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

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

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #56305)

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Distribution of Moneses uniflora
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Species Information

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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.

Source: The Illustrated Flora of British Columbia

Habitat / 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.

Source: The Illustrated Flora of British Columbia


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) 0 928 2500
Slope Gradient (%) 0 23 410
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
0 348 360
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
0 4 8
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: BWBS(184), CWH(721), ESSF(540), ICH(570), IDF(56), MH(51), MS(155), SBPS(38), SBS(388), SWB(33)


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.

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.

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References