Stems: erect, not rooting at nodes; twigs gray-glaucous, round, smooth or slightly ridged, puberulent, spinescent.
Leaves: evergreen, alternate, not clustered; stipules thin, deciduous; petioles 4--12 mm; blades elliptic--round-ovate, 2.5--6.4 x 1.3--2.5 cm, bases rounded or subcordate, 3-veined, margins not revolute, entire, rarely +/- minutely serrate, tips obtuse, abaxially pale green, glabrous or puberulent, adaxially gray-green, glabrous to puberulent, plane.
Inflorescences: axillary, panicle-like, 3.0--6.0 cm.
Flowers: white.
Fruits: subglobose, +/- 5 mm broad, rough, horns 0; valve crest 0.
Cytology: n = 12 [M.A. Nobs in H. McMinn 1942]
Flowering: in spring.
Habitat: open, moist, flats, slopes; below 900 m
Range: Calif. [KR, NCoRO, SnFrB]. View Distribution Map.