Desert yellow fleabane (Erigeron linearis) is a perennial with a thick base and a branching base.   It is sometimes called fine-leaved daisy or linear-leaved daisy.   Straight stems range from short to 30 cm tall.    Leaves are mostly basal, linear, often close to the stems, and hairy.   Terminal flowers are ray-and-disk pattern with bright yellow petals from a involucre bracts. 

The flowering season is usually in May and June on the dry slopes, rocky ridges,  and in the sagebrush grasslands.   After flowering, achenes form with short, hairy pappus, to be dispersed in the wind over summer and fall.