Stems glabrous. Leaf blades 2.4-5.8 × 1.2-3.2 cm, base cordate or truncate, faces glabrous. Pedicels 0.6-1.4 mm, glabrous. Perianths 3-3.8 mm. Flowering Jun-Aug. Mountain slopes, talus slopes, edges of serpentine outcrops; 1000-2200 m; Calif., Wash.