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

Polystichum imbricans (D.C. Eaton) D.H. Wagner subsp. imbricans
narrow-leaved sword fern (narrowleaf swordfern)
Dryopteridaceae (Wood Fern family)

Introduction to Vascular Plants

© Jamie Fenneman  Email the photographer   (Photo ID #3922)

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Distribution of Polystichum imbricans subsp. imbricans
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Species Information

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Evergreen perennial arising from a short, stout rhizome.
Lanceolate, 20-70 cm long, 3-15 cm wide, 1-pinnate; pinnae oblong, overlapping and twisted 45degree or more to the plane of blade, with spreading teeth.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry rock outcrops, forest margins and open forests in the lowland zone; infrequent in BC on SE Vancouver Island, adjacent mainland coast, and lower Fraser River Valley; S to CA.

Source: The Illustrated Flora of British Columbia


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

Polystichum munitum subsp. imbricans (D.C. Eaton) Munz
Polystichum munitum subsp. nudatum (D.C. Eaton) Ewan
Polystichum munitum var. imbricans (D.C. Eaton) Maxon

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References