Crassula tetragona Linnaeus, Species Plantarum 1: 283. 1753.

"Habitat in Aethiopia." RCN: 2241.

Lectotype ( Tölken in J. S. African Bot. 38: 78. 1972): Herb. Linn. No. 400.6 (LINN) .

Current name: Crassula tetragona L. ( Crassulaceae).