Hallianthus griseus S.A.Hammer & U.Schmiedel in Cact. Succ. J. (Los Angeles) 74: 230. 2002
Hallianthus griseus in Cact. Succ. J. (Los Angeles) 74: 230. 2002
is basionym for Cephalophyllum griseum in Cact. Succ. J. (Los Angeles) 75: 170. 2003
Hallianthus griseus in Cact. Succ. J. (Los Angeles) 74: 230. 2002
Taxon for this name