Phacelia species

Click on the images below to see larger versions. 

Scientific Name Phacelia denticulata USDA PLANTS Symbol PHDE2
Common Name Rocky Mountain Scorpionweed, Rocky Mountain Phacelia ITIS Taxonomic Serial No. 31484
Family Boraginacea (Forget-me-not), formerly Hydrophyllaceae Univ. of Wyoming Reference Click Here
Description Life zones and habitat: Foothills to montane (5500 to 10000 ft.); sandy or rocky soils.
Plant: Erect annual to 2 to 16 inches tall with hairy, sticky stems.
Leaves: Pinnately-lobed leaves 1/2 inch to 3 inches long.
Inflorescence: Very small (less than 1/8-inch across) pale blue flowers in partially coiled racemes, petals with coarse, toothed edges, stamens not extending past the petals.
Bloom Period: June and July.
References: "Flora of Colorado" by Jennifer Ackerfield and Wyoming Natural Diversity Database State Species Abstract by Walter Fertig.
Notes: Rare plant found only in a few counties in Colorado and southern Wyoming.
BONAP Distribution Map

Colorado Status:
Native
Scientific Name Phacelia sericea USDA PLANTS Symbol PHSE
Common Name Silky Phacelia, Purple Fringe ITIS Taxonomic Serial No. 31592
Family Boraginacea (Forget-me-not), formerly Hydrophyllaceae Encyclopedia of Life Reference Click Here
Description Life zones and habitat: Montane to alpine (6500 to 13500 ft.); open areas, tundra and along roads and trails.
Plant: Erect, clustered perennial to 16 inches tall with stout, hairy stems.
Leaves: Deeply pinnately-divided stem and basal leaves with silvery hairs.
Inflorescence: Many small purple flowers in spike-like clusters up to 7 inches long, each flower with very long stamens extending past the petals.
Bloom Period: June to August.
References: "Flora of Colorado" by Jennifer Ackerfield and "Guide to Colorado Wildflowers" by G.K. Guennel.
Note: Two varieties exist in Colorado, and the photos below are likely var. sericea because of their locations near or above timberline.
BONAP Distribution Map

Colorado Status:
Native

Click here for white Phacelia.


© Tom Lebsack 2020