Athyrium distentifolium Tausch ex Opiz
alpine lady fern
Dryopteridaceae (Wood Fern family)

Introduction to Vascular Plants

Photograph

© Jim Riley     (Photo ID #415)


Map

E-Flora BC Static Map

Distribution of Athyrium distentifolium
Click here to view the full interactive map and legend

Species Information

General:
Deciduous perennial arising from a short, stout rhizome.
Leaves:
Numerous, upright, narrowly elliptic or lanceolate, 20-70 cm long, 5-25 cm wide, 3-pinnate, ultimate segments oblong, minutely round-toothed.
Notes:
Fuchs (1974) showed that the name, Athyrium alpestre (Hoppe) Ryland is a later homonym of A. alpestre Clairv. and must be rejected.

SourceThe Illustrated Flora of British Columbia

Ecology

Ecological Framework for Athyrium distentifolium

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

Avg

Min

Max

Elevation (metres)
1515 46 2289
Slope Gradient (%)
39 2 85

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

164 8 290
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
3 0 7
Modal Nutrient Regime
Class
A
# of field plots
 species was recorded in:
14
Modal BEC Zone Class
ESSF

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

AT(1), CMA(1), CWH(2), ESSF(7), ICH(3)

Habitat and Range

Dry to moist talus slopes, rocks and rocky meadows in the subalpine and alpine zones; infrequent in S BC, rare northward; N to AK, YT and NT, disjunct in PQ and NF and S to CO, UT, NE and CA.

SourceThe Illustrated Flora of British Columbia