Malacocarpus schumannianus (Nicolai) Britton & Rose, Cactaceae 3: 189, f. 199. 1922
Malacocarpus schumannianus, Cactaceae 3: 189, f. 199. 1922
is new combination for Echinocactus schumannianus in Monatsschr. Kakteenk. 3: 175. 1893
Malacocarpus schumannianus, Cactaceae 3: 189, f. 199. 1922
Taxon for this name