Basionym Name:Stereocaulon obesum var. efflorescens Räsänen, Anal. Soc. cient. argent. 128(3): 136 (1939)
Homotypic synonyms:Stereocaulon vesuvianum var. efflorescens (Räsänen) I.M. Lamb, An. Parques Nac., Buenos Aires 7: 100 (1959)