Discocactus griseus Buining & Brederoo in Succulenta (Netherlands) 54: 186. 1975
Discocactus griseus in Succulenta (Netherlands) 54: 186. 1975
is basionym for Discocactus catingicola subsp. griseus in Kakteen And. Sukk. 46: 64. 1995
is basionym for Discocactus catingicola var. griseus in Kakteen And. Sukk. 44: 112. 1993