| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ASALA10 | Astragalus allochrous Gray var. allochrous | halfmoon milkvetch | Fabaceae
|
| ASALP | Astragalus allochrous Gray var. playanus Isely | halfmoon milkvetch | Fabaceae
|
| ASAL6 | Astragalus allochrous Gray | halfmoon milkvetch | Fabaceae
|
| ASALA5 | Astragalus alpinus L. ssp. alaskanus Hult�n | Astragalus alpinus var. alpinus | Fabaceae
|
| ASALA9 | Astragalus alpinus L. ssp. arcticus Hult�n | Astragalus alpinus var. alpinus | Fabaceae
|
| ASALA6 | Astragalus alpinus L. var. alpiniformis (Rydb.) Rydb. ex M.E. Peck | Astragalus robbinsii var. alpiniformis | Fabaceae
|
| ASALA4 | Astragalus alpinus L. var. alpinus | alpine milkvetch | Fabaceae
|
| ASALB | Astragalus alpinus L. var. brunetianus Fern. | alpine milkvetch | Fabaceae
|
| ASALL | Astragalus alpinus L. var. labradoricus (DC.) Fern. | Astragalus alpinus var. brunetianus | Fabaceae
|
| ASAL7 | Astragalus alpinus L. | alpine milkvetch | Fabaceae
|
| ASAL8 | Astragalus altus Woot. & Standl. | tall milkvetch | Fabaceae
|
| ASAL9 | Astragalus alvordensis M.E. Jones | Alvord milkvetch | Fabaceae
|
| ASAM8 | Astragalus amblyodon (Rydb.) Hult�n | Astragalus polaris | Fabaceae
|
| ASAM2 | Astragalus amblytropis Barneby | Challis milkvetch | Fabaceae
|
| ASAM3 | Astragalus americanus (Hook.) M.E. Jones | American milkvetch | Fabaceae
|
| ASAM4 | Astragalus amnis-amissi Barneby ex C.L. Hitchc. | Custer milkvetch | Fabaceae
|
| ASAMA | Astragalus amphioxys Gray var. amphioxys | Crescent milkvetch | Fabaceae
|
| ASAMC | Astragalus amphioxys Gray var. cymbellus M.E. Jones | Astragalus cymboides | Fabaceae
|
| ASAMM3 | Astragalus amphioxys Gray var. melanocalyx (Rydb.) Tidestrom | Astragalus amphioxys var. amphioxys | Fabaceae
|
| ASAMM | Astragalus amphioxys Gray var. modestus Barneby | Crescent milkvetch | Fabaceae
|
| ASAMM2 | Astragalus amphioxys Gray var. musimonum (Barneby) Barneby | Crescent milkvetch | Fabaceae
|
| ASAMV | Astragalus amphioxys Gray var. vespertinus (Sheldon) M.E. Jones | Aladdin's slippers | Fabaceae
|
| ASAM5 | Astragalus amphioxys Gray | Crescent milkvetch | Fabaceae
|
| ASAM6 | Astragalus ampullarius S. Wats. | gumbo milkvetch | Fabaceae
|
| ASANS2 | Astragalus andersonii Gray var. sepultipes Barneby | Astragalus sepultipes | Fabaceae
|
| ASAN2 | Astragalus andersonii Gray | Anderson's milkvetch | Fabaceae
|
| ASAN4 | Astragalus anisus M.E. Jones | Gunnison milkvetch | Fabaceae
|
| ASAN7 | Astragalus anserinus Atwood, Goodrich & Welsh | Goose Creek milkvetch | Fabaceae
|
| ASAN8 | Astragalus antisellii Gray ex Brewer & S. Wats. | Astragalus trichopodus var. phoxus | Fabaceae
|
| ASAN18 | Astragalus anxius Meinke & Kaye | troubled milkvetch | Fabaceae
|
| ASAP | Astragalus applegatei M.E. Peck | Applegate's milkvetch | Fabaceae
|
| ASAQ2 | Astragalus aquilonius (Barneby) Barneby | Lemhi milkvetch | Fabaceae
|
| ASAR12 | Astragalus araneosus Sheldon | Astragalus lentiginosus var. diphysus | Fabaceae
|
| ASAR3 | Astragalus aretioides (M.E. Jones) Barneby | cushion milkvetch | Fabaceae
|
