矮毛茛 ai mao gen

Herbs perennial. Roots fibrous, thickened above. Stems 0.8--5 cm, glabrous or sparsely puberulent at nodes, simple or branched. Basal leaves 3--5; petiole 0.8--3 cm, glabrous or sparsely puberulent; blade usually 3-partite or 3-sect, occasionally 3-lobed or undivided, pentagonal or broadly ovate in outline, 2--6 × 3--8 mm, papery, glabrous or adaxially sparsely puberulent, base cordate, sometimes rounded-truncate; central segment obovate or rhombic, obtuse at apex, entire or 3-dentate; lateral segments obliquely flabellate or obliquely obovate, unequally 2-partite or 2-lobed, lobes entire or 2-lobed again. Stem leaves 1 or 2, similar to basal ones, short petiolate or sessile. Flowers solitary, terminal, 0.4--0.6 cm in diam. Receptacle glabrous. Sepals 5, elliptic, 2--2.5 mm, subglabrous or abaxially sparsely puberulent. Petals 5, narrowly obovate or subelliptic, 2--2.5 × 1.2--2 mm, nectary pit without a scale, apex rounded. Stamens 8--16; anthers long ellipsoid. Aggregate fruit ovoid, ca. 4 × 2.5 mm. Achene obliquely ellipsoid or obliquely obovoid, ca. 1 × 1 mm, glabrous; style persistent, ca. 0.3 mm. Fl. Jun--Sep.

Meadows, gravelly slopes, by lakes; 3000--4000 m. SE Xizang (Mêdog Xian), NW Yunnan [Nepal].