Astragalus sect. Genistoidei
few or several to many.
odd-pinnate, petiolate to short-petiolate;
leaflets (1 or)3–21, or reduced to phyllodium, sometimes terminal leaflet decurrent and not jointed to rachis.
loosely flowered, flowers often ascending then declined.
whitish, ochroleucous, lilac, or purple to pink-purple, banner recurved through 40–90°, keel apex obtuse, broadly triangular, or acute-triangular and beaklike.
tubes campanulate.
persistent, sessile or substipitate, declined-pendulous, spreading, or ascending, linear to linear-ellipsoid, oblanceoloid, or narrowly oblong, laterally compressed and 2-sided, unilocular.
6–26.
basifixed or malpighian.
connate or distinct at distal nodes.
Astragalus sect. Genistoidei
Species 3 (3 in the flora).
Section Genistoidei consists of three species that are widespread through the Rocky Mountains and intermontane United States, from British Columbia and Alberta southward to Washington, Arizona, and South Dakota.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
