Echinocereus yavapaiensis M.A. BAKER Baker, M. A..- Pl. Syst. Evol. 258: 63 – 83 (2006) Holotypus USA, Arizona, Yavapai County, Battle Flat Quadrangle, Muldoon Gulch, 7 km NNE of Crown King, 5. April 2000, MAB & DL 13723 [ASU 238488, Barcode 8818471] Synonyme Keine Etymologie Echinocereus = Igelsäulenkaktus yavapaiensis = benannt nach Herkunft im Yavapai County Originaltext der Erstbeschreibung (Auszug) Stems generally uniformly cespitose, to 48 cm long, mostly less than 30 cm; thick, averaging nearly 7 cm in diameter, number of ribs 10–14, mostly 12; distance between adjacent areoles on the same rib mostly less than 10 mm; number of radial spines ca. 9, ca. 2 cm long; number of central spines 1–3 (4), to 6 cm long, mostly less than 3 cm, thin, ca. 0.55 mm dia.; flowers dimorphic with a single form per plant; pollen-fertile flowers averaging 54 mm long and 38 mm wide, length from base of pericarpel to upper areole 42 mm, style averaging 33 mm long, stamens averaging 30 mm long; pollen-sterile flowers smaller, averaging 49 mm in length …