Lupinus argenteus var. hillii
Lupinus argenteus var. argentatus
branched.
normally branched.
usually cauline, basal leaves usually absent at flowering, if present then petioles less than 3 times as long as leaflets;
leaflet blades narrow and folded, oblanceolate or elliptic-oblanceolate, surfaces gray or silvery-pubescent.
mostly cauline, basal usually absent at flowering;
leaflet blades flat, oblanceolate, surfaces glabrous or adaxially pubescent.
several.
(1–)2–5(–6) mm.
3–4 mm.
6–8 mm;
calyx bulge 0–1 mm;
corolla blue-purple, wings 5.5–7 mm, banner equaling wings, usually thinly strigulose abaxially.
(7.5–)8–10 mm;
calyx often distinctly gibbous abaxially at base;
corolla blue, large, wings (7.5–)8–10 mm, banner spot blue or yellow, banner usually hairy abaxially.
= 48.
= 48.
Lupinus argenteus var. hillii
Lupinus argenteus var. argentatus
Variety hillii is the small-flowered form that occurs in the Southwest in which the flowers are budlike and scarcely gaping.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Variety argentatus is known from the Rocky Mountains in Colorado to Idaho, Montana, and Wyoming, southward to Arizona and New Mexico, and in the Wasatch and Utah plateaus, from Salt Lake to eastern Iron County, Utah. In Arizona, it is apparently restricted to the Kaibab Plateau, where it is rare.
Variety argentatus can be separated from the other varieties by the absence of a spur and its abaxially gibbous calyx. The herbs are mesomorphic plants of cool, moist or wet mountain meadows, the leaflets are green, flowers are relatively large, wings are 7.5–10 mm, and the stems are branched.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CalFlora
WildflowerSearch
iNaturalist
USDA Plants Database
PNW Herbaria
