Rhodiola

HOBSONII (Prain ex Hamet) S.H.Fu, 1965

Synonyms :

Sedum hobsonii  Prain ex Hamet (1913)

Sedum praegerianum  W.W.Smith (1915)

Sedum mirabile  Ohba (1974)

Section Hobsonia

Distribution : Bhutan, Sikkim, Tibet; forests, thickets, rock crevices, 2600 - 4100 m.

Description (according to H. Ohba in IHSP, 2003) :

Hermaphrodite, to 7 - 12 cm tall.

Rhizomes thick, 1 - 5 cm long, 1 - 1.5 cm in diameter.

Radical leaves fleshy, deciduous, petiole 7 - 10 mm, flat, gradually broadening towards the base, 2 - 4 mm broad at the base, lamina lanceolate or linear-ovate, 7.5 - 10 x 3.2 – 4 mm, tip obtuse, margin entire.

Flowering stems 2 - 18, ascending, glabrous, 1 - 1.8mm in diameter.

Leaves spreading widely, sessile, spatulate to trullate or narrowly oblong-ovate, 6 - 15 x 2 - 4.5 mm, tip obtuse to round, base shortly attenuate, entire, glabrous.

Inflorescences helicoid cymes, 5- to 10-flowered, 0.7 - 3.5 x 1.2 - 4.5 cm in diameter.

FIowers 7 - 9 mm in diameter,calyx 4.4 - 7 mm, glabrous, sepals lanceolate or long-ovate, 3.5 - 5.2 mm, petals lanceolate or oblong-elliptic, 5.5 - 7.6 mm, pink, nearly erect,stamens shorter than the petals.

Flowering time : Late August to September.




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