Locality:
USA, Arizona, Maricopa County, Sierra Estrella Mountains and Wilderness Area, west flank, along jeep trail to Quartz Peak Trailhead, 12S NAD 27, 384396 E, 3673783 N.
Description:
Common on upper bajada (not lower), erect shrub, 1.5 m high x 1 m wide, stems erect to ascending, flowers 60(l) x 50(w) mm, 55x58 mm, 53x50 mm, 55x45 mm, outer perianth maroon-brown with glossy dark yellow margins, inner perianth glossy dark yellow, filaments dark maroon, anthers yellow, style cream-yellow, stigma lobes darker cream-yellow; dark yellow flowered form most common.