Young twigs, peduncles, and leaves glabrous. 2n = 18.

Phenology: Flowering Mar–May.
Habitat: Rocky or sandy soils, ravines, washes, slopes, rock outcrops, canyon walls, cliff faces, usually with other shrubs, especially Ambrosia, Yucca, Ephedra, Atriplex
Elevation: (100–)500–1100 m

Distribution

• Generated Map
• Legacy Map

Calif., Nev.

Discussion

Occasional, sparsely hirtellous plants may reflect genetic influence of var. spinosus.

Selected References

None.

Lower Taxa

None.