Betula pumila L.
bog birch (glandular birch; low birch; scrub birch; swamp birch)
Betulaceae (Birch family)
Introduction to Vascular Plants
bog birch (glandular birch; low birch; scrub birch; swamp birch)
Betulaceae (Birch family)
Introduction to Vascular Plants
SUBTAXA PRESENT IN BC
Betula pumila var. glandulifera
Species Information
General:
Deciduous shrub, 0.5-3 m tall; twigs densely hairy, slightly glandular.
Leaves:
Alternate, deciduous, thick and leathery in texture, 1-4 cm long, stalks less than 1 cm long, 4 or more lateral veins, with 10 or more coarse teeth on each side.
Flowers:
Male and female flowers in separate catkins 1.5-2 cm long; flowers emerging before or with the leaves; catkins breaking up at maturity.
Fruits:
Nutlets with narrow wings, 1/2 the width of the body of the nutlets.
Notes:
This species apparently hybridizes with B. pendula and B. papyrifera in our area (Brayshaw 1996b).
USDA Species Characteristics
Ecology
Ecological Framework for Betula pumila
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) |
983 | 410 | 1880 |
| Slope
Gradient (%) |
3 | 0 | 80 |
|
Aspect (degrees) |
327 | 22 | 360 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
6 | 0 | 8 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
80 | ||
| Modal
BEC Zone Class |
SBS | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BWBS(12), ESSF(6), ICH(4), IDF(1), MS(4), SBPS(15), SBS(29), SWB(1) | ||
|
Source:
Klinkenberg 2013
|
|||