Cardamine constancei Detling, Madroño 3: 176. 1935. TYPE:

Herbs, perennial, glabrous or sparsely hirsute. Rhizomes slender, cylindrical, to 2 mm in diam.; stolons absent. Stems 1.5–5 dm, erect, simple, glabrous or sparsely hirsute near base. Rhizomal leaves absent; cauline leaves 4–7, crowded above middle of stem, simple, (5–)7–15(–20) cm; petiole (0.5–)1–4(–5) cm, base not auriculate; leaf blade broadly ovate or ovate-lanceolate to ovate-elliptic, rarely obovate, 5–13 × 2–6.5 cm, minutely pubescent along margin, base cuneate, margin coarsely serrate with small apiculae, or repand to undulate, apex acute. Racemes ebracteate; fruiting pedicels divaricate-ascending to suberect, 1–2.2 cm. Sepals oblong, 6–8 × 2–2.5 mm, erect, base of lateral pair slightly saccate; petals pink, oblanceolate, 15–28 × 5–8 mm, claws to 10 mm, apex rounded; median filament pairs 8–10 mm, lateral pair 4–6 mm; anthers linear, 2–3 mm. Fruit linear, 2.5–3.5(–5) cm × 1.9–2.1 mm; valves glabrous; style 2–3.5 mm; ovules and seeds 12–16 per fruit. Seeds brown, oblong, 2–2.5 × 1.2–1.5 mm.

Flowering: May–Jun.

Habitat: moist cliffs, wooded creek bottoms, shaded draws, hillsides, moist woods, mixed conifereous forests, granitic soils.

Elevation: 400–600 m.

Distribution: United States (N Idaho/Cleawater, Idaho, Kootenai, Nez Perce, and Shoshone counties).