Umbilicus affinis Schrenk in Fischer & C. A. Meyer, Enum. Pl. Nov. 1: 72. 1841; Cotyledon affinis (Schrenk) Maximowicz; Sedum affine (Schrenk) Raymond-Hamet; S. albertii Regel; S. schrenkii Fröderström.

Roots numerous, branched, tufted. Sterile shoots numerous, small, 1-2 mm. Leaves crowded apically on stem, alternate, linear to suboblong, subterete, 4-6 × 1-1.5 mm, densely and minutely papillate apically, base broadly spurred, apex obtuse. Flowering stems few, prostrate at base and usually rooting, erect toward apex, 8-15 cm, sparsely leafy. Inflorescence corymbiform with nearly scorpioid branching, 1.5-2.5 × 2.5-4 cm. Flowers subsessile. Sepals subovate, 1.5-2.5 mm, base subconnate, apex subacute. Corolla white; tube 1-1.5 mm; lobes oblong, 5-6 mm. Stamens 10-12; epipetalous ones ca. 3 mm, inserted ca. 1 mm from petal base. Nectar scales 5 or 6, semilunate, ca. 0.3 × 1 mm, apex dentate. Carpels 5 or 6, erect, lanceolate. Follicles many seeded. Seeds ovoid. Fl. May-Jun, fr. Jul-Aug.

V. V. Byalt (pers. comm.) believes that this species is not a true Pseudosedum, but belongs within Sedum proper.

Grasslands, shady slopes in valleys, sandy beaches along rivers, gravelly areas, sandy-silty soil; 700-1600 m. W Xinjiang (Huocheng Xian, Tacheng Xian) [Kazakhstan, Kyrgyzstan, Russia, Tajikistan, Uzbekistan].