Stems: erect, not rooting at nodes; twigs gray to brown, round, smooth, glabrous, rigid.
Leaves: evergreen, opposite; not clustered; stipules thickened, persistent; petioles 0--1 mm; blade cuneate-obovate to orbicular, 0.8--1.5 x 0.3--1.0 cm, bases cuneate, 1-veined, margins not revolute, with 4--8 +/- spine-like teeth, may be undulate, tips notched; abaxially gray, short-tomentose, adaxially shiny green, glabrous, plane.
Inflorescences: axillary, umbel-like, to 2.8 cm.
Flowers: blue to lavender.
Fruits: globose, 5 mm broad, smooth, horns slender, on shoulder; valve crests minute.
Cytology: 2 n = 24 (M.A. Nobs, 1963)
Flowering: in spring.
Habitat: chaparral on sandy, serpentinite or volcanic soils; under 800 m.
Range: Calif. [NCoRO (Mt.Hood Mt Range, Sonoma and Napa Cos.)] RARE View Distribution Map.
If you have any comments or information regarding this species, please send mail to Dr. Schmidt.