Tragopogon dubius (Yellow Salsify)
Family: Asteraceae (Sunflower)
Tragopogon dubius looks like a large dandelion. Leaves are linear and stalks grow as tall as two feet. T. dubius has long phyllaries that stick out beyond the flowers. Compare with T. pratensis, which has phyllaries equal to the length of the flowers.

Vegetation zone:  Plains, Foothills
Time of bloom:  May - August
Origin:  Introduced
Eastern Colorado Wildflowers