USA, Arizona, Pinal, 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 1986-0158-01-10; originally received as a plant collected by Victor Gass with Patrick Quirk, Wendy C. Hodgson and Gary Nabhan from Arizona, Pinal County near Tucson 3/4 miles north of Mile Wide Road and 1 mile west of Sanders Road in the CAP right-of-way; Sect 29 T13S R11E in the vicinity of the given coordinates. Permission for collection of plants given by Brian Lanber of the State Land Department. Collector's notes: associated species Larrea, Ambrosia, Cercidium, Olneya, Prosopis.
32.259319 -111.250021
TRS: T13S R11E sec 29
670 metros
2199ft
Plant height 15 feet; stems gray-green; spines dark gray; flowers collected mid-day, diameter 78-88 mm, length 120-139 mm, outer perianth white with a broad greenish-yellow mid-stripe with red at tips, inner perianth white; stigma lobe number 9-12, cream; style cream; filaments white.