Echinomastus unguispinus (Engelm.) Britton & Rose

name cited:
Echinocactus unguispinus Engelm.
name recognized:
Echinomastus unguispinus (Engelm.) Britton & Rose
name recognized (basionym):
Echinocactus unguispinus Engelm.

family: Cactaceae
subfamily: Cactoideae
tribe: Cacteae

epithet: unguispinus,-a,-um

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http://www.plantillustrations.org/illustration.php?id_illustration=383599

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homotypic synonyms:
Echinocactus unguispinus Engelm.; Neolloydia unguispina (Engelm.) L.D. Benson; Pediocactus unguispinus (Engelm.) Halda; Sclerocactus unguispinus (Engelm.) N.P. Taylor; Thelocactus unguispinus (Engelm.) G.D. Rowley;