Description from Flora of China
Sedum suboppositum Maximowicz, Bull. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 3, 29: 132. 1883.
Plants greenish. Flowering stems numerous, slender, flexuose, more than 30 cm. Stem leaves subopposite or alternate, divergent, shortly petiolate to subsessile; leaf blade broadly elliptic to ovate, ca. 2 × 1 cm, margin irregularly crenulate, apex obtuse. Inflorescences cymes, ca. 10 mm in diam., to 4 cm in fruit, many flowered, bracteate. Flowers unisexual, unequally 5-merous, ca. 7 mm in diam., equaling pedicel. Sepals oblong. Petals yellow, oblong. Stamens 10, slightly longer than petals. Nectar scales subquadrangular, apex emarginate. Carpels of male flowers rudimentary, ovoid, small. Styles short, apiculate. Follicles ca. 6 mm, apical beak horizontally spreading, short. Seeds winged.
* Rocks in alpine areas; 3800-4100 m. C Gansu (Tianzhu Zhang Zu Zizhixian), NE Qinghai.