Lupinus rivularis is a species of lupine known by the common name riverbank lupine. It is native to western North America from southern British Columbia to northern California, where it is known mainly from coastal habitat in such places as both Olympic and Redwood National Parks, and at Point Reyes National Seashore. Inflorescence is a large open spike with flowers in whorls. The pea like flowers in streambank lupine are two toned, ranging from purple to creamy white and blooming between May and September. The fruit is a somewhat hairy pod that turns dark as it ages.
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