Echinocactus horizonthalonius Lemaire
Engelmann, G., Plates to the Cactaceae of the Mexican boundary (1857-1859)
Rep. U.S. Mex. Bound.

t. 32
name recognized (= cited name):
369160 Echinocactus horizonthalonius Lemaire
drawing: P. Roetter
family: Cactaceae
subfamily: Cactoideae
tribe: Cacteae
epithet: horizonthalonius,-a,-um

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heterotypic synonyms:
Echinocactus equitans Scheidw.; Echinocactus horizontalis C.F.Först.; Echinocactus laticostatus Engelm. & J.M.Bigelow; Echinocactus pachycornis Muehlenpf.;
no full size  illustration available (3a)