Acanthocereus tetragonus (L.) Hummelinck [ Cereus variabilis Engelm.]
no HD illustration available (m1)
Acanthocereus tetragonus (L.) Hummelinck [ Cactus tetragonus L.] [Cactaceae]
Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 60 () [P. Roetter]