Phacelia denticulata
(Rocky Mountain Scorpionweed)
Family:
Hydrophyllaceae (Waterleaf)
   
Rocky Mountain Scorpionweed is an uncommon species that grows on sandy or gravelly sites in the foothills. Flowers are pale purple. Margins of the petals are sharply toothed. Stamens do not stick out from the flower, separating this species from many other Phacelia sp.  Sepals have glandular hairs and the plants have an odor.  Leaves are pinnately lobed.  Plants are about 12-inches tall.

Look for Rocky Mountain Scorpionweed amongst Mountain Mahogany along the eastern portion of the Towhee Trail at Soapstone Natural Area in northern Larimer County.

Compare to Phacelia alba, which has stamens sticking out from the flowers and leaves which are more deeply and narrowly lobed.

Compare ot Phacelia heterophylla, which has stamens sticking out from the flowers and gray-green leaves which are not pinnately lobed (though lower leaves may have a pair of lobes at the base)

Vegetation zone:  Foothills
Time of bloom:  July - August
Origin:  Native
Eastern Colorado Wildflowers