Echinocactus maassii Heese in Gartenflora 56: 410. 1907
Echinocactus maassii in Gartenflora 56: 410. 1907
is basionym for Parodia maassii, Kakteen: 344. 1929
is basionym for Bolivicactus maassii in Sukkulenty 3: 62. 2000
is basionym for Malacocarpus maassii, Cactaceae 3: 202. 1922
Lectotype (designated by Hunt, D.R. & Taylor, N. P. 2006: 91): [icon] photograph 'Abb. 50 Echinocactus Maaßii nov. spec.' in Heese in Gartenflora 56: 410. 1907