Cryptogramma stelleri (S.G. Gmel.) Prantl
slender rock-brake (fragile rockbrake)
Pteridaceae (Maidenhair Fern family)

Introduction to Vascular Plants


© Curtis Bjork     (Photo ID #24702)


E-Flora BC Static Map

Distribution of Cryptogramma stelleri
Click here to view the full interactive map and legend

Species Information

Deciduous perennial from a long creeping rhizome.
Thin, 3-15 cm long, from deeply pinnately lobed to 2-pinnate, segments of sterile leaves oblong, egg-shaped to fan-shaped; fertile leaves only slightly differentiated from the sterile ones, their segments narrower than in sterile leaves.

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 Cryptogramma stelleri

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)
1716 1670 1770
Slope Gradient (%)
67 50 80

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

204 180 260
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
2 2 3
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

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


Habitat and Range

Wet crevices in calcareous rocks from the steppe and montane to alpine zones; infrequent throughout BC; circumpolar, N to AK, YT and NT, E to AB and S to CO, UT, NV and OR, disjunct to ON and NF and S to ME, NH, PA, WV, IL and IA; N Eurasia.

SourceThe Illustrated Flora of British Columbia