Herbs, annual, usually less than 1 dm, pubescent, hairs more than 1 mm. Cotyledons persis­tent, disclike, sessile. Stems very short, tufted, branched. Leaves cauline, crowded near base; stipules well developed; petiole 1–6 cm; leaflets (3 or)5–9, blades 8–20 × 2–9 mm, adaxial surface glabrous. Peduncles 1–8(–10) cm; bracts per­sistent, straight, 2–3 mm. Racemes dense, 3–16-flowered, 1–8 cm; flowers spirally arranged, crowded. Pedicels 0.3–1.5 mm. Flowers 6–8 mm; calyx abaxial lobe entire or shallowly cleft, ± 6 mm, adaxial lobe 2-toothed, 3 mm, less than 1/2 as long as abaxial; corolla bright blue, banner spot white or yellow, keel glabrous. Legumes not undulate, 1 cm, thinly pilose to coarsely hirsute. Seeds 1 or 2, smooth.

Phenology: Flowering spring.
Habitat: Sandy washes, open areas, grasslands, pinyon pine-juniper forests, creosote bush scrub, mesquite.
Elevation: 300–2400 m.

Distribution

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Ariz., Calif., Colo., Nev., N.Mex., Oreg., Utah, Wyo., Mexico (Chihuahua, Sonora).

Discussion

Lupinus brevicaulis resembles L. flavoculatus except that its flowers are smaller.

Selected References

None.

Lower Taxa

None.