Echinocereus polyacanthus ENGELMANN
WISLIZENUS. – Mem. Tour North. Mex.: 104 (1848)

Echinocercus polyacanthus, n. sp., elongato-ovatus, 10-costatus; areolis elevatis, ovatis, subapproximatis, junioribus albido 4-tomentosis; aculeis radialibus 10-12 flavidis, apice adustis, plus minus porrectis; lateralibus majoribus, demum subadpressis, superioribus minoribus; centralibus sub-4 corneis, apice fuscis, 3 superioribus sursum versis, inferiore singulo longiore porrecto, demum deflexo.
Cosihuiriachi.—Several oval stems, 4 to 5 inches high and 2.5 to 3 in diameter, from one base; upper radial spines 4 to 5, lateral and inferior 8 to 10, upper central 9 to 12, lower one 15 to 20 lines long. Spines at last
ashy-gray.

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