. L?ve | CIPR3 |
| Gentiana prostrata | Gentiana nutans Bunge | GENU |
| Gentiana prostrata | Gentiana prostrata Haenke var. americana Engelm. | GEPRA2 |
| Gentiana puberulenta | Gentiana puberula auct. non Michx. [misapplied] | GEPU8 |
| Gentiana rubricaulis | Dasystephana grayi (Kusnez.) Britt. | DAGR3 |
| Gentiana rubricaulis | Gentiana linearis Froel. ssp. rubricaulis (Schwein.) J. Gillett | GELIR |
| Gentiana rubricaulis | Gentiana linearis Froel. var. lanceolata Gray | GELIL |
| Gentiana rubricaulis | Gentiana linearis Froel. var. latifolia Gray | GELIL2 |
| Gentiana saponaria var. saponaria | Dasystephana puberula (Michx.) Small as to type, non sensu Small | DAPU6 |
| Gentiana saponaria var. saponaria | Dasystephana saponaria (L.) Small | DASA2 |
| Gentiana saponaria var. saponaria | Gentiana cherokeensis (W.P. Lemmon) Fern. | GECH |
| Gentiana saponaria var. saponaria | Gentiana puberula Michx. as to type, non Small | GEPU9 |
| Gentiana sceptrum | Gentiana menziesii Griseb. | GEME2 |
| Gentiana sceptrum | Gentiana sceptrum Griseb. var. cascadensis M.E. Peck | GESCC |
| Gentiana sceptrum | Gentiana sceptrum Griseb. var. humilis Engelm. ex Gray | GESCH |
| Gentiana setigera | Gentiana bisetaea T.J. Howell | GEBI3 |
| Gentiana villosa | Dasystephana villosa (L.) Small | DAVI3 |
| Gentiana villosa | Gentiana deloachii (W.P. Lemmon) Shinners | GEDE8 |
| Gentianella amarella ssp. acuta | Amarella acuta (Michx.) Raf. | AMAC5 |
| Gentianella amarella ssp. acuta | Amarella plebeja (Ledeb. ex Spreng.) Greene | AMPL |
| Gentianella amarella ssp. acuta | Amarella plebeja (Ledeb. ex Spreng.) Greene var. holmii (Wettst.) Rydb. | AMPLH |
| Gentianella amarella ssp. acuta | Amarella strictiflora (Rydb.) Greene | AMST5 |
| Gentianella amarella ssp. acuta | Gentiana acuta Michx. | GEAC |
| Gentianella amarella ssp. acuta | Gentiana amarella auct. p.p., non L. | GEAM4 |
| Gentianella amarella ssp. acuta | Gentiana amarella L. ssp. acuta (Michx.) Hult | GEAMA2 |
| Gentianella amarella ssp. acuta | Gentiana amarella L. var. acuta (Michx.) Herder | GEAMA4 |
| Gentianella amarella ssp. acuta | Gentiana amarella L. var. plebeja (Ledeb. ex Spreng.) Hult | GEAMP2 |
| Gentianella amarella ssp. acuta | Gentiana amarella L. var. stricta (Griseb.) S. Wats. | GEAMS |
| Gentianella amarella ssp. acuta | Gentiana plebeja Ledeb. ex Spreng. | GEPL4 |
| Gentianella amarella ssp. acuta | Gentiana plebeja Ledeb. ex Spreng. var. holmii Wettst. | GEPLH |
| Gentianella amarella ssp. acuta | Gentiana strictiflora (Rydb.) A. Nels. | GEST5 |
| Gentianella amarella ssp. acuta | Gentianella acuta (Michx.) Hiitonen | GEAC2 |
| Gentianella amarella ssp. acuta | Gentianella amarella (L.) B?erner var. acuta (Michx.) Herder | GEAMA3 |
| Gentianella amarella ssp. acuta | Gentianella strictiflora (Rydb.) W.A. Weber | GEST10 |
| Gentianella amarella ssp. heterosepala | Amarella scopulorum Greene | AMSC6 |
