Herbs, annual, 0.4–3 dm, canes­cent, hairs 0.6–1 mm. Cotyle­dons persistent, disclike, sessile. Stems erect or ascending, very short, tufted or spreading, branched. Leaves cauline, crowded near base; stipules well developed; petiole 2–9 cm; leaflets 7–11, blades 10–30 × 4–10 mm, adaxial surface glabrous. Peduncles 1–10 cm; bracts persistent, straight, 2–4 mm. Racemes several–many-flowered, 3–14 cm; flowers spirally arranged. Pedicels 1–4 mm. Flowers 4.5–7 mm; calyx 3–6 mm, lobes ± equal, abaxial lobe entire, adaxial lobe cleft; corolla dark blue-purple or whitish with blue tip, banner spot white becoming yellow, keel blunt, glabrous. Legumes undulate, 1.5–2 cm, not constricted between seeds, ciliate with long, dense hairs, sides with short, inflated hairs becoming scaly on drying. Seeds 2, wrinkled.

Phenology: Flowering spring (Apr–Jun).
Habitat: Dunes, sandy areas, washes, playas.
Elevation: 0–1500 m.

Distribution

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Ariz., Calif., Nev.

Discussion

Lupinus shockleyi occurs in the desert areas of southern California, adjacent areas of southern Nevada, and northwestern Arizona.

Selected References

None.

Lower Taxa

None.