西藏银莲花 xi zang yin lian hua

Rhizome branched, ascending, short, ca. 10 mm in diam. Leaves 5--12; petiole 4--15 cm, sparsely spreading pubescent, base sheathing; leaf blade 3-parted, cordate-pentagonal, 2.5--6 × 3--8 cm, densely puberulent, base subcordate, margin denticulate, apex acute; central segment 3-lobed, rhombic-elliptic; lateral segments unequally 2-lobed, obliquely obovate, slightly smaller than central one. Scapes 4 or 5, ca. 40 cm, spreading puberulent; cyme 2- or 3-flowered. Involucral bracts 3, sessile; bract blade 3-lobed, ovate, 2--3.5 cm, densely puberulent. Sepals 5, white, ovate, 18--20 × 10--20 mm, abaxially densely sericeous, basal veins 5--7, vein anastomoses 1 or 2. Stamens 4--5 mm; filament filiform; anther ellipsoid, ca. 1.5 mm. Pistils ca. 50; ovary densely pubescent; style subulate, ca. 1 mm. Fl. Aug.

* Streamsides in valleys; ca. 3100 m. SE Xizang (Lang Xian).