Cactaceae Juss.
Opuntia arbuscula Engelm. , legitimate, scientific
Engelmann, G. (1857), Synopsis of the Cactaceae of the territory of the United States and adjacent regions. Proceedings of the American Academy of Arts and Sciences 3: 309 [tax. nov.]
Backeberg, C. & Knuth, F.M. (1936), Kaktus-ABC, en Haandbog for Fagfolk og Amatorer: 123 [basionym]
basionym of: Cylindropuntia arbuscula (Engelm. & J.M.Bigelow) F.M.Knuth legitimate