Linaria vulgaris
(Yellow Toadflax)
Family: Scrophulariaceae (Figwort)
Noxious Weed!
         
Compare to L. genistifolia (Dalmatian toadflax), which has broad, clasping leaves.   Also, L. vulgaris tends to grow at higher elevations than L. genistifolia.


Vegetation zone:  Foothills, Montane
Time of bloom:  June - September
Origin:  Introduced   Noxious Weed
Eastern Colorado Wildflowers