Discocactus hartmannii var. mamillosus (Buining & Brederoo) P.J.Braun in Kakteen And. Sukk. 36: 23. 1985
Discocactus hartmannii var. mamillosus in Kakteen And. Sukk. 36: 23. 1985
is new combination for Discocactus mamillosus in Kakteen And. Sukk. 25: 217. 1974