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

Equisetum variegatum subsp. variegatum
northern scouring-rush
Equisetaceae (Horsetail family)

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #15757)

E-Flora BC Static Map
Distribution of Equisetum variegatum subsp. variegatum
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Species Information

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Perennial evergreen from a branched, shiny, blackish rhizome.
10-50 cm tall, 1-3 mm thick, their central cavity 1/4 the stem diameter, unbranched, the sheaths with 3-14 teeth.
5-7 mm long, pointed at the tip.
A hybrid with E. hyemale (E. x trachyodon A. Braun) was collected on the Queen Charlotte Islands (Calder & Taylor 1968). A hybrid with E. laevigatum (E. x nelsonii [A. A. Eaton] Schaffn.) has not been reported from BC, but can be expected.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Wet lake shores, streambanks, fens, meadows, clearings and roadsides from the lowland and steppe to subalpine and (rarely) alpine zones; frequent in coastal (ssp. alaskanum) and interior BC (ssp. variegatum); circumpolar, N to AK, E to NF and S to NH, CT, PA, MI, MN, WY, CO, UT, ID and OR; Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Equisetum variegatum ssp. variegatum

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) 1594 1594 1594
Slope Gradient (%) 2 2 2
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
7 7 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: ESSF(1)


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

Equisetum variegatum var. variegatum Schleich. ex F. Weber & D. Mohr

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References