Echinocactus simpsonii Engelm.
Engelmann, G., Report on the botany of the expedition of Capt. J.H. Simpson across the great basin of Utah (1859), Appendix M (1876)
Rep. Bot. Exped. Capt. Simpson Utah

t. 2
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name recognized (= name cited):
369608 Echinocactus simpsonii Engelm.

drawing: P. Roetter
family: Cactaceae
subfamily: Cactoideae
tribe: Cacteae
epithet: simpsonii

Illustration contributed by:
Missouri Botanical Garden, St. Louis, U.S.A.
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Echinocactus simpsonii Engelm.
G. Engelmann, Rep. Bot. Exped. Capt. Simpson Utah: t. 2 (1876) [P. Roetter]