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

Equisetum variegatum subsp. alaskanum Schleich. ex F. Weber & D. Mohr (A.A. Eaton) Hulten
northern scouring-rush
Equisetaceae (Horsetail family)

Introduction to Vascular Plants

Distribution of Equisetum variegatum subsp. alaskanum
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Species Information

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Illustration Source: The Illustrated Flora of British Columbia

General:
Perennial evergreen from a branched, shiny, blackish rhizome.

Stems:
10-50 cm tall, 1-3 mm thick, their central cavity 1/4 the stem diameter, unbranched, the sheaths with 3-14 teeth.

Cones:
5-7 mm long, pointed at the tip.

Notes:
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

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.

Status Information

Scientific Name	Origin Status	Provincial Status	BC List (Red Blue List)	COSEWIC
Equisetum variegatum ssp. alaskanum	Native	S5	Yellow	Not Listed
Equisetum variegatum ssp. variegatum	Native	S5	Yellow	Not Listed

BC Ministry of Environment: BC Species and Ecosystems Explorer, the authoritative source for conservation information in British Columbia.

Synonyms and Alternate Names

Equisetum variegatum var. alaskanum A.A. Eaton

Taxonomic and Nomenclatural Links

Flora North America treatment for Equisetaceae
Flora North America treatment for Equisetum variegatum
Genetic information (NCBI Taxonomy Database)
International Plant Names Index
Taxonomic Information from the World Flora Online
Integrated Taxonomic Information System

Additional Range and Status Information Links

Burke Museum of Natural History (Washington State records)
CalFlora
Consortium of Pacific Northwest Herbaria records
Jepson Interchange
NatureServe Explorer

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: 2022-08-07 10:06:41 PM ]

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