Lupinus argenteus var. hillii
Lupinus argenteus var. argophyllus
branched.
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.
cauline;
petiole of proximal cauline leaves 1.5–3 cm;
leaflet blade surfaces silvery-pubescent.
(1–)2–5(–6) mm.
2–4 mm in flower, to 8 mm in fruit.
6–8 mm;
calyx bulge 0–1 mm;
corolla blue-purple, wings 5.5–7 mm, banner equaling wings, usually thinly strigulose abaxially.
8–12 mm, in profile appearing closed;
calyx spur 1–3 mm (less pronounced);
corolla light blue, banner usually hairy abaxially.
= 48.
= 48.
Lupinus argenteus var. hillii
Lupinus argenteus var. argophyllus
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 argophyllus is known from the foothills of the Rocky Mountains from Montana and South Dakota southward to northern Arizona, New Mexico, and the San Juan Basin in southwestern Colorado, and eastward into Nebraska, Oklahoma, Texas, and Wyoming.
Variety argophyllus can be separated by the spurred calyx, flowers in profile appearing closed or shallowly gaping, and petioles of the lowest or largest cauline leaves 1.5–3 cm.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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