Equisetum variegatum subsp. alaskanum Schleich. ex F. Weber & D. Mohr (A.A. Eaton) Hulten
northern scouring-rush
Equisetaceae (Horsetail family)
Introduction to Vascular Plants
northern scouring-rush
Equisetaceae (Horsetail family)
Introduction to Vascular Plants
Map
Distribution of Equisetum variegatum subsp. alaskanum
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Species Information
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.
Habitat and 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.Synonyms
Synonyms and Alternate Names:
Equisetum variegatum var. alaskanum A.A. Eaton