homotypic synonyms:
Grusonia tetracantha species (Toumey) G.D.Rowley; Opuntia tetracantha species Toumey;
protologue: Kaktus-ABC : 124 (1935)
6 1139580 Cylindropuntia tetracantha (Toumey) F.M.Knuth [125 720908 Opuntia tetracantha Toumey]
N.L. Britton, J.N. Rose, Cact., vol. 1 : t. 9 (1919) [Krieger]
Grusonia tetracantha species (Toumey) G.D.Rowley; Opuntia tetracantha species Toumey;
protologue: Kaktus-ABC : 124 (1935)
6 1139580 Cylindropuntia tetracantha (Toumey) F.M.Knuth [125 720908 Opuntia tetracantha Toumey]N.L. Britton, J.N. Rose, Cact., vol. 1 : t. 9 (1919) [Krieger]