Mammillaria elongata var. viperina (J.A.Purpus) W.T.Marshall in Marshall & Bock, Cactaceae: 180. 1941
Mammillaria elongata var. viperina in Marshall & Bock, Cactaceae: 180. 1941
is new combination for Mammillaria viperina in Monatsschr. Kakteenk. 22: 148. 1912