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

Equisetum scirpoides Michx.
dwarf scouring-rush (dwarf scouringrush)
Equisetaceae (Horsetail family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #70683)

E-Flora BC Static Map
Distribution of Equisetum scirpoides
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Species Information

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Perennial evergreen herb from a short, slender, brownish rhizome.
3-20 cm tall, 1-1.5 mm thick, kinked, without a central cavity, not branched, the sheaths with 3 teeth, the teeth dark with white margins.
0.5-1 cm long, with a pointed tip at the top.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry to wet coniferous forests, peat bogs, fens, swamps, and alpine tundra, from the montane to alpine zones; frequent in BC in and east of the Coast-Cascade Mountains; circumpolar, N to AK, YT and NT, E to NF and S to CT, NY, MI, WI, IL, SD, ID and WA; Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Equisetum scirpoides

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) 5 1095 2337
Slope Gradient (%) 0 12 205
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 7 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 4 8
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: BAFA(46), BWBS(504), CWH(7), ESSF(213), ICH(66), IDF(95), IMA(1), MS(196), PP(1), SBPS(81), SBS(143), SWB(121)


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

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General References