Crassula socialis is native to South Africa. It grows in rock crevices on cliffs that are usually south- or southeast-facing and is known from only a few localities in the Eastern Cape province, near King William's Town and Kommadagga.
Crassula socialis is a small succulent that forms dense clusters of rosettes with green, 4-ranked leaves, often tinged red towards the margins. It proliferates from the base and can grow up to 2.4 inches (6 cm) tall when flowering. The rosettes can reach a diameter of up to 0.8 inches (2 cm). The leaves are flat, ovate to elliptical, and taper to a point. They are closely appressed and can measure up to 0.45 inches (1.4 cm) long and 0.25 inches (0.6 cm) wide. The leaves are slightly fleshy and smooth, with a dense row of cilia along the margins. The old leaves remain attached to the stems.
During late winter and spring, Crassula socialis produces small flowers with a white, tubular corolla, basally fused petals, and yellow anthers. The inflorescences are terminal, more or less rounded thyrses with 1 to 3 dichasia and a distinct, slender peduncle that can grow up to 2.4 inches (6 cm) long.
Source: World of Succulents