Opuntia ammophila Small in Bull. New York Bot. Gard. 20: 29. 1919
Opuntia ammophila in Bull. New York Bot. Gard. 20: 29. 1919
is basionym for Opuntia humifusa var. ammophila in Cact. Succ. J. (Los Angeles) 48: 59. 1976
Opuntia ammophila in Bull. New York Bot. Gard. 20: 29. 1919