Plates to the Cactaceae of the Mexican boundary
Rep. U.S. Mex. Bound.
name recognized (= cited name):
639892 Mammillaria wrightii Engelm.
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2 639892 Mammillaria wrightii Engelm.
Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 8 () [P. Roetter]