Malacocarpus graessneri (K.Schum.) Britton & Rose, Cactaceae 3: 205. 1922
Malacocarpus graessneri, Cactaceae 3: 205. 1922
is new combination for Echinocactus graessneri in Monatsschr. Kakteenk. 13: 130. 1903
Malacocarpus graessneri, Cactaceae 3: 205. 1922
Taxon for this name