Herbs, annual, 1.5–4 dm, pubescent. Cotyledons decid­uous, petiolate. Stems ascend­ing or erect, branched or unbranched. Leaves cauline; pet­iole 4–8 cm; leaflets usually 7, blades 20–25 × 2–5 mm, adaxial surface pubescent. Peduncles 3–12 cm; bracts deciduous, 6 mm. Racemes 4–15 cm; flowers usually whorled, sometimes spirally arranged. Pedicels 1–2.5 mm. Flow­ers 7–9 mm; calyx 4.5–6 mm, lobes ± equal, abaxial lobe entire, adaxial lobe cleft; corolla blue, banner spot white, becoming dark magenta, keel blunt, glabrous, banner length greater than width. Legumes ± fleshy, 3 × 0.6–0.9 cm, densely pubescent. Seeds usually 5.

Phenology: Flowering spring.
Habitat: Open or disturbed areas.
Elevation: 0–600 m.

Distribution

• Generated Map
• Legacy Map

Calif., Wash.

Discussion

In California, Lupinus pachylobus occurs from the foothills of the Cascade Range and Sierra Nevada to the outer North and South Coast ranges. In Washington, it is known from the San Juan Islands. It is uncommon and occurs and intergrades with L. bicolor.

Selected References

None.

Lower Taxa

None.