Draba porsildii G. Mulligan
Porsild's draba (Porsild's whitlow-grass)
Brassicaceae (Mustard family)
Introduction to Vascular Plants
Porsild's draba (Porsild's whitlow-grass)
Brassicaceae (Mustard family)
Introduction to Vascular Plants
Species Information
General:
Tufted perennial herb from a taproot; stems 2-6.5 cm tall, glabrous to sparsely hairy.
Leaves:
Usually all basal, oblanceolate, 0.3-1.2 cm long, 1.5-2 mm wide, hairy with simple, branched, crosslike, and starlike (5-8 rays) hairs, entire; stem leaves lacking or sometimes 1.
Flowers:
Racemes 3- to 6-flowered; petals white, 2-3 mm long; sepals 1.5-2 mm long.
Fruits:
Silicles, 4-8 mm long, 2-3 mm wide, egg-shaped, glabrous; fruiting stalks shorter than silicles; styles 0.25 mm long; seeds 5-9, about 1 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 Draba porsildii
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) |
2300 | 2077 | 2615 |
| Slope
Gradient (%) |
6 | 0 | 15 |
|
Aspect (degrees) |
267 | 180 | 355 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
2 | 1 | 3 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
3 | ||
| Modal
BEC Zone Class |
IMA | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
AT(1), IMA(2) | ||
|
Source:
Klinkenberg 2013
|
|||