| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ASVIL | Asclepias viridiflora Raf. var. lanceolata Torr. | Asclepias viridiflora | Asclepiadaceae
|
| ASVIL2 | Asclepias viridiflora Raf. var. linearis (Gray) Fern. | Asclepias viridiflora | Asclepiadaceae
|
| ASVIO | Asclepias viridiflora Raf. var. obovata (Ell.) Torr. | Asclepias obovata | Asclepiadaceae
|
| ASVI | Asclepias viridiflora Raf. | green comet milkweed | Asclepiadaceae
|
| ASVI2 | Asclepias viridis Walt. | green antelopehorn | Asclepiadaceae
|
| ASVI9 | Asclepias viridula Chapman | southern milkweed | Asclepiadaceae
|
| ASWE3 | Asclepias welshii N.& P. Holmgren | Welsh's milkweed | Asclepiadaceae
|
| ASCLE | Asclepias L. | milkweed | Asclepiadaceae
|
| ASFE6 | Asclepiodella feayi (Chapman ex Gray) Small | Asclepias feayi | Asclepiadaceae
|
| ASDE15 | Asclepiodora decumbens (Nutt.) Gray | Asclepias asperula ssp. capricornu | Asclepiadaceae
|
| ASVI11 | Asclepiodora viridis (Walt.) Gray | Asclepias viridis | Asclepiadaceae
|
| ASCR12 | Ascyrum crux-andreae L. | Hypericum crux-andreae | Clusiaceae
|
| ASCU14 | Ascyrum cuneifolium Chapman | Hypericum crux-andreae | Clusiaceae
|
| ASED | Ascyrum edisonianum Small | Hypericum edisonianum | Clusiaceae
|
| ASHYM | Ascyrum hypericoides L. var. multicaule (Michx. ex Willd.) Fern. | Hypericum hypericoides ssp. multicaule | Clusiaceae
|
| ASHYO | Ascyrum hypericoides L. var. oblongifolium (Spach) Fern. | Hypericum hypericoides ssp. hypericoides | Clusiaceae
|
| ASHY | Ascyrum hypericoides L. | Hypericum hypericoides ssp. hypericoides | Clusiaceae
|
| ASLI11 | Ascyrum linifolium Spach | Hypericum hypericoides ssp. hypericoides | Clusiaceae
|
| ASPU12 | Ascyrum pumilum Michx. | Hypericum suffruticosum | Clusiaceae
|
| ASST2 | Ascyrum stans Michx. ex Willd. | Hypericum crux-andreae | Clusiaceae
|
| ASTE13 | Ascyrum tetrapetalum (Lam.) Vail | Hypericum tetrapetalum | Clusiaceae
|
| ASCU13 | Asemeia cumulicola (Small) Small | Polygala grandiflora var. grandiflora | Polygalaceae
|
| ASGR14 | Asemeia grandiflora (Walt.) Small | Polygala grandiflora var. grandiflora | Polygalaceae
|
| ASLE20 | Asemeia leiodes (Blake) Small | Polygala grandiflora var. angustifolia | Polygalaceae
|
| ASMI15 | Asemeia miamiensis (Small ex Blake) Small | Polygala grandiflora var. angustifolia | Polygalaceae
|
| ASAN6 | Asimina angustifolia Raf. | slimleaf pawpaw | Annonaceae
|
| ASIN12 | Asimina incana (Bartr.) Exell | woolly pawpaw | Annonaceae
|
| ASLOS | Asimina longifolia Kral var. spatulata Kral | Asimina angustifolia | Annonaceae
|
| ASLO6 | Asimina longifolia Kral | Asimina angustifolia | Annonaceae
|
| ASNA3 | Asimina �nashii Kral | | Annonaceae
|
