Lupinus argenteus var. holosericeus
Lupinus argenteus var. palmeri
holo lupine, little-flower lupine, silky lupine
Palmer's silver lupine
branched or unbranched.
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.
cauline;
petiole 4–10 cm;
leaflet blades narrow and folded, oblanceolate or elliptic-oblanceolate, surfaces densely gray spreading-hairy and silvery-silky.
(1–)2–5(–6) mm.
2–7 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.
8–10(–12) mm;
calyx bulge or spur less than 1 mm;
corolla blue, banner hairy abaxially.
= 48.
= 48.
Lupinus argenteus var. holosericeus
Lupinus argenteus var. palmeri
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 palmeri is widespread over central and northwestern Arizona and adjacent New Mexico, and through high elevations in California, Nevada, Utah, and Washington.
It is similar to variety argenteus except stem pubescence is of mixed long-spreading and short hairs.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
OR
CalFlora
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
