Description from Flora of China
Sterile stems small. Flowering stems ascending, weak, 14-20 cm; basal nodes rooting. Leaves 3-verticillate on proximal and middle parts of stem; leaf blade linear to oblanceolate, 2-3 cm × 3-4 mm, base broadly spurred, apex subacute and minutely papillate. Cyme scorpioid, lax, few flowered; bracts 1-1.5 cm. Flowers unequally 5-merous. Sepals broadly lanceolate, unequal, 4-5 × ca. 1 mm, base shortly spurred, apex subacute. Petals free, yellow, lanceolate, ca. 6 × 1.2 mm, apex acuminate and long mucronate. Stamens 10, 4-5 mm; antepetalous ones inserted 1.5-2 mm from petal base; anthers broad, apex obtuse. Nectar scales subspatulate-quadrangular, ca. 0.5 × 0.5 mm, apex subretuse. Carpels substellate, 4.5-5.5 mm. Styles ca. 1 mm. Seeds subovoid, small, ca. 0.4 mm. Fl. May.
This species is very close to Sedum lineare, and the two may in fact be conspecific.
* C and W Guangdong, E Guangxi.