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

Callitriche hermaphroditica L.
northern water-starwort
Plantaginaceae (Mare's-tail family)
(Previously in Callitrichaceae)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #30171)

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Distribution of Callitriche hermaphroditica
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Species Information

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General:
Aquatic or semi-aquatic perennial rooting in mud; stems slender, 5-15 cm long, with widely spaced internodes.
Leaves:
All opposite; linear, 5-20 mm long, single-nerved, their bases not joined by a ridge or wing, light green.
Flowers:
Inflorescence of tiny, inconspicuous flowers borne without bracts, stalkless or shortly-stalked; styles soon deciduous, ascending.
Fruits:
Achene-like, 4, each 1-seeded, wingless, 1-2 mm long, egg-shaped, irregularly pitted.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Green
Blooming Period:
Late Summer
Fruit/Seed characteristics:
Colour: Green
Present over the Fall
Source:  The USDA

Habitat / Range

Slow-moving streams, lakes and sloughs in the lowland, steppe and montane zones; common in SW BC, less frequent in SC and SE BC; circumboreal, N to AK, YT and NT, E to NF and S to MN, MI, NM and CA; Eurasia.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Callitriche hermaphroditica

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

Minimum

Average

Maximum
Elevation (metres) 675 675 675
Slope Gradient (%) 0 0 0
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W] 		0
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric] 		5 5 5
Modal Nutrient Regime
Class		 B
Number of field plots
 species was recorded in:		 1
Modal BEC Zone Class
 IDF
All BEC Zones (# of stations/zone) species was recorded in: IDF(1)

Climate

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

Callitriche autumnalis L.

Taxonomic and Nomenclatural Links


Genetic information (NCBI Taxonomy Database)
 International Plant Names Index
 Taxonomic Information from the World Flora Online
 Integrated Taxonomic Information System

Additional Photo Sources

Images From CalPhoto
UT Austin's Native Plant Database
 Google Image Search
 Flickr Image Search

General References

Google Scholar Search
Family References
 General Botanical References for BC
Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2020. E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2025-01-20 7:05:21 AM ]
Disclaimer: The information contained in the E-Flora atlas pages is derived from expert sources as cited in each section. This information is scientifically based. E-Flora also acts as a portal to other sites via deep links. As always, users should refer to the original sources for complete information. E-Flora BC is not responsible for the accuracy or completeness of the original information.
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