| Gentianella amarella ssp. heterosepala | Gentiana amarella L. ssp. heterosepala (Engelm.) J. Gillett | GEAMH2 |
| Gentianella amarella ssp. heterosepala | Gentiana heterosepala Engelm. | GEHE3 |
| Gentianella amarella ssp. heterosepala | Gentiana scopulorum (Greene) Tidestrom | GESC3 |
| Gentianella amarella ssp. heterosepala | Gentianella amarella (L.) B?erner var. heterosepala (Engelm.) Dorn | GEAMH3 |
| Gentianella amarella ssp. heterosepala | Gentianella heterosepala (Engelm.) Holub | GEHE4 |
| Gentianella microcalyx | Gentiana microcalyx J.G. Lemmon | GEMI4 |
| Gentianella propinqua ssp. aleutica | Gentiana aleutica Cham. & Schlecht. | GEAL5 |
| Gentianella propinqua ssp. aleutica | Gentianella propinqua (Richards.) J. Gillett var. aleutica (Cham. & Schlecht.) Welsh | GEPRA4 |
| Gentianella propinqua ssp. propinqua | Gentiana arctophila Griseb. | GEAR2 |
| Gentianella propinqua ssp. propinqua | Gentiana propinqua Richards. | GEPR7 |
| Gentianella propinqua ssp. propinqua | Gentiana propinqua Richards. ssp. arctophila (Griseb.) Hult | GEPRA3 |
| Gentianella propinqua ssp. propinqua | Gentianella propinqua (Richards.) J. Gillett ssp. arctophila (Griseb.) Tzvelev | GEPRA5 |
| Gentianella quinquefolia ssp. occidentalis | Gentiana quinquefolia L. var. occidentalis Gray | GEQUO2 |
| Gentianella quinquefolia ssp. occidentalis | Gentianella occidentalis (Gray) Small | GEOC |
| Gentianella quinquefolia ssp. quinquefolia | Gentiana quinquefolia L. | GEQU3 |
| Gentianella tenella ssp. tenella | Comastoma tenellum (Rottb.) Toyokuni | COTE13 |
| Gentianella tenella ssp. tenella | Gentiana tenella Rottb. | GETE8 |
| Gentianella tortuosa | Gentiana tortuosa M.E. Jones | GETO3 |
| Gentianella wislizeni | Gentiana wislizeni Engelm. | GEWI5 |
| Gentianella wrightii | Gentiana wrightii Gray | GEWR |
| Gentianella wrightii | Gentianella amarella (L.) B?erner ssp. wrightii (Gray) J. Gillett | GEAMW |
| Gentianopsis barbellata | Gentiana barbellata Engelm. | GEBA6 |
| Gentianopsis barbellata | Gentianella barbellata (Engelm.) J. Gillett | GEBA3 |
| Gentianopsis crinita | Anthopogon crinitum (Froel.) Raf. | ANCR6 |
| Gentianopsis crinita | Gentiana crinita Froel. | GECR3 |
| Gentianopsis crinita | Gentiana ventricosa Griseb. | GEVE5 |
| Gentianopsis crinita | Gentianella crinita (Froel.) G. Don | GECR4 |
| Gentianopsis detonsa ssp. detonsa | Gentiana barbata Froel. | GEBA4 |
| Gentianopsis detonsa ssp. detonsa | Gentiana detonsa Rottb. | GEDE9 |
| Gentianopsis detonsa ssp. detonsa | Gentiana detonsa Rottb. var. groenlandica Victorin | GEDEG |
| Gentianopsis detonsa ssp. detonsa | Gentiana richardsonii Porsild | GERI3 |
| Gentianopsis detonsa ssp. detonsa | Gentianella detonsa (Rottb.) G. Don | GEDE5 |
| Gentianopsis detonsa ssp. yukonensis | Gentianella detonsa (Rottb.) G. Don ssp. yukonensis J. Gillett | GEDEY2 |
