Herbs, annual, 1–6 dm, ascending- or appressed-villous. Cotyledons usually persistent, usually inconspicuous, petio­late. Stems ascending or erect, usu­ally branched, sometimes unbranched. Leaves cauline, often crowded near base; peti­ole 2–9 cm, ascending- or appressed-pubescent; leaflets (5 or)7, blades 10–20 × 5–10 mm, adaxial surface glabrate. Peduncles 5.5–10 cm; bracts deciduous, 4–5 mm. Racemes 18–45 cm; flowers well spaced, usually spirally arranged. Pedicels 5–7 mm. Flowers 10–13(–15) mm; calyx 6–7 mm, abaxial lobe entire, 6 mm, adaxial lobe 3-cleft, 4 mm; corolla bright violet-blue, banner spot creamy or yellow, keel glabrous. Legumes 3.5–5 cm, villous. Seeds 6–8. 2n = 36.

Phenology: Flowering late winter–early spring.
Habitat: Limestone or igneous basins, flats, drainages, gravelly, sandy or silty soils, creosote-lechuguilla shrublands, roadsides.
Elevation: 600–1400 m.

Distribution

• Generated Map
• Legacy Map

Tex., Mexico (Chihuahua).

Discussion

Lupinus havardii is known from the trans-Pecos region of Texas.

Selected References

None.

Lower Taxa

None.