Santa Susana Pass Trail

Slender Mariposa Lily (Calochortus clavatus var. gracilis)

http://en.wikipedia.org/wiki/Calochortus_clavatus

Calochortus clavatus is a species of mariposa lily known by the common name clubhair mariposa lily. It is endemic to California where it is found in forests and on chaparral slopes.

Source: Wikipedia