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

Callitriche stagnalis Scop.
pond water-starwort
Plantaginaceae (Mare's-tail family)
(Previously in Callitrichaceae)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #7385)

E-Flora BC Static Map
Distribution of Callitriche stagnalis
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Species Information

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Aquatic or semi-aquatic perennial rooting in mud; stems 3-15 cm long, leaf bases joined by small winged ridges.
All opposite, linear and single-nerved to broadly egg- or spoon-shaped and 3- to 5-nerved, 1 cm wide.
Inflorescence of tiny inconspicuous flowers borne with bracts, white; female flowers stalkless or short-stalked; styles sometimes reflexed.
Achene-like, 4, each 1-seeded, 1-1.5 mm long, conspicuously wing-margined all around, minutely pitted.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Slow-moving streams and ponds in the lowland, steppe and montane zones; infrequent in S BC, locally frequent in WC BC (Skeena River estuary); introduced from Europe.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Callitriche stagnalis

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) 0 0 0
Slope Gradient (%) 0 0 2
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
6 6 7
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: CWH(3)


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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References