Ferocactus viridescens (Nutt. ex Torrey & A. Gray) Britton & Rose [ Echinocactus viridescens Nutt.]
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6 432156 Ferocactus viridescens (Nutt. ex Torrey & A. Gray) Britton & Rose [80 369724 Echinocactus viridescens Nutt.] Cactaceae
Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 29 () [P. Roetter]