Herbs perennial, 6-20(-30) cm tall, glabrous or sparsely pilose. Rhizomes much elongated, slender; bulbils few, spaced, rarely clustered. Stems simple, erect, straight, slender, sparsely pilose along proximal half, or glabrous. Rhizomal leaves simple or trifoliolate; petiole 0.7-4 cm; leaf blade or terminal leaflet suborbicular, broadly ovate, or cordate, 3-12 mm in diam., base cordate or rounded, margin entire or obscurely lobed. Cauline leaves 2-4, trifid or pinnatisect and with 2(or 3) lateral lobes on each side of midvein, lobes not decurrent; petiole 1-15(-28) mm, slender, wingless, glabrous, not auriculate at base; terminal lobe filiform to narrowly linear, 0.9-4.5 cm × 0.5-1.5(-2) mm, base attenuate, margin entire, scabrous with trichomes to 0.3 mm, apex acute. Racemes 3-10-flowered. Flowering pedicels ascending, to 1.2 cm, straight, glabrous. Sepals ovate, 2-1.5 × 1-1.5 mm, glabrous, margin and apex membranous, lateral pair subsaccate. Petals white or lavender, broadly obovate or spatulate, 5-7 × 2-3 mm, apex rounded. Median filament pairs 3-4, slightly flattened; lateral pair 1.5-2.5 mm; anthers oblong, 0.6-0.8 mm. Mature fruit and seeds not seen. Fl. May-Jul.
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