Herbs, perennial, (5–)6–12 dm, woody, hairs stiff to short-silky-appressed. Cotyledons decid­uous, petiolate. Stems erect or ascending, clustered, un­branched or branched distally, stout. Leaves cauline; stipules 10–15 mm; petiole 2–25 cm; leaflets 8–11, blades (30–)60–120(–150) × 3–15 mm, abaxial surface silky, slightly less so abaxially. Peduncles 4–10 cm; bracts early deciduous to persistent, 10–18 mm. Racemes 12–40 cm, loose to dense; flowers whorled. Pedicels 4–12 mm. Flowers (13–)15–18 mm; calyx sometimes somewhat bulged and asymmetrical, abaxial lobe entire or notched, 7–8 mm, adaxial lobe shallowly notched, 6–7 mm; corolla bright yellow, rarely pale purple, keel falcate, banner glabrous or hairy abaxially, upper keel margins densely ciliate. Legumes 3–4.5 cm, tomentose. Seeds 4–7, pinkish brown to dull reddish brown, 6–7 mm.

Phenology: Flowering May–early Jun.
Habitat: Open ponderosa pine forests, dry hillsides, open woods.
Elevation: 500–1200 m.

Distribution

• Generated Map
• Legacy Map

Oreg., Wash.

Discussion

Lupinus sabineanus is known only from the Blue Mountains of northeastern Oregon and southeastern Washington (where it is of conservation concern).

Selected References

None.

Lower Taxa

None.