Sedum trullipetalum Hook. & Thoms.

Annual herb. Small tap root. Stems 5-11 cm high, suberect-decumbent, glabrous, branched. Leaves sessile, lanceolate or lanceolate-linear, acute, entire, imbricate, glabrous, 4-6 x 1-2 mm. Inflorescence terminal, corymbose cyme. Flowers pentamerous, pedicel 3-6 mm. Sepals free, 0.7-3 x 0.5-1 mm, elliptic, acute, glabrous. Petals 4-10 x 0.9-2 mm, ovate, with a narrow basal appendage, acute, yellow, glabrous. Stamens 10, in two whorls, 3.5-9 mm long. Nectar scales spathulate, 0.6-1 x 0.1-0.2 mm. Carpels 5, connate at the base, 3-4 x 0.5-1 mm, style short, stigma indistinct. Follicles 5, 5-6 x 0.6-1 mm. Seeds 22-25 per fruit, small, brown, 0.8-1 x 0.15-0.2 mm.

Herbs perennial, glabrous. Sterile stems densely tufted, 1-4 mm. Flowering stems simple or branched from base, 2.8-8 cm. Leaf blade suboblong to narrowly triangular, 3-10 mm, base broad, 3-lobed spurred or spurless, apex acuminate. Cyme corymbiform, dense. Flowers subsessile, unequally 5-merous. Sepals suboblong to narrowly ovate, 4-6.5 mm, base spurless, apex acuminate. Petals free, yellow, trullate, 6-10 mm, base narrowly clawed, limb broadly ovate to ovate-lanceolate, apex mucronate. Stamens 10; antesepalous ones 4.5-5.5 mm; antepetalous ones inserted on petal claw, shorter than petal limb. Nectar scales oblong, apex emarginate. Carpels erect, linear, 5-9 mm, base connate for ca. 2.5 mm; ovules many. Styles long. Seeds oblong, ca. 0.6 mm, minutely mammillate. Fl. Aug-Oct, fr. Oct-Nov.

Himalaya (Garhwal to Bhutan), S. Tibet, Assam, Burma, W. China (Yunnan).

Distribution: Kashmir, India, Nepal, Bhutan, Sikkim and China (W.Sichuan, N.E.Xizang).

W Sichuan, NE and S Xizang, NW Yunnan [Nepal, Sikkim].

3600-4700 m

Fl. Per.: August-September.

Grows from 3000-3692 m in crevices and grasslands.

Grassy meadows on alpine summits, grasslands, rocks, rock crevices, dry places; 2700-4400 m.