Mammillaria tenuis DC. in Mém. Mus. Hist. Nat. 17: 110. 1828
Mammillaria tenuis in Mém. Mus. Hist. Nat. 17: 110. 1828
is basionym for Cactus tenuis, Revis. Gen. Pl. 1: 261. 1891
is basionym for Mammillaria elongata var. tenuis, Gesamtbeschr. Kakt.: 520. 1897–1899
is basionym for Mammillaria elongata f. tenuis, Handb. Kakteenkult.: 247. 1907