Source additionnelle
Majure, L., Judd, W., Soltis, P. & Soltis, D. 2017. Taxonomic revision of the Opuntia humifusa complex (Opuntieae : Cactaceae) of the eastern United States. Phytotaxa, 290(1): 1. : 52

 

Type :  Type:—UNITED STATES. Florida: [Alachua Co.,] pine-woods, 12 mi west of Gainesville, 13 December 1917, Small s.n. (holotype NY-00385985!, image available at http://sweetgum.nybg.org/science/vh/ specimen_details.php?irn=649536)