Discocactus patulifolius Buining & Brederoo in Kakteen And. Sukk. 25: 195. 1974
Discocactus patulifolius in Kakteen And. Sukk. 25: 195. 1974
is basionym for Discocactus hartmannii subsp. patulifolius in Kakteen And. Sukk. 46: 64. 1995
is basionym for Discocactus hartmannii var. patulifolius in Kakteen And. Sukk. 36: 23. 1985