Calochortus nuttallii, also known as the sego lily, is a bulbous perennial plant that is endemic to the Western United States.

[3] Plants have 1 to 4 flowers, each with 3 white petals (and 3 sepals) which are tinged with lilac (occasionally magenta) and have a purplish band radiating from the yellow base.

[6] The yellow petaled form was also observed in a "super bloom" near the Orange Cliffs District of Glen Canyon National Recreation Area, on the north side of the Colorado River near Hite, Utah in May 2019.

Bulbs were roasted, boiled, or made into a porridge by the Hopi, Havasupai, Navajo, Southern Paiute, Gosiute, and Ute peoples.

[19] However, the USDA Natural Resources Conservation Service strongly cautions foragers that the many highly toxic plants commonly called deathcamas grow in the same habitat as Calochortus nuttallii and can be easily confused with it when flowers are not present.