Rhodiola stephanii (Cham.) Trautv. & Mey.

Rhodiola pinnatifida falls within the range of variation of R. stephanii and is therefore difficult to separate from the latter species. Further study is needed to determine whether or not the two are conspecific.

Main root few branched, thick, fusiform. Caudex 1-1.5 × 1-2 cm. Caudex leaves scalelike, oblong-triangular, 4-5 × ca. 3 mm, apex acute. Flowering stems few, erect, 10-20 cm × 3-4 mm, densely leafy. Stem leaves alternate, subopposite, or nearly 3-verticillate, linear-lanceolate to lanceolate, 2-3.5 × 0.3-0.5 cm, base attenuate, apex acute. Inflorescences corymbiform-umbellate, compact, 1.5-2 × 2.5-3 cm, many flowered. Flowers unisexual, unequally 4-merous in male plants, shorter than pedicel. Sepals yellowish green, lanceolate, ca. 4 mm, apex subacute. Petals yellow, lanceolate to oblong-lanceolate, ca. 6 mm, apex subobtuse. Stamens 8, ca. 9 mm, ca. 1.5 × as long as petals; filaments yellow; anthers greenish yellow, globose. Nectar scales ca. 1 × 0.5 mm. Follicles oblong-lanceolate, to 8 mm, apical beak 1-2 mm. Seeds brown, oblong, to 2 mm. Fl. Jun-Aug, fr. Jul-Aug.

Roots branched, thick. Caudex few branched, short, 5-10 mm in diam. Flowering stems few, 10-20 cm × 2.5-5 mm. Stem leaves pale green, linear-lanceolate to lanceolate, 3-5 × 0.6-0.8 cm, base cuneate, margin apically roughly and deeply serrate, apex acuminate. Inflorescences compact, 2-3 cm in diam., bracteate. Flowers shortly pedicellate, unisexual, male ones unequally 4- or 5-merous. Sepals linear, 3-4 mm. Petals yellowish to yellowish white, linear-lanceolate, 5-6 mm, apex obtuse. Stamens 8 or 10, equaling or slightly longer than petals; filaments pale; anthers yellowish, sometimes reddish. Nectar scales subquadrangular. Carpels narrowly ovoid. Styles erect, long. Stigma wide. Follicles erect, oblong-lanceolate, 7-10 mm, apical beak ca. 1 mm. Seeds brown, obovoid. Fl. Jun-Aug, fr. Jul-Aug.

N Xinjiang (Altay Shan) [Mongolia, Russia].

About 2200 m.

N Nei Mongol (Hulun Buir Meng) [Russia].

Sedum pinnatifidum (Borissova) J. P. Kozhevnikov.

Sedum stephanii Chamisso, Linnaea 6: 549. 1831; Chamaerhodiola stephanii (Chamisso) Nakai; S. crassipes Wallich ex J. D. Hooker & Thomson var. stephanii (Chamisso) Fröderström.