| ASARA | Astragalus argophyllus Nutt. var. argophyllus | silverleaf milkvetch | Fabaceae
|
| ASARM | Astragalus argophyllus Nutt. var. martinii M.E. Jones | silverleaf milkvetch | Fabaceae
|
| ASARP | Astragalus argophyllus Nutt. var. panguicensis (M.E. Jones) M.E. Jones | silverleaf milkvetch | Fabaceae
|
| ASARP2 | Astragalus argophyllus Nutt. var. pephragmenoides Barneby | Astragalus argophyllus var. martinii | Fabaceae
|
| ASARS | Astragalus argophyllus Nutt. var. stocksii Barneby ex Isely | silverleaf milkvetch | Fabaceae
|
| ASAR4 | Astragalus argophyllus Nutt. | silverleaf milkvetch | Fabaceae
|
| ASAR5 | Astragalus aridus Gray | annual desert milkvetch | Fabaceae
|
| ASAR6 | Astragalus arizonicus Gray | Arizona milkvetch | Fabaceae
|
| ASARK | Astragalus arrectus Gray var. kelseyi (Rydb.) M.E. Jones | Astragalus atropubescens | Fabaceae
|
| ASARL | Astragalus arrectus Gray var. leibergii (M.E. Jones) M.E. Jones | Astragalus leibergii | Fabaceae
|
| ASARP3 | Astragalus arrectus Gray var. pephragmenus (M.E. Jones) M.E. Jones | Astragalus tephrodes var. brachylobus | Fabaceae
|
| ASAR7 | Astragalus arrectus Gray | Palouse milkvetch | Fabaceae
|
| ASAR11 | Astragalus arthu-schottii Gray | Astragalus lentiginosus var. borreganus | Fabaceae
|
| ASAR8 | Astragalus arthurii M.E. Jones | waha milkvetch | Fabaceae
|
| ASAS2 | Astragalus asclepiadoides M.E. Jones | milkweed milkvetch | Fabaceae
|
| ASAS7 | Astragalus astragalinus (Hook.) A.& D. L�ve | Astragalus alpinus var. alpinus | Fabaceae
|
| ASAS3 | Astragalus asymmetricus Sheldon | San Joaquin milkvetch | Fabaceae
|
| ASATA | Astragalus atratus S. Wats. var. atratus | mourning milkvetch | Fabaceae
|
| ASATI | Astragalus atratus S. Wats. var. inseptus Barneby | Fairfield milkvetch | Fabaceae
|
| ASATM | Astragalus atratus S. Wats. var. mensanus M.E. Jones | mourning milkvetch | Fabaceae
|
| ASATO | Astragalus atratus S. Wats. var. owyheensis (A. Nels. & J.F. Macbr.) M.E. Jones | Owyhee milkvetch | Fabaceae
|
| ASAT | Astragalus atratus S. Wats. | mourning milkvetch | Fabaceae
|
| ASAT2 | Astragalus atropubescens Coult. & Fisher | hangingpod milkvetch | Fabaceae
|
| ASAT4 | Astragalus atwoodii Welsh & Thorne | Astragalus pinonis var. atwoodii | Fabaceae
|
| ASAU | Astragalus austiniae Gray ex Brewer & S. Wats. | Austin's milkvetch | Fabaceae
|
| ASAUG | Astragalus australis (L.) Lam. var. glabriusculus (Hook.) Isely | Astragalus australis | Fabaceae
|
| ASAUM | Astragalus australis (L.) Lam. var. major (Gray) Isely | Astragalus australis | Fabaceae
|
| ASAUO | Astragalus australis (L.) Lam. var. olympicus Isely | Astragalus cottonii | Fabaceae
|
| ASAU4 | Astragalus australis (L.) Lam. | Indian milkvetch | Fabaceae
|
| ASAU6 | Astragalus austrinus (Small) E.D. Schulz | Astragalus nuttallianus var. austrinus | Fabaceae
|
| ASBA3 | Astragalus barnebyi Welsh & Atwood | Astragalus desperatus var. conspectus | Fabaceae
|
| ASBA | Astragalus barrii Barneby | Barr's milkvetch | Fabaceae
|
| ASBE2 | Astragalus beathii C.L. Porter | Beath's milkvetch | Fabaceae
|
| ASBE5 | Astragalus beatleyae Barneby | Beatley's milkvetch | Fabaceae
|
