Calochortus comosus A.Nelson Calochortus striatus, known by the common name alkali mariposa lily, is a species of mariposa lily native to California and into Nevada.

[5][8][9] This is a plant of alkaline soils, usually in wetland-riparian areas, in Shadscale scrub and chaparral habitats.

[6][10] Calochortus striatus erects a stem usually only a few centimeters tall but sometimes quite a bit taller, and a long basal leaf which may lie flat on the ground.

Pointed sepals form the base of the flower and above are three rounded petals, which may be slightly toothed and 2−3 centimeters long.

The capsule fruit is up to 5 centimeters long, producing flat seeds.