| Gentianopsis holopetala | Gentiana holopetala (Gray) Holm | GEHO6 |
| Gentianopsis holopetala | Gentianella detonsa (Rottb.) G. Don ssp. holopetala (Gray) J. Gillett | GEDEH |
| Gentianopsis macounii | Anthopogon tonsum (Lunell) Rydb. | ANTO6 |
| Gentianopsis macounii | Gentiana crinita Froel. var. tonsa (Lunell) Boivin | GECRT |
| Gentianopsis macounii | Gentiana gaspensis Victorin | GEGA4 |
| Gentianopsis macounii | Gentiana macounii Holm | GEMA9 |
| Gentianopsis macounii | Gentiana tonsa (Lunell) Victorin | GETO4 |
| Gentianopsis macounii | Gentianella crinita (Froel.) G. Don ssp. macounii (Holm) J. Gillett | GECRM |
| Gentianopsis macounii | Gentianopsis procera (Holm) Ma ssp. macounii (Holm) Iltis | GEPRM |
| Gentianopsis macrantha | Gentiana grandis (Gray) Holm | GEGR2 |
| Gentianopsis macrantha | Gentianella detonsa (Rottb.) G. Don ssp. superba (Greene) J. Gillett | GEDES |
| Gentianopsis simplex | Gentiana simplex Gray | GESI6 |
| Gentianopsis simplex | Gentianella simplex (Gray) J. Gillett | GESI4 |
| Gentianopsis thermalis | Gentiana detonsa Rottb. var. unicaulis (A. Nels.) C.L. Hitchc. | GEDEU |
| Gentianopsis thermalis | Gentiana elegans A. Nels. | GEEL2 |
| Gentianopsis thermalis | Gentiana thermalis Kuntze | GETH2 |
| Gentianopsis thermalis | Gentianella detonsa (Rottb.) G. Don ssp. elegans (A. Nels.) J. Gillett | GEDEE |
| Gentianopsis thermalis | Gentianella detonsa (Rottb.) G. Don var. elegans (A. Nels.) Dorn | GEDEE3 |
| Gentianopsis thermalis | Gentianopsis detonsa (Rottb.) Ma var. elegans (A. Nels.) N. Holmgren | GEDEE2 |
| Gentianopsis thermalis | Gentianopsis elegans (A. Nels.) Ma | GEEL3 |
| Gentianopsis virgata | Gentiana crinita Froel. var. browniana (Hook.) Boivin | GECRB |
| Gentianopsis virgata | Gentiana procera Holm | GEPR8 |
| Gentianopsis virgata | Gentianella crinita (Froel.) G. Don ssp. procera (Holm) J. Gillett | GECRP |
| Gentianopsis virgata | Gentianopsis procera (Holm) Ma | GEPR6 |
| ghostplant | Voyria Aubl. | VOYRI |
| grand fringed gentian | Gentianopsis macrantha (D. Don ex G. Don) Iltis | GEMA6 |
| greater fringed gentian | Gentianopsis crinita (Froel.) Ma | GECR2 |
| green gentian | Frasera Walt. | FRASE |
| gypsum centaury | Centaurium maryannum B.L. Turner | CEMA19 |
| Halenia recurva | Swertia recurva Sm. | SWRE |
| harvestbells | Gentiana saponaria L. | GESA |
| harvestbells | Gentiana saponaria L. var. latidens House | GESAL2 |
| harvestbells | Gentiana saponaria L. var. saponaria | GESAS |
| Idaho frasera | Frasera albicaulis Dougl. ex Griseb. var. idahoensis (St. John) C.L. Hitchc. | FRALI |
| Inyo frasera | Frasera puberulenta A. Davids. | FRPU |
| Kern frasera | Frasera tubulosa Coville | FRTU |
| king's scepter gentian | Gentiana sceptrum Griseb. | GESC |
| Lady Bird's centaury | Centaurium texense (Griseb.) Fern. | CETE2 |
| lanceleaf rose gentian | Sabatia difformis (L.) Druce | SADI2 |
