Discocactus melanochlorus Buining & Brederoo, Discocactus: 135. 1976 Discocactus melanochlorus Buining & Brederoo, Discocactus: 135. 1976is basionym for Discocactus heptacanthus subsp. melanochlorus (Buining & Brederoo) P.J.Braun & Esteves in Kakteen And. Sukk. 44: 103. 1993Taxon for this nameDiscocactus melanochlorus Buining & Brederoo