| Common Name | Scientific Name | Code |
| n/a | Oxalis articulata Savigny [excluded] | OXAR5 |
| alpine woodsorrel | Oxalis alpina (Rose) Rose ex R. Knuth | OXAL2 |
| averrhoa | Averrhoa Adans. | AVERR |
| Barrelier's woodsorrel | Oxalis barrelieri L. | OXBA |
| Bermuda buttercup | Oxalis pes-caprae L. | OXPE |
| bilimbi | Averrhoa bilimbi L. | AVBI |
| blue woodsorrel | Oxalis caerulea (Small) R. Knuth | OXCA5 |
| broadleaf woodsorrel | Oxalis latifolia Kunth | OXLA6 |
| California woodsorrel | Oxalis albicans Kunth ssp. californica (Abrams) Eiten | OXALC |
| carambola | Averrhoa carambola L. | AVCA |
| coamo | Oxalis rugeliana Urban | OXRU2 |
| common yellow oxalis | Oxalis stricta L. | OXST |
| creeping woodsorrel | Oxalis corniculata L. | OXCO |
| crimson woodsorrel | Oxalis incarnata L. | OXIN |
| Drummond's woodsorrel | Oxalis drummondii Gray | OXDR |
| dwarf woodsorrel | Oxalis radicosa A. Rich. | OXRA |
| Eggers's woodsorrel | Oxalis eggersii Urban | OXEG |
| great yellow woodsorrel | Oxalis grandis Small | OXGR |
| Illinois woodsorrel | Oxalis illinoensis Schwegm. | OXIL |
| mountain woodsorrel | Oxalis montana Raf. | OXMO |
| oca | Oxalis tuberosa Molina | OXTU2 |
| Oxalis albicans ssp. albicans | Oxalis californica (Abrams) R. Knuth var. subglabra Wieg. | OXCAS |
| Oxalis albicans ssp. albicans | Oxalis corniculata L. ssp. albicans (Kunth) Lourteig | OXCOA2 |
| Oxalis albicans ssp. albicans | Oxalis corniculata L. var. wrightii (Gray) B.L. Turner | OXCOW |
| Oxalis albicans ssp. albicans | Oxalis pilosa Nutt. var. wrightii (Gray) Wieg. | OXPIW |
| Oxalis albicans ssp. albicans | Oxalis wrightii Gray | OXWR |
| Oxalis albicans ssp. albicans | Xanthoxalis albicans (Kunth) Small | XAAL |
| Oxalis albicans ssp. albicans | Xanthoxalis wrightii (Gray) Abrams | XAWR2 |
| Oxalis albicans ssp. californica | Oxalis californica (Abrams) R. Knuth | OXCA |
| Oxalis albicans ssp. pilosa | Oxalis corniculata L. ssp. pilosa (Nutt.) Lourteig | OXCOP |
| Oxalis albicans ssp. pilosa | Oxalis corniculata L. var. pilosa (Nutt.) B.L. Turner | OXCOP2 |
| Oxalis albicans ssp. pilosa | Oxalis pilosa Nutt. | OXPI2 |
| Oxalis albicans ssp. pilosa | Oxalis wrightii Gray var. pilosa (Nutt.) Wieg. | OXWRP |
| Oxalis albicans ssp. pilosa | Xanthoxalis pilosa (Nutt.) Small | XAPI |
| Oxalis alpina | Oxalis metcalfei (Small) R. Knuth | OXME3 |
| Oxalis alpina | Oxalis monticola Small | OXMO3 |
| Oxalis caerulea | Ionoxalis caerulea Small | IOCA |
| Oxalis corniculata | Acetosella corniculata (L.) Kuntze | ACCO7 |
| Oxalis corniculata | Oxalis corniculata L. var. atropurpurea Planch. | OXCOA |
| Oxalis corniculata | Oxalis corniculata L. var. langloisii (Small) Wieg. | OXCOL2 |
| Oxalis corniculata | Oxalis corniculata L. var. lupulina (R. Knuth) Zucc. | OXCOL |
| Oxalis corniculata | Oxalis corniculata L. var. macrophylla Arsene ex R. Knuth | OXCOM |
| Oxalis corniculata | Oxalis corniculata L. var. minor Laing | OXCOM3 |
