Phacelia linearis (Pursh) Holz.
thread-leaved phacelia (threadleaf phacelia)
Hydrophyllaceae (Waterleaf family)

Introduction to Vascular Plants

Photograph

© Bryan Kelly-McArthur     (Photo ID #86681)

Map

E-Flora BC Static Map

Distribution of Phacelia linearis
Click here to view the full interactive map and legend

Species Information

General:
Annual herb from a taproot; stems simple or branched, erect, densely short-hairy, 10-50 cm tall.
Leaves:
Basal leaves few, reduced, soon deciduous; stem leaves alternate, linear to narrowly lanceolate, entire except for 1-4 divergent lobes which may occur below the middle, appressed stiff-hairy, 1.5-11 cm long.
Flowers:
Inflorescence a crowded, terminal cluster; corollas lavender-blue, 6-10 mm long, 8-18 mm wide; calyces fringed with bristly hairs, the lobes linear; stamens slightly exserted, sparsely bearded.
Fruits:
Capsules; seeds 6-15, coarsely pitted, 1.5 mm long.

Source:  The Illustrated Flora of British Columbia

Illustration

If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.

Ecology

Ecological Framework for Phacelia linearis

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

Avg

Min

Max
Elevation (metres)
 691 250 1816
Slope Gradient (%)
 33 0 102

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

 195 4 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		2 0 6
Modal Nutrient Regime
Class
 C
# of field plots
 species was recorded in:
 304
Modal BEC Zone Class
 BG

All BEC Zones (# of stations/zone) species was recorded in

 BG(106), ESSF(1), ICH(8), IDF(78), MS(5), PP(94)

Habitat and Range

Mesic to dry meadows, grasslands, shrublands and open forests in the lowland, steppe and lower montane zones; common in SC and SE BC; infrequent on S Vancouver Island and the Gulf Islands; E to SW AB and S to WY, UT and N CA.

Source:  The Illustrated Flora of British Columbia

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