Rhododendron tomentosum subsp. subarcticum Harmaja (Harmaja) G. Wallace
northern Labrador tea (marsh Labrador tea)
Ericaceae (Crowberry family)
Introduction to Vascular Plants
northern Labrador tea (marsh Labrador tea)
Ericaceae (Crowberry family)
Introduction to Vascular Plants
Photograph
Map
Distribution of Rhododendron tomentosum subsp. decumbens
Click here to view the full interactive map and legend
Introduction
In 2015, the BC Conservation Data Centre changed the name of this taxon from Rhododendron tomentosum ssp. subarcticum to Rhododendron tomentosum ssp. decumbens.
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Species Information
General:
Decumbent to erect shrubs; stems mostly 10-50 cm long/tall, rusty soft-hairy.
Leaves:
Alternate, evergreen, leathery, linear to narrowly oblong, 0.3-2.5 cm long, 1-3 (7) mm wide, tapering somewhat towards tip, margins strongly rolled under, rusty soft-hairy beneath; stalks 0.5-2 mm long.
Flowers:
In terminal umbrella-like clusters; flower stalks 0.8-2 cm long, with contorted reddish hairs, glandular, usually abruptly bent near the apex in fruit; corollas much as in L. groenlandicum; stamens usually 10, filaments hairy below the middle; calyces less than 1 mm long, fringed with long, reddish hairs, glandular.
Fruits:
Capsules, egg-shaped, 3-5 mm long, glandular.
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 Rhododendron tomentosum ssp. decumbens
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 |
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|
Avg |
Min |
Max |
|
| Elevation
(metres) |
1220 | 150 | 1741 |
| Slope
Gradient (%) |
19 | 0 | 95 |
|
Aspect (degrees) |
332 | 10 | 337 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
4 | 1 | 8 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
25 | ||
| Modal
BEC Zone Class |
BAFA | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BAFA(10), BWBS(4), CWH(1), MH(1), MS(1), SBS(1), SWB(7) | ||
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Source:
Klinkenberg 2013
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