| Oxalis corniculata | Oxalis corniculata L. var. reptans Laing | OXCOR |
| Oxalis corniculata | Oxalis corniculata L. var. villosa (Bieb.) Hohen. | OXCOV |
| Oxalis corniculata | Oxalis corniculata L. var. viscidula Wieg. | OXCOV2 |
| Oxalis corniculata | Oxalis langloisii (Small) Fedde | OXLA9 |
| Oxalis corniculata | Oxalis pusilla Salisb. | OXPU4 |
| Oxalis corniculata | Oxalis repens Thunb. | OXRE |
| Oxalis corniculata | Oxalis villosa Bieb. | OXVI5 |
| Oxalis corniculata | Xanthoxalis corniculata (L.) Small | XACO2 |
| Oxalis corniculata | Xanthoxalis corniculata (L.) Small var. atropurpurea (Planch.) Moldenke | XACOA |
| Oxalis corniculata | Xanthoxalis langloisii Small | XALA |
| Oxalis corniculata | Xanthoxalis repens (Thunb.) Moldenke | XARE |
| Oxalis debilis var. corymbosa | Oxalis corymbosa DC. | OXCO9 |
| Oxalis decaphylla | Oxalis grayi (Rose) R. Knuth | OXGR4 |
| Oxalis dillenii | Oxalis brittoniae Small | OXBR |
| Oxalis dillenii | Oxalis corniculata L. var. dillenii (Jacq.) Trel. | OXCOD |
| Oxalis dillenii | Oxalis dillenii Jacq. ssp. filipes (Small) Eiten | OXDIF |
| Oxalis dillenii | Oxalis dillenii Jacq. var. radicans Shinners | OXDIR3 |
| Oxalis dillenii | Oxalis filipes Small | OXFI2 |
| Oxalis dillenii | Oxalis florida Salisb. | OXFL |
| Oxalis dillenii | Oxalis florida Salisb. ssp. prostrata (Haw.) Lourteig | OXFLP |
| Oxalis dillenii | Oxalis florida Salisb. var. filipes (Small) Ahles | OXFLF |
| Oxalis dillenii | Oxalis prostrata Haw. | OXPR2 |
| Oxalis dillenii | Oxalis rupestris Raf. | OXRU3 |
| Oxalis dillenii | Oxalis stricta auct. non L. [misapplied] | OXST2 |
| Oxalis dillenii | Xanthoxalis brittoniae (Small) Small | XABR2 |
| Oxalis dillenii | Xanthoxalis dillenii (Jacq.) Holub | XADI |
| Oxalis dillenii | Xanthoxalis filipes (Small) Small | XAFI |
| Oxalis dillenii | Xanthoxalis florida (Salisb.) Moldenke | XAFL |
| Oxalis drummondii | Oxalis amplifolia auct. non (Trel.) R. Knuth [misapplied] | OXAM2 |
| Oxalis frutescens ssp. angustifolia | Oxalis angustifolia Kunth | OXAN2 |
| Oxalis frutescens ssp. angustifolia | Oxalis berlandieri Torr. | OXBE3 |
| Oxalis grandis | Oxalis recurva Trel., non Ell. | OXRE3 |
| Oxalis grandis | Xanthoxalis grandis (Small) Small | XAGR |
| Oxalis intermedia | Ionoxalis intermedia (A. Rich.) Small | IOIN |
| Oxalis latifolia | Ionoxalis martiana (Zucc.) Small | IOMA |
| Oxalis latifolia | Oxalis martiana Zucc. | OXMA5 |
| Oxalis montana | Oxalis acetosella auct. non L. [misapplied] | OXAC3 |
| Oxalis montana | Oxalis acetosella L. ssp. montana (Raf.) Hult?n ex D. L?ve | OXACM |
| Oxalis montana | Oxalis acetosella L. var. rhodantha (Fern.) R. Knuth | OXACR |
| Oxalis oregana | Oxalis acetosella L. ssp. oregana (Nutt.) D. L?ve | OXACO |
| Oxalis oregana | Oxalis oregana Nutt. var. smallii (R. Knuth) M.E. Peck | OXORS |
| Oxalis pes-caprae | Bolboxalis cernua (Thunb.) Small | BOCE |
| Oxalis pes-caprae | Oxalis cernua Thunb. | OXCE |
