Moneses uniflora (L.) A. Gray
single delight (one-flowered wintergreen)
Ericaceae (Crowberry family)
(Previously in Pyrolaceae)

Introduction to Vascular Plants


© Bryan Kelly-McArthur     (Photo ID #56305)


E-Flora BC Static Map

Distribution of Moneses uniflora
Click here to view the full interactive map and legend

Species Information

Perennial, slightly woody herb from slender, rhizome-like root; stems erect or nearly so, 3-10 cm tall.
Evergreen, more or less basal, egg-shaped, 1-4 cm long including the short stalks, 0.6-2 cm wide, thin, veiny, finely-toothed, tips rounded.
Inflorescence a single, terminal, nodding flower, 1.3-2.5 cm wide, fragrant; flower stem pimpled above, bracts 1 or 2, about midlength on naked stem; petals 5, distinct, widely spreading, waxy white to pinkish, lance egg-shaped, 7-11 mm long, entire or minutely-fringed; sepals 5, distinct, 1.5-3 mm long, usually bent back, margins ragged-fringed; styles 2-4 mm long, straight; stigmas large, 5-lobed; stamens 10.
Capsules, nearly globe-shaped, 5-8 mm wide.

SourceThe Illustrated Flora of British Columbia


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.


Ecological Framework for Moneses uniflora

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)
928 0 2500
Slope Gradient (%)
23 0 410

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

348 0 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
4 0 8
Modal Nutrient Regime
# of field plots
 species was recorded in:
Modal BEC Zone Class

All BEC Zones (# of stations/zone) species was recorded in

BWBS(184), CWH(721), ESSF(540), ICH(570), IDF(56), MH(51), MS(155), SBPS(38), SBS(388), SWB(33)

Habitat and Range

Mesic forests in the montane zone; infrequent in SC BC, frequent elsewhere in BC; circumboreal, N to AK, YT, and NT, E to NF and S to CA, NM, MN, and PA; Eurasia.

SourceThe Illustrated Flora of British Columbia


Synonyms and Alternate Names:
Moneses uniflora subsp. reticulata (Nutt.) Calder & Roy L. Taylor
Moneses uniflora var. reticulata (Nutt.) S.F. Blake
Moneses uniflora var. uniflora
Pyrola uniflora L.