E-Flora BC: Electronic Atlas of the Flora of British Columbia

Rhododendron lapponicum (L.) Wahlenb.
Lapland rosebay
Ericaceae (Crowberry family)

Introduction to Vascular Plants

© Alfred Cook  Email the photographer   (Photo ID #8470)

E-Flora BC Static Map
Distribution of Rhododendron lapponicum
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Species Information

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Dwarf, mat-forming shrub; stems prostrate to ascending, 5-30 cm long.
Alternate, evergreen or tardily deciduous, elliptic-oblong, 0.5-2 cm long, 0.2-0.8 cm wide, thick, scaly-glandular on both surfaces, tips blunt, dark green and wrinkled-looking above, brownish below, margins somewhat rolled under; stalks 2-3 mm long.
Showy, in few-flowered terminal clusters, fragrant; flower stalks 0.3-1.4 cm long, scaly-glandular; corollas deep purple, 8-12 mm long, 5-lobed; calyces persistent, 0.5-1.5 mm long, 5-lobed, fringed, dorsally scaly-glandular; stamens 5-10, filaments purple, glabrous; anthers rather short, oval.
Capsules, egg-shaped, 5-8 mm long, scaly-glandular.

Source: The Illustrated Flora of British Columbia

USDA Species Characteristics

Flower Colour:
Blooming Period:
Late Spring
Fruit/Seed characteristics:
Colour: Yellow
Present over the
Source:  The USDA

Habitat / Range

Dry fell-fields and stony slopes in the alpine zone; infrequent in extreme N BC; circumpolar, N to AK, YT, and NT, and E to NF; Eurasia.

Source: The Illustrated Flora of British Columbia


Ecological Framework for Rhododendron lapponicum

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) 710 1451 1770
Slope Gradient (%) 0 28 64
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 243 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 3 7
Modal Nutrient Regime
Number of field plots
 species was recorded in:
Modal BEC Zone Class
All BEC Zones (# of stations/zone) species was recorded in: BAFA(17), BWBS(1), SWB(15)


The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References