| Oxalis priceae ssp. colorea | Oxalis colorea (Small) Fedde | OXCO11 |
| Oxalis priceae ssp. colorea | Oxalis dillenii Jacq. var. recurva (Ell.) C.F. Reed | OXDIR2 |
| Oxalis priceae ssp. colorea | Oxalis florida Salisb. var. recurva (Ell.) Ahles | OXFLR |
| Oxalis priceae ssp. colorea | Oxalis recurva Ell. | OXRE2 |
| Oxalis priceae ssp. colorea | Xanthoxalis colorea Small | XACO3 |
| Oxalis priceae ssp. colorea | Xanthoxalis recurva (Ell.) Small | XARE2 |
| Oxalis priceae ssp. priceae | Oxalis caespitosa Raf. | OXCA8 |
| Oxalis priceae ssp. priceae | Oxalis cespitosa Raf. [orthographic variant] | OXCE2 |
| Oxalis priceae ssp. priceae | Oxalis hirsuticaulis Small | OXHI3 |
| Oxalis priceae ssp. priceae | Xanthoxalis hirsuticaulis (Small) Small | XAHI |
| Oxalis priceae ssp. priceae | Xanthoxalis priceae (Small) Small | XAPR |
| Oxalis priceae ssp. texana | Oxalis corniculata L. var. lyonii (Pursh) Zucc. | OXCOL3 |
| Oxalis priceae ssp. texana | Oxalis lyonii Pursh | OXLY |
| Oxalis priceae ssp. texana | Oxalis recurva Ell. var. floridana Wieg. | OXREF |
| Oxalis priceae ssp. texana | Oxalis recurva Ell. var. texana (Small) Wieg. | OXRET |
| Oxalis priceae ssp. texana | Oxalis texana (Small) Fedde | OXTE3 |
| Oxalis priceae ssp. texana | Xanthoxalis lyonii (Pursh) Holub | XALY |
| Oxalis priceae ssp. texana | Xanthoxalis texana Small | XATE3 |
| Oxalis radicosa | Oxalis corniculata L. var. sericea Kunth | OXCOS |
| Oxalis radicosa | Oxalis laxa Hook. & Arn. | OXLA8 |
| Oxalis radicosa | Oxalis micrantha Bertero ex Colla | OXMI2 |
| Oxalis radicosa | Oxalis simulans Baker | OXSI |
| Oxalis rubra | Oxalis articulata Savigny ssp. rubra (St.-Hil.) Lourteig | OXARR |
| Oxalis rugeliana | Oxalis domingensis Urban | OXDO |
| Oxalis stricta | Ceratoxalis coloradensis (Rydb.) Lunell | CECO3 |
| Oxalis stricta | Ceratoxalis cymosa (Small) Lunell | CECY3 |
| Oxalis stricta | Oxalis bushii (Small) Small | OXBU |
| Oxalis stricta | Oxalis coloradensis Rydb. | OXCO8 |
| Oxalis stricta | Oxalis cymosa Small | OXCY |
| Oxalis stricta | Oxalis europaea Jord. | OXEU2 |
| Oxalis stricta | Oxalis europaea Jord. var. bushii (Small) Wieg. | OXEUB2 |
| Oxalis stricta | Oxalis europaea Jord. var. rufa (Small) Young | OXEUR |
| Oxalis stricta | Oxalis fontana Bunge | OXFO |
| Oxalis stricta | Oxalis fontana Bunge var. bushii (Small) Hara | OXFOB |
| Oxalis stricta | Oxalis interior (Small) Fedde | OXIN5 |
| Oxalis stricta | Oxalis rufa Small | OXRU4 |
| Oxalis stricta | Oxalis stricta L. var. decumbens Bitter | OXSTD |
| Oxalis stricta | Oxalis stricta L. var. piletocarpa Wieg. | OXSTP |
| Oxalis stricta | Oxalis stricta L. var. rufa (Small) Farw. | OXSTR |
| Oxalis stricta | Oxalis stricta L. var. villicaulis (Wieg.) Farw. | OXSTV |
| Oxalis stricta | Xanthoxalis bushii Small | XABU |
| Oxalis stricta | Xanthoxalis coloradensis (Rydb.) Rydb. | XACO4 |
| Oxalis stricta | Xanthoxalis cymosa (Small) Small | XACY2 |
