About Lupinus nanus Douglas ex Benth.
Nomenclature
Lupinus nanus Douglas ex Benth. is commonly known as sky lupine, field lupine, dwarf lupin, ocean-blue lupine, or Douglas' annual lupine.
Native Range
This lupine species is native to the western United States, specifically found growing natively in California, Nevada, and on Steens Mountain in eastern Oregon.
Habitat
It typically grows on slopes and in open or disturbed areas located below 1300 meters.
Growth Form and Size
As an annual plant, it reaches a height of 6 to 20 inches (15 to 51 cm) and produces blue flowers marked with white or yellow spots.
Bloom Period
It blooms during the months of March, April, and May.
Toxicity
The plant contains the alkaloid anagyrine, and is classified as toxic if eaten directly.
Chemical Constituents
Biologically active chemicals identified in Lupinus nanus include genistein, 2'-hydroxygenistein, luteone, and wighteone.
