| ID | Symbol | Scientific | Common | Family |
| 5274 | ARAUJ | Araujia Brot. | araujia | Asclepiadaceae |
| 5275 | ARSE8 | Araujia sericifera Brot. | white bladderflower | Asclepiadaceae |
| 5276 | ARSE17 | Araujia sericofera Brot. [orthographic error] | Araujia sericifera | Asclepiadaceae |
| 6965 | ASCLE | Asclepias L. | milkweed | Asclepiadaceae |
| 6966 | ASAL | Asclepias albicans S. Wats. | whitestem milkweed | Asclepiadaceae |
| 6967 | ASAM | Asclepias amplexicaulis Sm. | clasping milkweed | Asclepiadaceae |
| 6968 | ASAN5 | Asclepias angustifolia Schweig. | Arizona milkweed | Asclepiadaceae |
| 6969 | ASAR | Asclepias arenaria Torr. | sand milkweed | Asclepiadaceae |
| 6970 | ASAS | Asclepias asperula (Dcne.) Woods. | spider milkweed | Asclepiadaceae |
| 6971 | ASASA | Asclepias asperula (Dcne.) Woods. ssp. asperula | spider milkweed | Asclepiadaceae |
| 6972 | ASASC | Asclepias asperula (Dcne.) Woods. ssp. capricornu (Woods.) Woods. | antelopehorns | Asclepiadaceae |
| 6973 | ASASD | Asclepias asperula (Dcne.) Woods. var. decumbens (Nutt.) Shinners | Asclepias asperula ssp. capricornu | Asclepiadaceae |
| 6974 | ASCA24 | Asclepias capricornu Woods. | Asclepias asperula ssp. capricornu | Asclepiadaceae |
| 6975 | ASCAO | Asclepias capricornu Woods. ssp. occidentalis Woods. | Asclepias asperula ssp. capricornu | Asclepiadaceae |
| 6976 | ASDE16 | Asclepias decumbens (Nutt.) Dcne. | Asclepias asperula ssp. capricornu | Asclepiadaceae |
| 6977 | ASDE15 | Asclepiodora decumbens (Nutt.) Gray | Asclepias asperula ssp. capricornu | Asclepiadaceae |
| 6978 | ASBR | Asclepias brachystephana Engelm. ex Torr. | bract milkweed | Asclepiadaceae |
| 6979 | ASCA3 | Asclepias californica Greene | California milkweed | Asclepiadaceae |
| 6980 | ASCAC3 | Asclepias californica Greene ssp. californica | California milkweed | Asclepiadaceae |
| 6981 | ASCAG | Asclepias californica Greene ssp. greenei Woods. | Greene's milkweed | Asclepiadaceae |
| 6982 | ASCI5 | Asclepias cinerea Walt. | Carolina milkweed | Asclepiadaceae |
| 6983 | ASCO19 | Asclepias connivens Baldw. | largeflower milkweed | Asclepiadaceae |
| 6984 | ANCO27 | Anantherix connivens (Baldw.) Feay | Asclepias connivens | Asclepiadaceae |
| 6985 | ASCO | Asclepias cordifolia (Benth.) Jepson | heartleaf milkweed | Asclepiadaceae |
| 6986 | GOCO2 | Gomphocarpus cordifolius Benth. | Asclepias cordifolia | Asclepiadaceae |
| 6987 | ASCR | Asclepias cryptoceras S. Wats. | pallid milkweed | Asclepiadaceae |
| 6988 | ASCRC2 | Asclepias cryptoceras S. Wats. ssp. cryptoceras | pallid milkweed | Asclepiadaceae |
| 6989 | ASCRD2 | Asclepias cryptoceras S. Wats. ssp. davisii (Woods.) Woods. | Davis's milkweed | Asclepiadaceae |
| 6990 | ASCRD | Asclepias cryptoceras S. Wats. var. davisii (Woods.) W.H. Baker | Asclepias cryptoceras ssp. davisii | Asclepiadaceae |
| 6991 | ASDA2 | Asclepias davisii Woods. | Asclepias cryptoceras ssp. davisii | Asclepiadaceae |
| 6992 | ASCU | Asclepias curassavica L. | bloodflower | Asclepiadaceae |
| 6993 | ASCU8 | Asclepias curtissii Gray | Curtiss's milkweed | Asclepiadaceae |