| ASBEB | Astragalus beckwithii Torr. & Gray var. beckwithii | Beckwith's milkvetch | Fabaceae
|
| ASBEP | Astragalus beckwithii Torr. & Gray var. purpureus M.E. Jones | Beckwith's milkvetch | Fabaceae
|
| ASBES | Astragalus beckwithii Torr. & Gray var. sulcatus Barneby | Beckwith's milkvetch | Fabaceae
|
| ASBEW | Astragalus beckwithii Torr. & Gray var. weiserensis M.E. Jones | Weiser's milkvetch | Fabaceae
|
| ASBE3 | Astragalus beckwithii Torr. & Gray | Beckwith's milkvetch | Fabaceae
|
| ASBE4 | Astragalus bernardinus M.E. Jones | San Bernardino milkvetch | Fabaceae
|
| ASBI6 | Astragalus bibullatus Barneby & Bridges | limestone glade milkvetch | Fabaceae
|
| ASBI | Astragalus bicristatus Gray | twocrested milkvetch | Fabaceae
|
| ASBIM2 | Astragalus bigelovii Gray var. marcidus (Greene ex Rydb.) Isely | Astragalus mollissimus var. marcidus | Fabaceae
|
| ASBIM3 | Astragalus bigelovii Gray var. mogollonicus (Greene) Barneby | Astragalus mollissimus var. mogollonicus | Fabaceae
|
| ASBIT2 | Astragalus bigelovii Gray var. thompsoniae (S. Wats.) M.E. Jones | Astragalus mollissimus var. thompsoniae | Fabaceae
|
| ASBIT | Astragalus bigelovii Gray var. typicus Barneby | Astragalus mollissimus var. bigelovii | Fabaceae
|
| ASBI8 | Astragalus bigelovii Gray | Astragalus mollissimus var. bigelovii | Fabaceae
|
| ASBIH2 | Astragalus bisulcatus (Hook.) Gray ssp. haydenianus (Gray) W.A. Weber | Astragalus bisulcatus var. haydenianus | Fabaceae
|
| ASBIB | Astragalus bisulcatus (Hook.) Gray var. bisulcatus | twogrooved milkvetch | Fabaceae
|
| ASBIH | Astragalus bisulcatus (Hook.) Gray var. haydenianus (Gray) Barneby | Hayden's milkvetch | Fabaceae
|
| ASBIM | Astragalus bisulcatus (Hook.) Gray var. major (M.E. Jones) Welsh | twogrooved milkvetch | Fabaceae
|
| ASBIN | Astragalus bisulcatus (Hook.) Gray var. nevadensis (M.E. Jones) Barneby | Nevada milkvetch | Fabaceae
|
| ASBI2 | Astragalus bisulcatus (Hook.) Gray | twogrooved milkvetch | Fabaceae
|
| ASBL4 | Astragalus blakei Egglest. | Astragalus robbinsii var. minor | Fabaceae
|
| ASBL3 | Astragalus blyae (Rose ex Rydb.) Tidestrom | Astragalus newberryi var. blyae | Fabaceae
|
| ASBOY | Astragalus bodinii Sheldon var. yukonis (M.E. Jones) Boivin | Astragalus bodinii | Fabaceae
|
| ASBO | Astragalus bodinii Sheldon | Bodin's milkvetch | Fabaceae
|
| ASBO2 | Astragalus bolanderi Gray | Bolander's milkvetch | Fabaceae
|
| ASBO3 | Astragalus bourgovii Gray | Bourgov's milkvetch | Fabaceae
|
| ASBR5 | Astragalus brandegeei Porter | Brandegee's milkvetch | Fabaceae
|
| ASBR6 | Astragalus brauntonii Parish | Braunton's milkvetch | Fabaceae
|
| ASBR7 | Astragalus brazoensis Buckl. | Brazos milkvetch | Fabaceae
|
| ASBR13 | Astragalus brevidens (Gandog.) Rydb. | Astragalus canadensis var. brevidens | Fabaceae
|
| ASBR8 | Astragalus breweri Gray | Brewer's milkvetch | Fabaceae
|
| ASBR14 | Astragalus bruceae (M.E. Jones) Abrams | Astragalus pauperculus | Fabaceae
|
| ASBR9 | Astragalus bryantii Barneby | Astragalus lentiginosus var. palans | Fabaceae
|
| ASCA13 | Astragalus caespitosus (Nutt.) Gray | Astragalus spatulatus | Fabaceae
|