Lupinus albifrons var. collinus
Fl. Francisc., 46. 1891.
Endemic
Synonyms: Lupinus albifrons var. flumineus C. P. Smith L. collinus (Greene) A. Heller L. isabelianus Eastwood
Treatment appears in FNA Volume 11.
Subshrubs, 2–4 dm, appressed-silvery. Leaves clustered near base, appressed-silvery; petiole 3–8 cm. Inflorescence bracts 7–9 mm. Racemes 4–14 cm. Flowers 10–15 mm.
Phenology: Flowering Mar–Jun.
Habitat: Cliffs, openings in forests.
Elevation: 0–2000 m.
Distribution
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Calif., Oreg.
Discussion
Variety collinus is known from the northern part of the Sierra Nevada Foothills and extends into adjacent southern Oregon and the North and South Coast ranges of California.
Variety collinus is one of the host plants for the endangered Mission Blue butterfly.
Selected References
None.
Lower Taxa
None.