Rhodiola chrysanthemifolia subsp. sacra

Caudex terete, 0.7-1.5 cm in diam. Caudex leaves brown, scalelike, triangular. Flowering stems simple, erect to ascending, 9.5-14(-21) cm. Stem leaves alternate, sessile, oblong, obovate-oblong, or obovate, gradually smaller toward base on stem, 1.5-2.2 × 0.8-1.1 cm, base attenuate and spurless, margin with 2 shallowly incised serrations on each side, mammillate when dry, apex obtuse. Inflorescences corymbiform, somewhat compact, 10-15-flowered; bracts spatulate to oblanceolate, 6-8 × ca. 1 mm. Flowers bisexual, unequally 5-merous. Sepals linear-lanceolate, 4-5 × ca. 1 mm. Petals reddish or white, oblong-ovate, 6-7 × ca. 4 mm, margin basally entire and apically erose, apex acuminate. Stamens 10, shorter than petals; antesepalous ones to 6 mm; antepetalous ones to 3 mm, inserted ca. 2 mm from petal base. Nectar scales suboblong, ca. 0.4 × 0.6 mm, apex emarginate. Carpels erect, lanceolate, ca. 6 mm, base subconnate. Styles ca. 1 mm. Fl. Aug-Sep.

Caudex short, fleshy. Flowering stems simple, erect, 8-11 cm, glabrous, apically finely mammillate. Stem leaves alternate, evenly distributed; petiole 1.5-2 cm; leaf blade oblong, 1-3 × 0.5-2.5 cm, base abruptly narrowed, margin deeply crenate to pinnatifid and finely mammillate, apex obtuse. Inflorescences corymbiform, compact; bracts linear, 8-11 mm. Flowers bisexual, unequally 5-merous; pedicel short, finely mammillate. Sepals triangular-linear, ca. 6 mm, base ca. 1.5 mm wide, margin sometimes finely mammillate. Petals narrowly oblong to elliptic, 5.5-8.5 × 2.5-4.3 mm, margin apically erose, apex obtuse. Stamens 10; antesepalous ones ca. 6 mm; antepetalous ones 2.5-3 mm, inserted ca. 2 mm from petal base. Nectar scales quadrangular, ca. 0.4 × 0.5 mm, apex emarginate. Carpels erect, narrowly lanceolate, ca. 6.5 mm. Styles ca. l.5 mm. Fl. Sep.

NE Xizang.

* Forests, forest margins, rock crevices in scrub or on sunny slopes, moss-covered rocks, riversides; 3800-4600 m.

* W Sichuan (Batang Xian), E Xizang.

Sedum tieghemii Raymond-Hamet, Bull. Soc. Bot. France 55: 711. 1908; S. linearifolium Royle var. tieghemii (Raymond-Hamet) Raymond-Hamet.