Lupinus polyphyllus

Erect perennial herb to 1.5 m tall; stems usually unbranched, minutely pubescent to glabrescent. Leaves palmately 9–17-foliolate; petioles to 25 cm long, sparsely appressed-pubescent; leaflets narrowly elliptic to oblanceolate, 3–15 cm long, 10–30 mm wide, upper surface usually glabrous, lower surface sparsely appressed-pubescent, apex obtuse to acute, usually mucronate; stipules subulate, 15–35 mm long. Inflorescences 15–60 cm long; peduncle up to 15 cm long, lower flowers alternate, upper flowers subverticillate; pedicles 5–14 mm long; bracteoles minute. Calyx 5–10 mm long, densely hairy, upper lip entire or shallowly 2-lobed, lower lip longer, entire; corolla 12–20 mm long, mostly blue, purple or pink, sometimes yellow or white. Pod 25–40 mm long, 6–12 mm wide, sessile, densely villous; seeds 5–10, ellipsoid, c. 4 mm long, brown, mottled. Flowers summer