Opuntia mackensenii
Opuntia mackensenii in Contr. U.S. Natl. Herb. 13(9): 310, pl. 67. 1911 sec. Powell & Weedin 20041
- =Opuntia macrocentra var. minor in Amer. Midl. Naturalist 55(1): 244–245, f. 21. 1956 syn. sec. Majure 20212
- ≡Opuntia mackensenii var. minor, Cacti Trans-Pecos: 153. 2004 syn. sec. Majure 20212
- 2. Majure, L.C. 2021: Revisions of Cochemiea, Consolea, Coryphantha, Cylindropuntia, Cumarinia, Grusonia, Kroenleinia, Leptocereus, Melocactus, Micropuntia, Opuntia. – In: Korotkova N. & al., Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family. – Willdenowia 51: 251-270. http://doi.org/10.3372/wi.51.51208