Mammillaria schelhasii f. triuncinata (Salm-Dyck) Schelle, Handb. Kakteenkult.: 252. 1907
Mammillaria schelhasii f. triuncinata, Handb. Kakteenkult.: 252. 1907
is new combination for Mammillaria schelhasii var. triuncinata, Cact. Hort. Dyck., ed. 1849: 81. 1850