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

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

Introduction to Vascular Plants

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

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

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.

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