This name is a synonym of Opuntia microdasys subsp. rufida (Engelm.) U. Guzmán & Mandujano.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5108118) with original publication details: Amer. Midl. Naturalist 55(1): 240, f. 15 [right] 1956.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:175519-2.
This name was in version 1 of The Plant List, record tro-5108118, and has not been changed.