Species plantarum: exhibentes plantas rite cognitas, ad genera relatas, cum differentiis specificis, nominibus trivialibus, synonymis selectis, locis natalibus, secundum systema sexuale digestas Linnaeus, Carolus Z7LS Linnaeus 1753 Magnoliopsida Crassulaceae Crassula GBIF,IPNI Plantae Saxifragales Tracheophyta species tetragona spec. nov.  3. Crassula foliis subulatis obsolete tetragonis. Hort. cliff. 116.* Roy. lugdb. 455.   Habitat inAEthiopia . ♄