Cardamine trifida (Lam. ex Poir.) B. M. G. Jones

Herbs perennial, (7-)12-30 cm tall. Rhizomes short, with many, slender petioles 0.5-10 cm that terminate into tubers; tubers fleshy, whitish, representing modified leaf blades, globose, ovoid, or subreniform, to 7 mm, sometimes slightly flattened and 3-7-toothed. Stems erect, simple, glabrous. Rhizomal leaves ternate, biternate, or palmately 5-foliolate; petiole 3-15 cm; terminal leaflet lanceolate, broadly ovate, or suborbicular in outline, to 2 × 1.3 cm, with a petiolule to 6 mm, base cuneate, margin crenate or dissected into 3 sublanceolate or ovate lobes, base cuneate or subcordate. Cauline leaves 1-3, sometimes 2 and subopposite, often restricted to distal 1/3 of stem, minutely scabrid at least along margin with trichomes to 0.1 mm, rarely also pilose with trichomes to 0.4 mm; petiole 0.4-2 cm; terminal leaflet linear or narrowly lanceolate, 0.5-5 cm × 1-6 mm, base cuneate or attenuate, margin entire or 3-toothed or -lobed, apex acute and mucronate; lateral leaflets 1 or 2 pairs, similar to terminal one or entire. Racemes 5-20-flowered. Fruiting pedicels ascending, 0.7-1.3 cm. Sepals oblong, 3.5-5 × 1.5-2 mm, glabrous. Petals purple or pink, rarely white, obovate or spatulate, 8-11(-14) × 3.5-5 mm, apex rounded. Median filament pairs 4-6 mm, slender; lateral pair 3.5-4.5 mm; anthers narrowly oblong 1.1-1.5 mm. Ovules 10-16 per ovary. Fruit linear, 2-3.5 cm × 1.2-1.6 mm; valves glabrous; style 1.5-4 mm. Seeds brown, oblong, 1-1.3 × 0.8-1 mm. Fl. May-Jun, fr. Jun-Jul. 2n = 32, 48.

Moist meadows or slopes, shady places, forests, among shrubs. Heilongjiang, Jilin, Nei Mongol [Japan, Kazakhstan, Korea, Mongolia, Russia (Far East, Siberia)].

Dentaria trifida Lamarck ex Poiret, Encycl. Suppl. 2: 465. 1812; Cardamine schulziana Baehni; C. tenuifolia (Ledebour) Turczaninow (1842), not Hooker (1834); D. alaunica Golitsin; D. tenuifolia Ledebour; Sphaerotorrhiza trifida (Lamarck ex Poiret) Khokhrjakov.

Cardamine trifida là một loài thực vật có hoa trong họ Cải. Loài này được (Lam. ex Poir.) B.M.G.Jones mô tả khoa học đầu tiên năm 1964.