Pyrola grandiflora Radius
arctic wintergreen (largeflowered wintergreen)
Ericaceae (Crowberry family)
(Previously in Pyrolaceae)

Introduction to Vascular Plants

Photograph

© Ryan Batten     (Photo ID #23929)


Map

E-Flora BC Static Map

Distribution of Pyrola grandiflora
Click here to view the full interactive map and legend

Species Information

General:
Perennial herb from slender rhizome; flowering stems 5-25 cm tall, single.
Leaves:
Evergreen, basal, leathery, lustrous, oval to egg-shaped or circular, the blades 1-4.5 cm long, 1-5 cm wide, from nearly heart-shaped to blunt, rounded, or pointed at base, blunt to rounded at tip, nearly entire to toothed or undulating on margin, green above, often reddish beneath, often whitened along the veins; stalks 1-8 cm long.
Flowers:
Inflorescence a 4- to 11-flowered terminal, cylindric raceme, with dry, brown, membranous, broadly lanceolate bracts, the flowers weakly bilaterally symmetric; flower stalks 2-8 mm long; petals broadly rounded, creamy white with some pink, 7-12 mm long; sepals petal-like, purplish with irregular, membranous margins, elliptic-oblong, 2-4 mm long, distinctly veined; anthers about 2 mm long, rounded and rather blunt at the base, yellow to pink, the pores on very short tubes; filaments slender, almost thread-like at the summit; styles up to 6 mm long at maturity, bent at the base, with a collar below the stigma.
Fruits:
Capsules, globe-shaped, about 6 mm wide.

SourceThe Illustrated Flora of British Columbia

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.

Ecology

Ecological Framework for Pyrola grandiflora

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)
1014 7 2080
Slope Gradient (%)
11 0 91

Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]

239 5 356
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 1 7
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

BAFA(7), BWBS(10), CWH(1), ESSF(9), ICH(12), IDF(2), SBPS(9), SBS(16), SWB(8)

Habitat and Range

Moist heath, turfy tundra, thickets, and mossy forests in the montane to alpine zones; infrequent in N BC; circumpolar, N to AK, YT, and NT and E to NF; N Eurasia.

SourceThe Illustrated Flora of British Columbia

Synonyms

Synonyms and Alternate Names:
Pyrola borealis Rydb.
Pyrola canadensis Andres
Pyrola gormanii Rydb.
Pyrola grandiflora var. canadensis (Andres) Porsild
Pyrola grandiflora var. gormanii Rydb.
Pyrola occidentalis R. Br. ex D. Don