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

Polystichum kruckebergii W.H. Wagner
Kruckeberg's hollyfern
Dryopteridaceae (Wood Fern family)

Introduction to Vascular Plants

© Jay Akerley  Email the photographer   (Photo ID #50310)

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Distribution of Polystichum kruckebergii
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Species Information

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Evergreen perennial arising from a short, stout rhizome.
Lanceolate, 10-40 cm long, 3-7 cm wide, 1-pinnate, with short stipes; pinnae oblong, deeply cut, with ascending teeth, pinnae twisted out of plane of blade.

Source: The Illustrated Flora of British Columbia

Habitat / Range

Dry to mesic ultramafic rock outcrops and talus in the montane and subalpine zones; rare in SW BC (Cascade Mountains and southern Coastal Ranges, disjunct to the Cassiar Mountains); S to MT, UT, ID and CA.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Polystichum kruckebergii

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) 1023 1497 2200
Slope Gradient (%) 25 68 95
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 310 325
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 4 4
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: ESSF(1), MS(1), SWB(2)


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

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General References