Reference taxon from ITIS Global in Species 2000 & ITIS Catalogue of Life
Echinocereus cinerascens var. septentrionalis N. P. Taylor
Homotypic synonym according to GBIF classification (Originally found in sources as accepted taxon within Echinocereus cinerascens (DC.) H.P.Kelsey & Dayton)
Echinocereus chlorophthalmus (Hook.) Britton & Rose