| largeflower rose gentian | Sabatia grandiflora (Gray) Small | SAGR8 |
| largeleaf rose gentian | Sabatia macrophylla Hook. | SAMA8 |
| largeleaf rose gentian | Sabatia macrophylla Hook. var. macrophylla | SAMAM2 |
| largeleaf rose gentian | Sabatia macrophylla Hook. var. recurvans (Small) Wilbur | SAMAR |
| lavaslope centaury | Centaurium sebaeoides (Griseb.) Druce | CESE6 |
| leafless ghostplant | Voyria aphylla (Jacq.) Pers. | VOAP |
| lesser fringed gentian | Gentianopsis virgata (Raf.) Holub | GEVI6 |
| lisianthius | Lisianthius P. Br. | LISIA |
| lomatogonium | Lomatogonium A. Braun | LOMAT2 |
| Lomatogonium rotatum | Lomatogonium rotatum (L.) Fries ex Fern. ssp. tenuifolium (Griseb.) Porsild | LOROT |
| Lomatogonium rotatum | Pleurogyne rotata (L.) Griseb. | PLRO3 |
| Macoun's fringed gentian | Gentianopsis macounii (Holm) Iltis | GEMA7 |
| manystem centaury | Centaurium multicaule B.L. Robins. | CEMU5 |
| marsh felwort | Lomatogonium rotatum (L.) Fries ex Fern. | LORO |
| marsh rose gentian | Sabatia dodecandra (L.) B.S.P. | SADO |
| marsh rose gentian | Sabatia dodecandra (L.) B.S.P. var. dodecandra | SADOD |
| marsh rose gentian | Sabatia dodecandra (L.) B.S.P. var. foliosa (Fern.) Wilbur | SADOF |
| Mendocino gentian | Gentiana setigera Gray | GESE2 |
| Modoc frasera | Frasera albicaulis Dougl. ex Griseb. var. modocensis (St. John) N. Holmgren | FRALM |
| moss gentian | Gentiana fremontii Torr. | GEFR |
| Mt. Graham spurred gentian | Halenia recurva (Sm.) Allen | HARE2 |
| Muhlenberg's centaury | Centaurium muehlenbergii (Griseb.) W. Wight ex Piper | CEMU2 |
| narrowleaf gentian | Gentiana linearis Froel. | GELI3 |
| narrowleaf rose gentian | Sabatia brachiata Ell. | SABR9 |
| obolaria | Obolaria L. | OBOLA |
| oneflower fringed gentian | Gentianopsis simplex (Gray) Iltis | GESI3 |
| Oregon timwort | Cicendia quadrangularis (Lam.) Griseb. | CIQU3 |
| pale gentian | Gentiana glauca Pallas | GEGL |
| parasitic ghostplant | Voyria parasitica (Schlecht. & Cham.) Ruyters & Maas | VOPA |
| Parry's gentian | Gentiana parryi Engelm. | GEPA |
| perennial fringed gentian | Gentianopsis barbellata (Engelm.) Iltis | GEBA2 |
| pine barren gentian | Gentiana autumnalis L. | GEAU4 |
| pine green gentian | Frasera neglecta Hall | FRNE |
| pinewoods rose gentian | Sabatia gentianoides Ell. | SAGE |
| plain gentian | Gentiana alba Muhl. ex Nutt. | GEAL4 |
| pleated gentian | Gentiana affinis Griseb. | GEAF |
| Plymouth rose gentian | Sabatia kennedyana Fern. | SAKE |
| prairie gentian | Eustoma Salisb. ex G. Don | EUSTO |
| Pribilof dwarf gentian | Gentianella tenella (Rottb.) B?erner ssp. pribilofii J. Gillett | GETEP2 |
| Puerto Rico ghostplant | Voyria tenella Hook. | VOTE |
| pygmy gentian | Gentiana prostrata Haenke | GEPR3 |
| quinineweed | Centaurium beyrichii (Torr. & Gray ex Torr.) B.L. Robins. | CEBE |
| Rainier pleated gentian | Gentiana calycosa Griseb. | GECA |
