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

Polystichum andersonii Hopkins
Anderson's hollyfern
Dryopteridaceae (Wood Fern family)

Introduction to Vascular Plants

© Chris Sears  Email the photographer   (Photo ID #390)

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Distribution of Polystichum andersonii
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Species Information

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General:
Perennial with deciduous or overwintering leaves arising from a short stout rhizome.
Leaves:
Broadly lanceolate, 30-100 cm long, 5-30 cm wide, 1-pinnate, with one or several bulbils at the base of upper pinnae; pinnae deeply cut, but their segments attached to the body of the pinnae with a broad base, minutely sawtoothed-spiny with teeth ascending.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to moist coniferous forests, lava flows and talus scree in the lowland to subalpine zones; frequent in coastal NW BC, infrequent elsewhere; N to AK and S to MT, ID and OR.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Polystichum andersonii

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) 10 547 1411
Slope Gradient (%) 0 23 81
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
3 349 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 4 5
Modal Nutrient Regime
Class
C
Number of field plots
 species was recorded in:
15
Modal BEC Zone Class
ICH
All BEC Zones (# of stations/zone) species was recorded in: CWH(6), ICH(8), SBS(1)

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.

Synonyms and Alternate Names

Polystichum braunii subsp. andersonii (Hopkins) Calder & Roy L. Taylor

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References