USA, Arizona, Graham County, Along Klondyke Road on lower bajadas of southeast flanks of Santa Theresa Mountains, north side of and overlooking Cottonwood Canyon, west side of road across from San Juan Hill.
31.932477 -110.134694 WGS 84
12S 581794E 3533278N
1339 meters
4392 ft
High desert-juniper open community, east-facing rocky slope.
Common on both sides of road, cloning, leaves green, flower stalk ca 6-3/4 m tall, 86 mm in diameter at eye level, lateral branches 25, down 6/10 of stalk, perpendicular-ascending, largest branch ca 40 cm long, yellow flowered form as common as purple-maroon form, ovary, neck, tube light glaucous-chartreuse, tepal lobes yellow, the outer lobes with conspicuous brown tip, filaments light yellow-chartreuse flushed with maroon, style light yellow(-chartreuse); tube bulbous, lobes wilting/reflexed pre and during anthesis, not clasping, ovary, tube, neck moderately angled, filaments flat, channeled; measurements after Gentry (1982) in mm, beginning anther dehiscence: tl=72, o=39x10, n=5, tu=14(l) x 12(w), outer tepal=18x5.5(base), 3.5(mid), inner tepal=15x5.5(base), 3.5(mid), fil ins=7, fil=57, a=21, sty=60; tl=76, o=40x10.5, n=5, tu=13(l) x 14(w), outer tepal=17x6.5(base), 3.5(mid), inner tepal=16x6(base), 3.5(mid), fil ins=6.5, 7, fil=58, a=20, sty=59; some stalks in population down, terminal branches of lateral branches and flowers snipped/chewed apparently by animals.