Ferocactus viridescens (Torr. & A.Gray) Britton & Rose, Cactaceae 3: 140. 1922
Ferocactus viridescens, Cactaceae 3: 140. 1922
is new combination for Echinocactus viridescens, Fl. N. Amer. 1(4): 554. 1840
Ferocactus viridescens, Cactaceae 3: 140. 1922