Calochortus ambiguus, the Arizona mariposa lily or doubting mariposa lily, is a perennial plant in the lily family (liliaceae) that grows at higher elevations of the Sonoran Desert regions of Arizona, western New Mexico, southern Utah, and Sonora.Sonoran Desert Wildflowers, Richard Spellenberg, 2nd ed., 2012,
Calochortus ambiguus is a bulb-forming herb. Flowers are white or very pale lavender, with a green center and reddish-purple anthers.Flora of North America Vol. 26 Page 139 Calochortus ambiguus (M. E. Jones) Ownbey, Ann. Missouri Bot. Gard. 27: 505. 1940. Biota of North America Program 2013 county distribution map
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Firefly Forest, Southeastern Arizona Wildflowers and Plants, Calochortus ambiguus – Doubting Mariposa Lily/ Pacific Bulb Society, Calochortus Species One photos of several species Vascular Plants of the Gila Wilderness, Calochortus ambiguus (M.E. Jones) M. Ownbey (Doubting Mariposa Lily)