| ASOB6 | Asimina obovata (Willd.) Nash | bigflower pawpaw | Annonaceae
|
| ASPA18 | Asimina parviflora (Michx.) Dunal | smallflower pawpaw | Annonaceae
|
| ASPU14 | Asimina pulchella (Small) G.A. Zimmerman | Deeringothamnus pulchellus | Annonaceae
|
| ASPY2 | Asimina pygmea (Bartr.) Dunal | dwarf pawpaw | Annonaceae
|
| ASRE7 | Asimina reticulata Shuttlw. ex Chapman | netted pawpaw | Annonaceae
|
| ASRU11 | Asimina rugelii B.L. Robins. | Deeringothamnus rugelii | Annonaceae
|
| ASSP13 | Asimina speciosa Nash | Asimina incana | Annonaceae
|
| ASTE11 | Asimina tetramera Small | fourpetal pawpaw | Annonaceae
|
| ASTR | Asimina triloba (L.) Dunal | pawpaw | Annonaceae
|
| ASIMI | Asimina Adans. | pawpaw | Annonaceae
|
| ASEL7 | Askellia elegans (Hook.) W.A. Weber | Crepis elegans | Asteraceae
|
| ASNAR | Askellia nana (Richards.) W.A. Weber ssp. ramosa (Babcock) W.A. Weber | Crepis nana ssp. ramosa | Asteraceae
|
| ASNA5 | Askellia nana (Richards.) W.A. Weber | Crepis nana ssp. nana | Asteraceae
|
| ASCO39 | Aspalathus contaminatus of authors | Aspalathus linearis | Fabaceae
|
| ASLI14 | Aspalathus linearis (Burman f.) R. Dahlgren | rooibos | Fabaceae
|
| ASPAL2 | Aspalathus L. | aspalathus | Fabaceae
|
| ASEB3 | Aspalatus ebenus L. | Brya ebenus | Fabaceae
|
| ASBI5 | Aspalthium bituminosum (L.) Kuntze | Bituminaria bituminosa | Fabaceae
|
| ASAF | Asparagus africanus Lam. | African asparagus | Liliaceae
|
| ASAS4 | Asparagus asparagoides (L.) Druce | African asparagus fern | Liliaceae
|
| ASDE12 | Asparagus densiflorus (Kunth) Jessop | Sprenger's asparagus fern | Liliaceae
|
| ASOF | Asparagus officinalis L. | garden asparagus | Liliaceae
|
| ASPL5 | Asparagus plumosus Baker | Asparagus setaceus | Liliaceae
|
| ASSE12 | Asparagus setaceus (Kunth) Jessop | common asparagus fern | Liliaceae
|
| ASSP9 | Asparagus sprengeri Regel | Asparagus densiflorus | Liliaceae
|
| ASPAR | Asparagus L. | asparagus | Liliaceae
|
| ASPR | Asperugo procumbens L. | German-madwort | Boraginaceae
|
| ASPER | Asperugo L. | German-madwort | Boraginaceae
|
| ASAR2 | Asperula arvensis L. | blue woodruff | Rubiaceae
|
| ASGA5 | Asperula galioides Bieb. | Galium glaucum | Rubiaceae
|
| ASGL | Asperula glauca (L.) Bess. | Galium glaucum | Rubiaceae
|
| ASHU4 | Asperula humifusa (Bieb.) Bess. | Galium humifusum | Rubiaceae
|
| ASOD | Asperula odorata L. | Galium odoratum | Rubiaceae
|
| ASOR6 | Asperula orientalis Boiss. & Hohen. | oriental asperula | Rubiaceae
|
| ASTI4 | Asperula tinctoria L. | Galium tinctorium | Rubiaceae
|
| ASPER2 | Asperula L. | woodruff | Rubiaceae
|
| ASAL19 | Asphodelus albus Miller | rimmed lichen | Liliaceae
|
| ASFI2 | Asphodelus fistulosus L. | onionweed | Liliaceae
|
