ATUNTSUENSIS (Praeger) S.H Fu, 1965
Synonyms :
Sedum atuntsuense Praeger (1921) / Chamaerhodiola atuntsuensis (Praeger) Nakai (1934) /
Rhodiola nobilis ssp. atuntsuensis (Praeger) Ohba (1982)
Sedum concinnum Praeger (1921) / Rhodiola concinna (Praeger) S.H.Fu (1965)
Sedum venustum Praeger (1921) / Rhodiola venusta (Praeger) S.H.Fu (1965)
Sedum aporonticum Fröderström (1944) / Rhodiola aporontica (Fröderström) S.H.Fu (1965)
Sedum brevipetiolatum Fröderström (1944) / Rhodiola brevipetiolata (Fröderström) S.H.Fu (1965)
Section Chamaerhodiola
Distribution : Eastern Tibet, northern Myanmar, south-western China (western Sichuan, north-western Yunnan); forests, glacial valleys, rocks, gravel areas, 3100 - 5000 m.
Description (according to H. Ohba in IHSP, 2003) :
Dioecious, 4 - 12 cm tall, rhizomes nearly cylindrical, to 1 cm in diameter.
Flowering stems 1.2 - 1.5 mm in diameter, smooth, not umbellately verticillate in age, ascending.
Leaves narrowly obovate to oblong, 4 - 8 x 1.6 - 3 mm, tip round, base (shortly) attenuate, margin
entire to sparsely and irregularly crenulate.
Inflorescences 4- to 20-flowered.
Flowers : Calyx 3 - 4.5 mm, smooth, sepals very narrowly oblong to subulate, 1.8 - 3 mm, petals narrowly oblong to oblong, 3.5 - 4.5 mm (male) or 2.8 - 3 mm (female), creamy or pale pink, stamens longer than the petals.
R. atuntsuensis is distinguished from R. nobilis by its densely fastigiate straight flowering stems, by
the narrowly obovate to oblong leaves and by the more numerous flowers per inflorescence.