Turbinicarpus schmiedickeanus subsp. gracilis (Glass & R.A.Foster) Glass, Guía Identific. Cact. Amenazadas México: Tu/sch.
Turbinicarpus schmiedickeanus subsp. gracilis, Guía Identific. Cact. Amenazadas México: Tu/sch. 1997 ["1998"]
is new combination for Turbinicarpus gracilis in Cact. Succ. J. (Los Angeles) 48(4): 176. 1976
Turbinicarpus schmiedickeanus subsp. gracilis, Guía Identific. Cact. Amenazadas México: Tu/sch. 1997 ["1998"]