USA, Arizona, Coconino County, Grand Canyon National Park, along Royal Arch trail west of South Bass trail, on Esplanade, 12S 374812 E, 4006125 N, NAD 83/84
Frequent, stems 1, trunk short, stalk 1 m tall, inflorescence down 2/3 of stalk, racemose, flower 52 (l) x 45 (w) mm, tepal fusion 4 mm high, outer tepal 42 x 18 mm, cream-white with light green base, inner tepal 44 x 27 mm, cream-white, slightly light green at base, filament 12+7 mm high, slight bend, white, anthers yellow, ovary 18 mm, light green, style 8 mm, cream-white.