Description from Flora of China
Sedum sachalinense (Borissova) Voroschilov.
Roots usually erect, rarely prostrate, robust. Caudex short, thick. Caudex leaves dusky, scalelike, membranous. Flowering stems 6-30 cm. Stem leaves basally remote but apically denser, spatulate, oblong-rhombic, or -lanceolate, 0.7-4 × 0.4-0.9 cm, base cuneate, margin basally subentire but apically roughly dentate, apex acute to acuminate. Inflorescences cymes, compact, 1.5-2.5 cm in diam., many flowered, basally leafy. Flowers unisexual, 4(or 5)-merous. Sepals lanceolate-linear, 1-3 mm. Petals yellowish, linear-oblanceolate to oblong, 2-6 mm, apex obtuse. Stamens of male flowers 8, longer than petals; anthers yellow. Nectar scales 4, oblong, 1-1.5 × ca. 0.6 mm, apex emarginate. Carpels of female flowers 4. Styles recurved. Follicles erect, lanceolate to linear-lanceolate, 6-8 mm, apical beak ca. 1 mm. Seeds oblong to lanceolate, ca. 2 × 0.6 mm. Fl. Apr-Jun, fr. Jul-Sep.
Forested slopes, gravel slopes, alpine tundra; 1600-2500 m. Heilongjiang, Jilin [Japan, Korea, Russia].