Areces-Mallea A. E., A new opuntioid cactus from the Cayman Islands, B.W.I., with a discussion and key to the genus Consolea Lemaire, Brittonia, 2001, 53(1):96-107, doi: 10.1007/BF02805401
The publication includes a description of Consolea millspaughii subsp. caymanensis and a key to the genus as understood at the time. It compares spines, stem surfaces and flowers, and explains the earlier identification of Cayman plants as C. spinosissima.