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6 1139594 Cylindropuntia whipplei (Engelm. & J.M.Bigelow) F.M.Knuth (Engelm. & J.M.Bigelow) F.M.Knuth [Opuntia whipplei Engelm. & J.M.Bigelow]
J.M. Bigelow, Expl. Railroad Mississippi Pacific: t. 17 (1856) [P. Roetter]
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