USA, California, In cultivation at Desert Botanical Garden, Phoenix , AZ, USA (33deg 27'33'' N, 111deg 56'35'' W, 1100 feet elev.); acession number 1961 6924 0101. Originally collected by Ted Hutchinson s.n., from N side of Clark Mountains; syn. change to O. mojavensis to O. phaeacantha by TDO MAR 2000..
35.52524 -115.58578 +-10000m. WGS84
Flower diam. 50-68 mm; length 65-89 mm; stigma lobe # 6-8, green; outer perianth light yellow with greenish or light brown midstripe with light brown tips, inner perianth bright yellow with faint orange midstripe and orange at base. Stem blue-green or green. Spines white, with some having dark tips gray.