Mammillaria grahamii
0
Mammillaria grahamii Engelm. (Cactaceae) [Accepted]

protologue: Proc. Amer. Acad. Arts 3: 262 (1856)

2 639056 Mammillaria grahamii Engelm.
Rep. U.S. Mex. Bound. (Cactaceae of the boundary): t. 6 () [P. Roetter]