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

Collomia heterophylla Douglas ex Hook.
vari-leaved collomia (variableleaf collomia)
Polemoniaceae (Phlox family)

Introduction to Vascular Plants

© Jeanne Ross  Email the photographer   (Photo ID #10934)

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Distribution of Collomia heterophylla
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Species Information

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Annual or biennial herb from a taproot; stems ascending to erect, simple or much-branched with several stems from the base, slimy-hairy especially above, 5-40 cm tall.
Alternate, mostly stalked, usually hairy and slightly glandular; lower leaves 1-2 times pinnately cleft, the blades to 3.5 cm long and 2 cm wide; middle and upper leaves progressively less divided upwards, the uppermost leaves (below the flower clusters) smaller than the others, nearly unstalked, elliptic, merely toothed or entire.
Inflorescence of dense, head-like, terminal (and sometimes axillary) clusters; corollas pink, lavender or white, the slightly flaring tube 8-17 mm long, spreading to five, 3- 4 mm long lobes; calyces 5-8 mm long, the five lobes narrowly lanceolate.
Capsules, with 2- or 3-seeded chambers; seeds becoming sticky when moistened.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic forest openings, sandy or gravelly clearings, and streambanks in the lowland zone; locally frequent on S Vancouver Island, infrequent on the adjacent coast and lower Fraser Valley; S to ID, WY, AZ and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Collomia heterophylla

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) 130 299 536
Slope Gradient (%) 0 22 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
112 155 337
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 1 2
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: CDF(1), CWH(9)


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 cool temperate & cool mesothermal.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References