| ASSP17 | Asphodelus sphaerocarpus Gren. & Godron | Asphodelus albus | Liliaceae
|
| ASTE23 | Asphodelus tenuifolius Cav. | Asphodelus fistulosus | Liliaceae
|
| ASPHO | Asphodelus L. | asphodelus | Liliaceae
|
| ASHI3 | Aspicarpa hirtella L.C. Rich. | chaparral asphead | Malpighiaceae
|
| ASHU6 | Aspicarpa humilis (Benth.) Juss. | Aspicarpa longipes | Malpighiaceae
|
| ASHY4 | Aspicarpa hyssopifolia Gray | hyssopleaf asphead | Malpighiaceae
|
| ASLO7 | Aspicarpa longipes Gray | spreading asphead | Malpighiaceae
|
| ASPIC | Aspicarpa L.C. Rich. | asphead | Malpighiaceae
|
| ASAL13 | Aspicilia albomarginata de Lesd. | white rimmed lichen | Hymeneliaceae
|
| ASAL14 | Aspicilia albopruinosa (Looman) | rimmed lichen | Hymeneliaceae
|
| ASAL15 | Aspicilia alboradiata (H. Magn.) Oksner | rimmed lichen | Hymeneliaceae
|
| ASAL16 | Aspicilia aliena (Zahlbr.) Oksner | alien rimmed lichen | Hymeneliaceae
|
| ASAL17 | Aspicilia alphoplaca (Wahlenb.) Poelt & Lauckert | Lobothallia alphoplaca | Hymeneliaceae
|
| ASAM10 | Aspicilia americana de Lesd. | American aspicilia | Hymeneliaceae
|
| ASAN14 | Aspicilia annulata (Lynge) J. W. Thomson | rimmed lichen | Hymeneliaceae
|
| ASAN15 | Aspicilia anseris (Lynge) J. W. Thomson | rimmed lichen | Hymeneliaceae
|
| ASAQ60 | Aspicilia aquatica Korber | aquatic aspicilia | Hymeneliaceae
|
| ASAR14 | Aspicilia arctica (Lynge) Oksner | arctic aspicilia | Hymeneliaceae
|
| ASCA36 | Aspicilia caesiocinerea (Nyl. ex Malbr.) Arnold | rimmed lichen | Hymeneliaceae
|
| ASCA37 | Aspicilia caesiopruinosa (H. Magn.) J. W. Thomson | rimmed lichen | Hymeneliaceae
|
| ASCA38 | Aspicilia calcarea (L.) Mudd | calcareous rimmed lichen | Hymeneliaceae
|
| ASCA39 | Aspicilia candida (Anzi) Hue | rimmed lichen | Hymeneliaceae
|
| ASCI9 | Aspicilia cinerea (L.) Korber | rimmed lichen | Hymeneliaceae
|
| ASCI10 | Aspicilia cingulata (Zahlbr.) Oksner | rimmed lichen | Hymeneliaceae
|
| ASCO43 | Aspicilia composita (Lynge) J. W. Thomson | composite rimmed lichen | Hymeneliaceae
|
| ASCO44 | Aspicilia concinna (J. W. Thomson) | rimmed lichen | Hymeneliaceae
|
| ASCO45 | Aspicilia contigua (Lynge) J. W. Thomson | rimmed lichen | Hymeneliaceae
|
| ASCO46 | Aspicilia contorta (Hoffm.) Krempelh. | contorted rimmed lichen | Hymeneliaceae
|
| ASDE19 | Aspicilia desertorum (Krempelh.) Mereschk. | desert aspicilia | Hymeneliaceae
|
| ASDI11 | Aspicilia disserpens (Zahlbr.) Rasanen | rimmed lichen | Hymeneliaceae
|
| ASEL10 | Aspicilia elevata (Lynge) J. W. Thomson | rimmed lichen | Hymeneliaceae
|
| ASEX8 | Aspicilia excavata Thor & Timdal | Aspicilia moenium | Hymeneliaceae
|
| ASFI6 | Aspicilia fimbriata (H. Magn.) Clauzade & Rondon | rimmed lichen | Hymeneliaceae
|