Crassula tetragona Thunb. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Saxifragales family Crassulaceae genus Crassula species Crassula tetragona Name Homonyms Crassula tetragona L. Crassula tetragona Thunb. Crassula tetragona Harv.