Opuntia ignota Britton & Rose, Cactaceae 1: 99. 1919
Opuntia ignota, Cactaceae 1: 99. 1919
is basionym for Cumulopuntia ignota, Kakteen Südamerika 4: 1250. 1981
is basionym for Tephrocactus ignotus, Kaktus-ABC: 111. 1936 ["1935"]
Syntype: Peru, Arequipa, Below Pampa de Arreiros, 23 Aug 1914, J.N. Rose 18974 (NY: NY00386084) https://plants.jstor.org/stable/10.5555/al.ap.specimen.ny00386084
Syntype: Peru, Arequipa, Below Pampa de Arreiros, 23 Aug 1914, J.N. Rose 18974 (NY: NY00386085) https://plants.jstor.org/stable/10.5555/al.ap.specimen.ny00386085
Opuntia ignota, Cactaceae 1: 99. 1919