Plants 3-25 cm; herbage glabrous or sparsely to densely hairy. Stems erect to ascending or decumbent. Leaves 1-8 cm; leaflets 5-11, blade linear to ovate-elliptic, margins entire, irregularly toothed, or lobed. Flowers urn-, cup-, or bell-shaped; sepals accrescent or not, ovate, obovate, lanceolate, oblong-lanceolate, or lanceolate-ovate, 4-10 mm; petals white, obovate, oblong, or obovate-cuneate, 4.5-10 mm, 1.6-1.8 times as long as wide, 0.5-1.1 times longer than sepals, apex retuse, obtuse, erose, truncate, or emarginate; filaments 2-7 mm; anthers (yellow) 0.4-1.5 mm; style 1.5-4 mm. Nutlets dark brown or gray, 3-4.5 mm, tuberculate, tubercles straw-colored, platelike, conic, or awl-shaped.