| 6994 | ASAC8 | Asclepias aceratoides Nash | Asclepias curtissii | Asclepiadaceae |
| 6995 | OXCU | Oxypteryx curtissii (Gray) Small | Asclepias curtissii | Asclepiadaceae |
| 6996 | ASCU9 | Asclepias cutleri Woods. | Cutler's milkweed | Asclepiadaceae |
| 6997 | ASEM | Asclepias emoryi (Greene) Vail | Emory's milkweed | Asclepiadaceae |
| 6998 | ASEN | Asclepias engelmanniana Woods. | Engelmann's milkweed | Asclepiadaceae |
| 6999 | ACAU5 | Acerates auriculata Engelm. ex Torr. | Asclepias engelmanniana | Asclepiadaceae |
| 7000 | ASAU5 | Asclepias auriculata (Engelm. ex Torr.) Holz. | Asclepias engelmanniana | Asclepiadaceae |
| 7001 | ASER | Asclepias eriocarpa Benth. | woollypod milkweed | Asclepiadaceae |
| 7002 | ASERM2 | Asclepias eriocarpa Benth. var. microcarpa Munz & Johnston | Asclepias eriocarpa | Asclepiadaceae |
| 7003 | ASFR5 | Asclepias fremontii Torr. ex Gray | Asclepias eriocarpa | Asclepiadaceae |
| 7004 | ASER2 | Asclepias erosa Torr. | desert milkweed | Asclepiadaceae |
| 7005 | ASEX | Asclepias exaltata L. | poke milkweed | Asclepiadaceae |
| 7006 | ASBI11 | Asclepias bicknellii Vail | Asclepias exaltata | Asclepiadaceae |
| 7007 | ASPH3 | Asclepias phytolaccoides Pursh | Asclepias exaltata | Asclepiadaceae |
| 7008 | ASFA | Asclepias fascicularis Dcne. | Mexican whorled milkweed | Asclepiadaceae |
| 7009 | ASME11 | Asclepias mexicana auct. non Cav. [misapplied] | Asclepias fascicularis | Asclepiadaceae |
| 7010 | ASFE4 | Asclepias feayi Chapman ex Gray | Florida milkweed | Asclepiadaceae |
| 7011 | ASFE6 | Asclepiodella feayi (Chapman ex Gray) Small | Asclepias feayi | Asclepiadaceae |
| 7012 | ASFR13 | Asclepias fruticosa L. | African milkweed | Asclepiadaceae |
| 7013 | GOFR | Gomphocarpus fruticous (L.) Ait. | Asclepias fruticosa | Asclepiadaceae |
| 7014 | ASGL5 | Asclepias glaucescens Kunth | nodding milkweed | Asclepiadaceae |
| 7015 | ASEL | Asclepias elata Benth. | Asclepias glaucescens | Asclepiadaceae |
| 7016 | ASHA6 | Asclepias hallii Gray | Hall's milkweed | Asclepiadaceae |
| 7017 | ASHI | Asclepias hirtella (Pennell) Woods. | green milkweed | Asclepiadaceae |
| 7018 | ACHI5 | Acerates hirtella Pennell | Asclepias hirtella | Asclepiadaceae |
| 7019 | ASLOH2 | Asclepias longifolia Michx. var. hirtella (Pennell) Farmer & Bell | Asclepias hirtella | Asclepiadaceae |
| 7020 | ASHU3 | Asclepias humistrata Walt. | pinewoods milkweed | Asclepiadaceae |
| 7021 | ASHY5 | Asclepias hypoleuca (Gray) Woods. | mahogany milkweed | Asclepiadaceae |
| 7022 | ASIN | Asclepias incarnata L. | swamp milkweed | Asclepiadaceae |
| 7023 | ASINI | Asclepias incarnata L. ssp. incarnata | swamp milkweed | Asclepiadaceae |
| 7024 | ASINP2 | Asclepias incarnata L. ssp. pulchra (Ehrh. ex Willd.) Woods. | swamp milkweed | Asclepiadaceae |
| 7025 | ASINN | Asclepias incarnata L. var. neoscotica Fern. | Asclepias incarnata ssp. pulchra | Asclepiadaceae |
| 7026 | ASINP | Asclepias incarnata L. var. pulchra (Ehrh. ex Willd.) Pers. | Asclepias incarnata ssp. pulchra | Asclepiadaceae |
