Cardamine pachystigma (S. Watson) Rollins, Harvard Pap. Bot. 4: 45. 1993; Dentaria californica Nuttall var. pachystigma S. Watson, Proc. Amer. Acad. Arts 14: 289. 1879; Cardamine californica (Nuttall) Greene var. pachystigma (S. Watson) O. E. Schulz, Bot. Jahrb. Syst. 32: 388. 1903; D. pachystigma (S. Watson) S. Watson in A. Gray & S. Watson, Sy. Fl. N. Amer. 1(1): 155. 1895. TYPE:

Dentaria corymbosa Jepson, Man. Fl. Pl. Calif. 426. 1925, non Matsumura, .... 1899. TYPE:

Dentaria corymbosa var. grata Jepson, Fl. Calif. 2: 57. 1936. TYPE:

Herbs, perennial, glabrous. Rhizomes fleshy, ovoid to oblong, (3–)4–18 mm in diam., deeply underground; stolons absent. Stems 1–3 dm, erect, simple, glabrous. Rhizomal leaves simple, 1.2–2.3 cm; petiole 6.7–19.5 cm; blade orbicular to reniform or cordate to broadly ovate, 2.7–5.5 × 3–6.8 cm, base cordate to subtruncate, margin with obtuse teeth terminated in apiculae; cauline leaves 2–5, crowded above middle of stem, simple; petiole 0.3–2.6 cm, base not auriculate; blade similar in shape and margin to that of basal leaves, 1.8–5.5 × 1.2–4.7 cm, glabrous, base cuneate or obtuse to subcordate, marginal teeth apiculate. Racemes ebracteate; fruiting pedicels divaricate to ascending, 0.7–2.4 cm. Sepals oblong, 4–7 × 2–2.5 mm, erect, base of lateral pair saccate; petals pink or purple or rarely white, obovate to oblanceolate, 14–18 × 5–7 mm, claws to 9 mm, apex rounded; median filament pairs 7–8 mm, lateral pair 5.5–6.5 mm; anthers oblong, ca. 1.5 mm. Fruit linear, 3.2–5.4 cm × 2.2–4 mm; valves glabrous; style 4–7 mm; ovules and seeds 10–14 per fruit. Seeds brown, broadly ovate, 2–2.8 × 1.8–2.5 mm.

Flowring: Mar–May.

Habitat: forests, lava slides, talus and cliffs.

Elevation: 700–2900 m.

Distribution: United States (E and NC California/Plumas, Tehama, and Tulare counties).