Echinocereus viridiflorus Engelm.
Walcott, M.V., North American wild flowers (1925-1927)
N. Amer. Wild Fl.

vol. 4
t. 308
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name recognized (= name cited):
370319 Echinocereus viridiflorus Engelm.

family: Cactaceae
subfamily: Cactoideae
tribe: Pachycereeae
epithet: viridiflorus,-a,-um

Illustration contributed by:
Smithsonian Institute, Washington, D.C., U.S.A.
link to this page:
http://www.plantillustrations.org/illustration.php?id_illustration=177992
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heterotypic synonyms:
Cereus viridiflorus Engelm.; Echinocactus viridiflorus (Engelm.) Pritz.; Echinocereus chloranthus Haage; Echinocereus standleyi Britton & Rose;
no full size  illustration available (3a)