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

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

Introduction to Vascular Plants

© Curtis Bjork  Email the photographer   (Photo ID #15949)

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Distribution of Polystichum imbricans
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SUBTAXA PRESENT IN BC
Polystichum imbricans ssp. imbricans

Species Information

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General:
Evergreen perennial arising from a short, stout rhizome.
Leaves:
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

Ecology

Ecological Framework for Polystichum imbricans

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

Minimum

Average

Maximum

Elevation (metres) 1105 1110 1115
Slope Gradient (%) 30 50 85
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
185 213 238
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 4 4
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
3
Modal BEC Zone Class
MH
All BEC Zones (# of stations/zone) species was recorded in: MH(3)

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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References