E-Flora BC: Electronic Atlas of the Flora of British Columbia

Phacelia hastata Douglas ex Lehm.
silverleaf phacelia
Hydrophyllaceae (Waterleaf family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #83977)

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Distribution of Phacelia hastata
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Phacelia hastata var. hastata

Species Information

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Perennial herb from a branched stem-base and a stout taproot; stems ascending to nearly erect, several, silvery hairy, 20-50 cm tall.
Basal leaves tufted, broadly lanceolate, stalked, 6-12 cm long, usually silvery-hairy; stem leaves similar, alternate, sometimes with a pair of small basal lobes, progressively reduced, becoming unstalked, silvery-hairy, usually bristly as well.
Inflorescence a several-coiled, 1-sided, short, compact cluster; corollas whitish to lavender or dull purple, 4-7 mm long and wide; calyces hairy, the lobes linear; stamens strongly exserted and hairy near the middle.
Capsules, 2-chambered; seeds 1-3, pitted, 1.5-2.5 mm long.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Mid Spring
Fruit/Seed characteristics:
Colour: Brown
Present from Spring to Summer
Source:  The USDA

Habitat / Range

Dry meadows, rocky slopes, and forest openings in the steppe to subalpine zones; common in SC and SE BC; E to SW AB and S to NE, CO and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Phacelia hastata

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class




Elevation (metres) 324 1285 2488
Slope Gradient (%) 0 50 100
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
5 189 340
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 1 6
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: AT(16), BG(23), ESSF(53), ICH(8), IDF(39), MS(40), PP(37)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Phacelia hastata subsp. hastata Lehm. [superfluous autonym]

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References