Mammillaria angularis f. triacantha (DC.) Schelle, Handb. Kakteenkult.: 265. 1907
Mammillaria angularis f. triacantha, Handb. Kakteenkult.: 265. 1907
is new combination for Mammillaria triacantha in Mém. Mus. Hist. Nat. 17: 113. 1828
Mammillaria angularis f. triacantha, Handb. Kakteenkult.: 265. 1907
Taxon for this name