Echinopsis hamatacantha Backeb. in Kaktusář 5: 69. 1934
Echinopsis hamatacantha in Kaktusář 5: 69. 1934
is basionym for Mesechinopsis hamatacantha, Explan. Diagr. Austroechinocactinae: 74. 1957
is basionym for Pseudolobivia hamatacantha, Stachlige Wildnis: 253. 1942
is basionym for Echinopsis ancistrophora var. hamatacantha, Lobivia: 140. 1975