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

Introduction to Vascular Plants


© Chris Sears     (Photo ID #390)


E-Flora BC Static Map

Distribution of Polystichum andersonii
Click here to view the full interactive map and legend

Species Information

Perennial with deciduous or overwintering leaves arising from a short stout rhizome.
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.

SourceThe Illustrated Flora of British Columbia


If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.


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




Elevation (metres)
547 10 1411
Slope Gradient (%)
23 0 81

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

349 3 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 3 5
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

CWH(6), ICH(8), SBS(1)

Habitat and 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.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Polystichum braunii subsp. andersonii (Hopkins) Calder & Roy L. Taylor