USA, Arizona, Pima, Maricopa County: Grown in cultivation at Desert Botanical Garden, Phoenix, N 33 deg 27' 33'', W 111 deg 56' 35'', 1200 ft., 366 m; accession number 1987 0009 0101; Originally received as a plant collected 8 APR 1987, from Arizona, Papago Indian Reservation, on S side of road to Santa Rosa; Sifoadale District, #4 Borrow Pit; Native Plant Tag # 17855
32.323424 -112.059958 +-10000m.
roadside
Flower diameter 77-94 mm; length 121-131 mm; stigma lobe number 12-13, cream colored; outer perianth green to lighter on outer edges; inner white; crested saguaro; spines at base; flowers treated with isopropanol. Stem shape cylindrical, gray-green; 4 spine clusters collected, gray; 19 ribs; not very many spines -- even on new growth.