Opuntia macrorhiza Engelm. [ Opuntia tortispina Engelm. & J.M. Bigelow]
Bigelow, J.M., Plates to the Cactaceae of Whipple’s expedition (1856)
Expl. Railroad Mississippi Pacific

t. 8
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name recognized:
720490 Opuntia macrorhiza Engelm.

name cited:
720921 Opuntia tortispina Engelm. & J.M. Bigelow

drawing: P. Roetter
family: Cactaceae
subfamily: Opuntioideae
epithet cited: tortispinus,-a,-um

epithet recognized: macrorhizus,-a,-um

Illustration contributed by:
Missouri Botanical Garden, St. Louis, U.S.A.
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