| Fabaceae | |
Vicia americana subsp. americana
| | | |
| Fabaceae | |
Vicia americana var. americana
| | | |
| Fabaceae | |
Vicia americana fo. angusta
| Hoover | Leafl. W. Bot. 10(16): 349 | 1966 |
| Fabaceae | |
Vicia americana var. angustifolia
| Nees | Reise Nord-America 2: 434 | 1841 |
| Fabaceae | |
Vicia americana var. bungei
| Stank. | | |
| Fabaceae | |
Vicia americana var. lathyroides
| S.L. Welsh & N.D. Atwood | Utah Fl. (ed. 4) 489 | 2008 |
| Fabaceae | |
Vicia americana var. linearis
| (Nutt.) S. Watson | Bot. California 1: 158 | 1876 |
| Fabaceae | |
Vicia americana subsp. mexicana
| C.R. Gunn | U. S. D. A. Tech. Bull. 1601: 26 | 1979 |
| Fabaceae | |
Vicia americana subsp. minor
| (Hook.) Piper & Beattie | Fl. N.W. Coast 223 | 1915 |
| Fabaceae | ** |
Vicia americana subsp. minor
| (Hook.) Á. Löve & D. Löve | Taxon 31(2): 347 | 1982 |
| Fabaceae | |
Vicia americana var. minor
| Hook. | Fl. Bor.-Amer. 1(3): 157 | 1831 |
| Fabaceae | |
Vicia americana fo. oblonga
| Hoover | Leafl. W. Bot. 10(16): 349 | 1966 |
| Fabaceae | |
Vicia americana subsp. oregana
| (Nutt.) Abrams | Ill. Fl. Pacific States 2: 617 | 1944 |
| Fabaceae | |
Vicia americana var. oregana
| (Nutt.) A. Nelson | New Man. Bot. Rocky Mt. 301 | 1909 |
| Fabaceae | |
Vicia americana var. pallida
| Suksd. | Deutsche Bot. Monatsschr. 18(2): 26 | 1900 |
| Fabaceae | |
Vicia americana var. pubens
| | | |
| Fabaceae | |
Vicia americana var. sinensis
| C.R. Gunn | Iowa State J. Sci. 42(3): 211 | 1968 |
| Fabaceae | |
Vicia americana subsp. truncata
| (Nutt.) Á. Löve & D. Löve | Taxon 31(2): 347–348 | 1982 |
| Fabaceae | |
Vicia americana var. truncata
| (Nutt.) W.H. Brewer ex S. Watson | Bot. California 1: 158 | 1876 |
| Fabaceae | |
Vicia americana var. villosa
| (Kellogg) F.J. Herm. | Agric. Handb. 168: 83 | 1960 |