Echinocactus hybocentrus Lehm. ex Pfeiff.
no HD illustration available (m1)
Echinocactus hybocentrus Lehm. ex Pfeiff. [Cactaceae]
L.K.G. Pfeiffer, F. Otto, Abbild. Beschr. Cact. (Coloured version), vol. 1 : p. 21, t. 21 (1839)