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Silverleaf Phacelia, Timberline Phacelia, Mountain Phacelia - Phacelia hastata


Family: Hydrophyllaceae - Waterleaf family Genus Common Name: Phacelia Native Status: NativeDicot Perennial Herb
Phacelia hastata - Silverleaf Phacelia, Timberline Phacelia, Mountain Phacelia. Phacelia hastata may grow to 3 feet tall, although it is sometimes decumbent - the stems lying along the ground. It is a plant of mid to alpine elevations. These were photographed at 3,000' or higher.

Found in:
CA, CO, ID, MT, ND, NE, NV, OR, SD, UT, WA, WY

Note: I have some doubt about this identification - these photos may be of Phacelia heterophylla (Varileaf Phacelia.)

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Phacelia hastata

Distribution of Phacelia hastata in the United States and Canada:
USDA Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 16 Jan 2025). National Plant Data Team, Greensboro, NC 27401-4901 USA.

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Site: Boise National Forest, Ada County, ID Date: 2010-June-07Photographer: Gerald C. Williamson
Nikon D60
Tamron SP 90MM f/2.8 AF Macro
The tiny flowers of Silverleaf Phacelia exhibit a feature of many members of the Waterleaf family - stamens that extend well beyond the corolla. They are white to lavender, according to Idaho Mountain Wildflowers the color may be a function of elevation, being more likely lavender at higher elevations.
Phacelia hastata
Site: Boise National Forest, Ada County, ID Date: 2010-June-07Photographer: Gerald C Williamson
Nikon D60
Tamron SP 90MM f/2.8 AF Macro
The hairy leaves of Silverleaf Phacelia are usually lanceolate, although they may be more broadly elliptic. The basal leaves are sometimes lobed.
Click on the photo for a larger image
Phacelia hastata
Site: Boise National Forest, Ada County, ID Date: 2010-June-07Photographer: Gerald C Williamson
Nikon D60
The prominent blossom clusters of Phacelia hastata are tight coils that initially appear ball-shaped.
Click on the photo for a larger image
Phacelia hastata
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Phacelia hastata initially published on USWildflowers.com 2010-09-04; Updated 2015-06-24

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