Rhodiola wallichiana (Hook.) Fu

Perenial monoecious herb. Rhizome cylindrical, 4-20 cm long, 1.5-3 cm thick with scaly radical leaves on the apical part. Flowering stem 5-12 in each rosette, deciduous, simple, erect, glabrous, 13-30 cm high, 3-6 mm wide at anthesis. Cauline leaves remotely or irregularly crenulate in the upper half, but nearly entire in the lower half, obtuse, glabrous, linear to narrowly ovate, 7.5-30 x 1-6 mm. Inflorescence terminal, compact corymb, bracteate. Bract similar to the cauline leaves. Flowers bisexual, usually 5-merous, rarely 4 or 6-merous, hypogynous, pedicel 1-5 mm long. Calyx 4.5-8.5 x 1-1.7 mm, lobes basally connate, glabrous, entire, round, narrowly triangular to subulate. Petals glabrous, entire, obtuse, elliptic, boat-shaped, 5.5-11 x 1.5-2.5 mm. Stamens 8-12, slightly shorter or longer than the petals, in two whorls, basifixed, epipetalous 7-8 mm long, alternipetalous 7.5-12 mm long. Carpel 7-14 x 1-2 mm, style straight, 2-4 mm long, ovary 5-10 x 1-2 mm, ovules 26-36 per locule. Nectar scale oblong to broadly oblong, 0.8-1.2 x 0.6-0.8 mm. Follicles 7-14 x 1.5-2 mm. Seeds 26-36 per fruit, ellipsoidal, 1-2 x 0.3-0.7 mm.

Caudex prostrate, slender, ca. 1 cm in diam.; persistent old flowering stems absent. Flowering stems 3-5, 17-40 cm. Stem leaves numerous, sessile, lanceolate to linear-oblanceolate, 1.2-3 × 0.2-0.3 cm, attenuate on both ends, margin apically 1-3-serrate. Inflorescences terminal, corymbiform, 1.5-2.5 cm in diam., bracteate. Flowers bisexual, rarely unisexual, unequally 5-merous. Sepals linear, 3-8 mm, apex obtuse. Petals reddish, greenish, green, or yellowish white, linear-oblanceolate or obovate-elliptic, 5-10 × ca. 2 mm, apex obtuse. Stamens 10, 0.8-1.2 cm. Nectar scales subspatulate-quadrangular or subquadrangular, apex slightly dilated, emarginate. Carpels erect, ovoid. Follicles lanceolate, 1-1.5 cm, base narrow. Seeds winged. Fl. Aug-Sep, fr. Oct.

Himalaya (Kashmir, Nepal, Sikkim), Tibet.

Distribution: Pakistan, N. India, Nepal, Sikkim, Bhutan, China (Xizang, Yunnan).

W Sichuan, SE Xizang, W Yunnan [Bhutan, N India, Myanmar, Nepal, Sikkim].

3300-4200 m

Fl. Per.: July-September.

Grows from 3000-4500 m among boulders, on rocks, slopes, moraine and alpine meadows.

Forests, rocks on slopes; 2500-3800 m.

Rhodiola wallichiana là một loài thực vật có hoa trong họ Crassulaceae. Loài này được (Hook.) S.H. Fu miêu tả khoa học đầu tiên năm 1965.

粗茎红景天（学名：Rhodiola wallichiana）为景天科红景天属的植物。分布在不丹、尼泊尔、锡金、缅甸以及中国大陆的西藏、云南等地，生长于海拔2,600米至3,800米的地区，常生于山坡林下石上，目前尚未由人工引种栽培。