| Oxalis stricta | Xanthoxalis dillenii (Jacq.) Holub var. piletocarpa (Wieg.) Holub | XADIP |
| Oxalis stricta | Xanthoxalis interior Small | XAIN2 |
| Oxalis stricta | Xanthoxalis rufa (Small) Small | XARU |
| Oxalis stricta | Xanthoxalis stricta (L.) Small | XAST2 |
| Oxalis stricta | Xanthoxalis stricta (L.) Small var. piletocarpa (Wieg.) Moldenke | XASTP2 |
| Oxalis suksdorfii | Oxalis corniculata L. var. macrantha auct. non Trel. [misapplied] | OXCOM2 |
| Oxalis suksdorfii | Oxalis macrantha auct. non (Trel.) Small [misapplied] | OXMA3 |
| Oxalis suksdorfii | Oxalis pumila Nutt. | OXPU3 |
| Oxalis suksdorfii | Oxalis recurva Ell. var. macrantha auct. non (Trel.) Wieg. [misapplied] | OXREM |
| Oxalis suksdorfii | Xanthoxalis macrantha auct. non (Trel.) Small [misapplied] | XAMA2 |
| Oxalis suksdorfii | Xanthoxalis suksdorfii (Trel.) Small | XASU |
| Oxalis trilliifolia | Hesperoxalis trilliifolia (Hook.) Small | HETR9 |
| Oxalis violacea | Ionoxalis violacea (L.) Small | IOVI |
| Oxalis violacea | Oxalis violacea L. var. trichophora Fassett | OXVIT |
| Oxalis violacea | Sassia violacea (L.) Holub | SAVI19 |
| peonyleaf woodsorrel | Oxalis dichondrifolia Gray | OXDI |
| pink woodsorrel | Oxalis debilis Kunth | OXDE3 |
| pink woodsorrel | Oxalis debilis Kunth var. corymbosa (DC.) Lourteig | OXDEC |
| purple woodsorrel | Oxalis purpurea L. | OXPU2 |
| radishroot woodsorrel | Oxalis albicans Kunth | OXAL |
| radishroot woodsorrel | Oxalis albicans Kunth ssp. albicans | OXALA |
| radishroot woodsorrel | Oxalis albicans Kunth ssp. pilosa (Nutt.) Eiten | OXALP |
| red-flower woodsorrel | Oxalis bowiei Lindl. | OXBO3 |
| redwood-sorrel | Oxalis oregana Nutt. | OXOR |
| shrubby woodsorrel | Oxalis frutescens L. | OXFR |
| shrubby woodsorrel | Oxalis frutescens L. ssp. angustifolia (Kunth) Lourteig | OXFRA |
| slender yellow woodsorrel | Oxalis dillenii Jacq. | OXDI2 |
| sorrel | Oxalis macrocarpa (Small) R. Knuth | OXMA7 |
| sorrel | Oxalis nelsonii (Small) R. Knuth | OXNE |
| sorrel | Oxalis regnellii Miq. | OXRE5 |
| sorrel | Oxalis rosea Feuillee ex Jacq. | OXRO4 |
| spiral sorrel | Oxalis spiralis G. Don | OXSP5 |
| Suksdorf woodsorrel | Oxalis suksdorfii Trel. | OXSU |
| tenleaf woodsorrel | Oxalis decaphylla Kunth | OXDE4 |
| Texas woodsorrel | Oxalis priceae Small ssp. texana (Small) Eiten | OXPRT |
| threeleaf woodsorrel | Oxalis trilliifolia Hook. | OXTR |
| tropical woodsorrel | Oxalis hirta L. | OXHI |
| tufted yellow woodsorrel | Oxalis priceae Small | OXPR |
| tufted yellow woodsorrel | Oxalis priceae Small ssp. colorea (Small) Eiten | OXPRC |
| tufted yellow woodsorrel | Oxalis priceae Small ssp. priceae | OXPRP |
| violet woodsorrel | Oxalis violacea L. | OXVI |
| volcanic sorrel | Oxalis spiralis Donn. Sm. ssp. vulcanicola (Donn.Sm.) Lourteig | OXSPV2 |
| West Indian woodsorrel | Oxalis intermedia A. Rich. | OXIN2 |
| windowbox woodsorrel | Oxalis rubra St.-Hil. | OXRU |
| woodsorrel | Oxalis L. | OXALI |