Carex petricosa Dewey
rock-dwelling sedge (rockdwelling sedge)
Cyperaceae (Sedge family)
Introduction to Vascular Plants
rock-dwelling sedge (rockdwelling sedge)
Cyperaceae (Sedge family)
Introduction to Vascular Plants
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SUBTAXA PRESENT IN BC
Carex petricosa var. petricosa
Species Information
General:
Perennial, densely tufted herb from short rhizomes; stems 10-60 cm tall, longer than the leaves.
Leaves:
Sheaths tight; blades flat or channeled, 0.5-3 mm wide, the lower ones reduced.
Flowers:
Spikes 4 to 7, the upper 1 to 3 with male flowers, sometimes with a few female flowers below, stalked, cylindrical, 2-4 cm long, the lower spikes 1 to 4, separate, erect to ascending or spreading, 2-4 cm long, with female flowers, or sometimes with male flowers towards the tips, the upper short-stalked, the lower long-stalked; bracts subtending the lowest spike long-sheathed, leaflike, 1.5-10 cm long, the blades much shorter than the inflorescence.
Fruits:
Perigynia lanceolate to egg-shaped, 4-5 mm long, 1-2 mm wide, sparsely to moderately short-hairy or merely fringed marginally, obscurely nerved, the beaks short, rough; female scales egg-shaped, slightly shorter than the perigynia, rounded to pointed, dark brown, the centres paler, the margins translucent; stigmas 3; achenes 3-angled, 0.8-1.2 mm long.
Illustration
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.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
Ecological Framework for Carex petricosa
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)
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) |
2095 | 2095 | 2095 |
| Slope
Gradient (%) |
15 | 15 | 15 |
|
Aspect (degrees) |
243 | 244 | 244 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 3 | 3 |
| Modal
Nutrient Regime
Class |
B | ||
| #
of field plots species was recorded in: |
1 | ||
| Modal
BEC Zone Class |
IMA | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
IMA(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Dry gravelly, often calcareous slopes and rock outcrops in the alpine zone; rare in NE and SE BC; N to AK, YT and NT, E to SW AB and S to MT.Status Information
Synonyms
Synonyms and Alternate Names:
Carex macrogyna Turcz. ex Steud.
Carex petricosa var. distichiflora (Boivin) Boivin
Carex petricosa var. petricosa Dewey