| Rocky Mountain fringed gentian | Gentianopsis thermalis (Kuntze) Iltis | GETH |
| rose gentian | Sabatia Adans. | SABAT |
| rose of Plymouth | Sabatia stellaris Pursh | SAST5 |
| rosepink | Sabatia angularis (L.) Pursh | SAAN |
| Sabatia arenicola | Sabatia carnosa Small | SACA32 |
| Sabatia bartramii | Sabatia decandra (Walt.) Harper | SADE6 |
| Sabatia bartramii | Sabatia dodecandra (L.) B.S.P. var. coriacea (Ell.) Ahles | SADOC3 |
| Sabatia brevifolia | Sabatia elliottii Steud. | SAEL3 |
| Sabatia brevifolia | Sabatia paniculata (Michx.) Pursh | SAPA15 |
| Sabatia calycina | Sabatia cubensis (Griseb.) Urban | SACU4 |
| Sabatia calycina | Sabatia gracilis (Michx.) Salisb. var. cubensis Griseb. | SAGRC3 |
| Sabatia campanulata | Sabatia campanulata (L.) Torr. var. gracilis (Michx.) Fern. | SACAG3 |
| Sabatia campanulata | Sabatia gracilis (Michx.) Salisb. | SAGR11 |
| Sabatia capitata | Lapithea boykinii (Gray) Small | LABO2 |
| Sabatia capitata | Lapithea capitata (Raf.) Small | LACA9 |
| Sabatia capitata | Sabatia boykinii Gray | SABO4 |
| Sabatia difformis | Sabatia corymbosa Baldw. | SACO27 |
| Sabatia difformis | Sabatia lanceolata (Walt.) Torr. & Gray | SALA11 |
| Sabatia dodecandra var. dodecandra | Chironia dodecandra L. | CHDO5 |
| Sabatia dodecandra var. dodecandra | Sabatia chloroides (Michx.) Pursh | SACH8 |
| Sabatia dodecandra var. foliosa | Sabatia foliosa Fern. | SAFO5 |
| Sabatia dodecandra var. foliosa | Sabatia harperi Small | SAHA8 |
| Sabatia dodecandra var. foliosa | Sabatia obtusata Blake | SAOB2 |
| Sabatia gentianoides | Lapithea gentianoides (Ell.) Griseb. | LAGE |
| Sabatia grandiflora | Sabatia alainii Victorin | SAAL12 |
| Sabatia grandiflora | Sabatia campanulata (L.) Torr. var. grandiflora (Gray) Blake | SACAG8 |
| Sabatia grandiflora | Sabatia gracilis (Michx.) Salisb. var. grandiflora Gray | SAGRG2 |
| Sabatia kennedyana | Sabatia dodecandra (L.) B.S.P. var. kennedyana (Fern.) Ahles | SADOK |
| Sabatia macrophylla var. recurvans | Sabatia recurvans Small | SARE9 |
| Sabatia quadrangula | Sabatia paniculata auct. non (Michx.) Pursh [misapplied] | SAPA22 |
| Sabatia stellaris | Sabatia maculata (Benth.) Benth. & Hook. f. | SAMA14 |
| Sabatia stellaris | Sabatia palmeri Gray | SAPA27 |
| Sabatia stellaris | Sabatia purpusii Brandeg. | SAPU14 |
| Sabatia stellaris | Sabatia simulata Britt. | SASI8 |
| sand rose gentian | Sabatia arenicola Greenm. | SAAR |
| Santa Catalina Mountain centaury | Centaurium nudicaule (Engelm.) B.L. Robins. | CENU |
| screwstem | Bartonia Muhl. ex Willd. | BARTO |
| short wingcup | Schultesia brachyptera Cham. | SCBR7 |
| shortleaf rose gentian | Sabatia brevifolia Raf. | SABR10 |
| showy gentian | Gentiana decora Pollard | GEDE3 |
| showy prairie gentian | Eustoma exaltatum (L.) Salisb. ex G. Don ssp. russellianum (Hook.) Kartesz | EUEXR |