| 7027 | ASPU13 | Asclepias pulchra Ehrh. ex Willd. | Asclepias incarnata ssp. pulchra | Asclepiadaceae |
| 7028 | ASIN14 | Asclepias involucrata Engelm. ex Torr. | dwarf milkweed | Asclepiadaceae |
| 7029 | ASMA10 | Asclepias macrosperma Eastw. | Asclepias involucrata | Asclepiadaceae |
| 7030 | ASLA | Asclepias labriformis M.E. Jones | Utah milkweed | Asclepiadaceae |
| 7031 | ASLA2 | Asclepias lanceolata Walt. | fewflower milkweed | Asclepiadaceae |
| 7032 | ASLAP3 | Asclepias lanceolata Walt. var. paupercula (Michx.) Fern. | Asclepias lanceolata | Asclepiadaceae |
| 7033 | ASLA3 | Asclepias lanuginosa Nutt. | sidecluster milkweed | Asclepiadaceae |
| 7034 | ACLA4 | Acerates lanuginosa (Nutt.) Dcne. | Asclepias lanuginosa | Asclepiadaceae |
| 7035 | ASOT | Asclepias otarioides auct. non Fourn. [misapplied] | Asclepias lanuginosa | Asclepiadaceae |
| 7036 | ASLA4 | Asclepias latifolia (Torr.) Raf. | broadleaf milkweed | Asclepiadaceae |
| 7037 | ASLE13 | Asclepias lemmonii Gray | Lemmon's milkweed | Asclepiadaceae |
| 7038 | ASLI6 | Asclepias linaria Cav. | pineneedle milkweed | Asclepiadaceae |
| 7039 | ASLI | Asclepias linearis Scheele | slim milkweed | Asclepiadaceae |
| 7040 | ASLO | Asclepias longifolia Michx. | longleaf milkweed | Asclepiadaceae |
| 7041 | ACDE7 | Acerates delticola Small | Asclepias longifolia | Asclepiadaceae |
| 7042 | ACFL4 | Acerates floridana (Lam.) A.S. Hitchc. | Asclepias longifolia | Asclepiadaceae |
| 7043 | ACLO5 | Acerates longifolia (Michx.) Ell. | Asclepias longifolia | Asclepiadaceae |
| 7044 | ASMA | Asclepias macrotis Torr. | longhood milkweed | Asclepiadaceae |
| 7045 | ASME | Asclepias meadii Torr. ex Gray | Mead's milkweed | Asclepiadaceae |
| 7046 | ASMI12 | Asclepias michauxii Dcne. | Michaux's milkweed | Asclepiadaceae |
| 7047 | ASNI3 | Asclepias nivea L. | Caribbean milkweed | Asclepiadaceae |
| 7048 | ASNU | Asclepias nummularia Torr. | tufted milkweed | Asclepiadaceae |
| 7049 | ASNY | Asclepias nyctaginifolia Gray | Mojave milkweed | Asclepiadaceae |
| 7050 | ASOB | Asclepias obovata Ell. | pineland milkweed | Asclepiadaceae |
| 7051 | ASVIO | Asclepias viridiflora Raf. var. obovata (Ell.) Torr. | Asclepias obovata | Asclepiadaceae |
| 7052 | ASOE | Asclepias oenotheroides Cham. & Schlecht. | zizotes milkweed | Asclepiadaceae |
| 7053 | ASBR15 | Asclepias brevicornu Scheele | Asclepias oenotheroides | Asclepiadaceae |
| 7054 | ASOV | Asclepias ovalifolia Dcne. | oval-leaf milkweed | Asclepiadaceae |
| 7055 | ASPE8 | Asclepias pedicellata Walt. | savannah milkweed | Asclepiadaceae |
| 7056 | POPE17 | Podostigma pedicellata (Walt.) Vail | Asclepias pedicellata | Asclepiadaceae |
| 7057 | ASPE | Asclepias perennis Walt. | aquatic milkweed | Asclepiadaceae |
| 7058 | ASPH2 | Asclepias physocarpa (E. Mey.) Schlechter | balloonplant | Asclepiadaceae |
| 7059 | GOPH | Gomphocarpus physocarpus E. Mey. | Asclepias physocarpa | Asclepiadaceae |
| 7060 | ASPR9 | Asclepias prostrata Blackwell | prostrate milkweed | Asclepiadaceae |
| 7061 | ASPU | Asclepias pumila (Gray) Vail | plains milkweed | Asclepiadaceae |
