USA, Arizona, Coconino County, Grand Canyon National Park, near origin of most northern spring/falls of Roaring Springs Falls, 406914E, 4005949N, NAD 27.
36.193874 -112.035347 +-500m.
UTM: 12R 406914E 4005949N
1557 meters (5107ft)
Desert scrub/riparian, west-facing slope
Quercus turbinella, Q. gambelii.
Locally common, clone wide, ca 4 m wide and long, flowers 70(l)x75(w) mm, 65x70 mm, 66x60 mm, 62x63 mm, 55x60 mm, hypanthium narrow to broad, outer perianth yellow with green-red midstripe and apices, inner perianth yellow with slight red to darker yellow midstripe, reddish-rose within and darker towards base and midstripe, filaments white-cream, anthers light yellow-cream, style white, stigma lobes dark green.