| Sierra fringed gentian | Gentianopsis holopetala (Gray) Iltis | GEHO3 |
| slender centaury | Centaurium tenuiflorum (Hoffmannsegg & Link) Fritsch | CETE9 |
| slender rose gentian | Sabatia campanulata (L.) Torr. | SACA26 |
| spiked centaury | Centaurium spicatum (L.) Fritsch | CESP3 |
| springloving centaury | Centaurium namophilum Reveal, Broome & Beatley | CENA |
| spurred gentian | Halenia Borkh. | HALEN |
| star gentian | Gentiana cruciata L. | GECR6 |
| stately rose gentian | Sabatia formosa Buckl. | SAFO7 |
| sticky centaury | Centaurium glanduliferum (Correll) B.L. Turner | CEGL6 |
| striped gentian | Gentiana villosa L. | GEVI5 |
| Sunnyside frasera | Frasera gypsicola (Barneby) D.M. Post | FRGY |
| swamp gentian | Gentiana douglasiana Bong. | GEDO |
| Swertia perennis | Swertia perennis L. var. obtusa (Ledeb.) Ledeb. ex Griseb. | SWPEO |
| Texas screwstem | Bartonia texana Correll | BATE2 |
| Texas star | Sabatia campestris Nutt. | SACA3 |
| Tioga gentian | Gentiana newberryi Gray var. tiogana (Heller) J. Pringle | GENET |
| tufted frasera | Frasera paniculata Torr. | FRPA2 |
| twining screwstem | Bartonia paniculata (Michx.) Muhl. | BAPA2 |
| twining screwstem | Bartonia paniculata (Michx.) Muhl. ssp. iodandra (B.L. Robins.) J. Gillett | BAPAI |
| twining screwstem | Bartonia paniculata (Michx.) Muhl. ssp. paniculata | BAPAP |
| Virginia pennywort | Obolaria virginica L. | OBVI |
| Voyria aphylla | Gentiana aphylla Jacq. | GEAP3 |
| Voyria aphylla | Leiphaimos aphylla (Jacq.) Gilg | LEAP |
| Voyria parasitica | Leiphaimos parasitica Schlecht. & Cham. | LEPA9 |
| Voyria parasitica | Voyria mexicana Griseb. | VOME |
| Voyria tenella | Leiphaimos portoricensis Britt. | LEPO2 |
| white frasera | Frasera montana Mulford | FRMO |
| white screwstem | Bartonia verna (Michx.) Raf. ex Bart. | BAVE2 |
| whitehead | Enicostema Blume | ENICO |
| whitehead | Enicostema verticillatum (L.) Engl. ex Gilg | ENVE |
| whitestem frasera | Frasera albicaulis Dougl. ex Griseb. | FRAL2 |
| whitestem frasera | Frasera albicaulis Dougl. ex Griseb. var. albicaulis | FRALA |
| whitestem frasera | Frasera albicaulis Dougl. ex Griseb. var. columbiana (St. John) C.L. Hitchc. | FRALC |
| whitestem frasera | Frasera albicaulis Dougl. ex Griseb. var. nitida (Benth.) C.L. Hitchc. | FRALN |
| whitish gentian | Gentiana algida Pallas | GEAL2 |
| windmill fringed gentian | Gentianopsis detonsa (Rottb.) Ma | GEDE4 |
| windmill fringed gentian | Gentianopsis detonsa (Rottb.) Ma ssp. detonsa | GEDED |
| wingcup | Schultesia Mart. | SCHUL |
| wiregrass gentian | Gentiana pennelliana Fern. | GEPE3 |
| Wright's dwarf gentian | Gentianella wrightii (Gray) Holub | GEWR2 |
| yellow gentian | Gentiana lutea L. | GELU2 |
| yellow screwstem | Bartonia virginica (L.) B.S.P. | BAVI3 |
| Yukon fringed gentian | Gentianopsis detonsa (Rottb.) Ma ssp. yukonensis (J. Gillett) J. Gillett | GEDEY |