Lupinus argenteus var. holosericeus
Lupinus argenteus var. argentatus
holo lupine, little-flower lupine, silky lupine
branched or unbranched.
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 densely silky.
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.
5–9 mm;
calyx bulge 0–1 mm;
corolla purplish blue, wings 5–7.5 mm, banner densely hairy abaxially, to middle or distally.
(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. holosericeus
Lupinus argenteus var. argentatus
Variety holosericeus is known from the Ruby Mountains of northeastern Nevada through the middle and lower Snake River plains and Owyhee Desert in southern Idaho and adjacent Oregon, northern Nevada, western Colorado, and northeastern Utah.
This variety is close to var. utahensis, but the flowers are smaller, and the calyx is not spurred.
(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.)
OR
CalFlora
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
