Echinocereus roetteri (Engelm.) Engelm. ex Rümpler [ Cereus roetteri Engelm.]
no HD illustration available (m1)
Echinocereus roetteri (Engelm.) Engelm. ex Rümpler [ Cereus roetteri Engelm.] [Cactaceae]
Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 41 () [P. Roetter]