Difference between revisions of "Lupinus latifolius var. subalpinus"
Bull. Torrey Bot. Club 51: 308. 1924.
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Latest revision as of 18:56, 12 March 2025
Herbs (1–)2–3(–6) dm, caudex branched at base. Stems hollow, soft-shaggy to glabrate (appearing whitish to reddish from hair). Flowers 12–18 mm.
Phenology: Flowering (Jun–)Jul–Aug.
Habitat: Volcanic sand, alpine or subalpine ridges and meadows.
Elevation: (500–)1000–2500 m.
Distribution
B.C., Oreg., Wash.
Discussion
Variety subalpinus is known from the Coast Mountains and Cascade Range in British Columbia southward through Washington to the volcanic cones of northern Oregon. It is also reported from western Yukon [Beamish et al. 681151 (UBC), Beamish et al. s.n. (UBC)] but the specimens have not been examined; it is absent from Haida Gwaii (Queen Charlotte Islands).
There is some evidence that var. subalpinus hybridizes with Lupinus nootkatensis (D. B. Dunn and J. M. Gillett 1966). Circumscription of var. subalpinus is not clear. It is sometimes placed as a variety of L. latifolius and sometimes as a variety of L. arcticus. Variety subalpinus can be differentiated from L. arcticus by the leaves being mostly cauline versus mostly basal.
Selected References
None.