Sedum callianthum H. Ohba, J. Jap. Bot. 49: 325. 1974.

Caudex terete, ca. 1.5 cm in diam. Caudex leaves brownish, scalelike, triangular to ovate-triangular. Flowering stems straw-colored when dry, 12-18 × 1.5 cm. Stem leaves subopposite or alternate; petiole ca. 2 mm; leaf blade rhombic-ovate or narrowly so or elliptic or narrowly so, 4-5.5 × 1-2.2 cm, base attenuate, margin apically roughly serrate-crenate, apex acute. Inflorescences terminal, compound corymbs; peduncle 0.5-1.5 cm; bracts few, resembling stem leaves but smaller. Flowers unisexual, male ones unequally 5-merous; pedicel 1.5-2.5 mm. Sepals triangular to ovate-triangular, 1.2-0.6 mm, apex obtuse. Petals pinkish to purple, narrowly obovate, 3-4.5 × 0.8-1.5 mm, margin entire or erose toward apex, apex obtuse. Stamens 10; antepetalous ones 1-1.5 mm, inserted ca. 0.5 mm from petal base. Nectar scales suboblong, apex rounded-truncate. Carpels erect, lanceolate, ca. 1.5 mm. Fl. Jun.

Rocks on shady slopes; ca. 3600 m. S Xizang (Gyirong Xian) [Nepal].