Opuntia densispina Ralston & Hilsenb. in Madroño 39(4): 281–284, f. 1. 1992
Opuntia densispina in Madroño 39(4): 281–284, f. 1. 1992
is basionym for Grusonia densispina in J. Arizona-Nevada Acad. Sci. 34(1): 45. 2002
is basionym for Corynopuntia densispina in Phytoneuron 2016-1: 24. 2016