Astragalus racemosus var. racemosus |
|
---|---|
cream milkvetch |
|
Leaflets | (11–)17–31, blades 3–12 mm wide. |
Flowers | 16–19(–21) mm; corolla whitish, concolorous, or keel tip lilac, wings and banner sometimes lightly suffused with purple or purple-veined. |
Legumes | linear-oblong to narrowly oblong-ellipsoid, (15–)20–30 × 3–5.7 mm. |
2n | = 24. |
Astragalus racemosus var. racemosus |
|
Phenology | Flowering May–Jul. |
Habitat | Seleniferous bluffs, knolls, alluvial bottoms and roadsides on clay, shale, or gypsum. |
Elevation | 500–1400 m. (1600–4600 ft.) |
Distribution |
CO; KS; MN; MT; ND; NE; NM; OK; SD; TX; WY; SK; Mexico (San Luis Potosí) |
Discussion | T. Nuttall (1818) noted the disagreeable garlic odor associated with selenium in his description of Astragalus galegoides Nuttall (an illegitimate name pertaining to A. racemosus). The species often grows intermixed with A. bisulcatus; both are poisonous to livestock, producing so-called alkali disease or the blind-staggers. Variety racemosus does not occur west of the Continental Divide. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | |
Sibling taxa | |
Synonyms | A. racemosus var. longisetus |
Name authority | unknown |
Web links |