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Montana Field Guide

Montana Field Guides

One-flower Wintergreen - Moneses uniflora
Other Names:  Pyrola uniflora

Native Species

Global Rank: G5
State Rank: S4
C-value: 8

Agency Status


External Links

General Description
Small, caulescent, evergreen herbaceous subshrub from a slender, rhizome-like root. Stems herbaceous, unbranched, erect, to ca. 4 cm in flower. Leaves in whorls of 3, petiolate, suborbicular, to 2 cm long, dark green. Inflorescence: a solitary, nodding flower from a terminal bud on last year’s stem, becoming erect in fruit; peduncle elongating in fruit. Flowers perfect, regular, hypogynous, 5-merous, corolla saucer-shaped; calyx lobes oval, whitish; petals distinct, ovate, to 10 mm long, white; stamens 10; stigma star-shaped, with 5 erect, marginal lobes; style straight; ovary superior. Fruit a globose, 5-chambered capsule (Stickney in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Species Range
Montana Range Range Descriptions


Range Comments
Circumboreal south to CA, AZ, NM, SD, MN, WS, OH and NY (Stickney in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 237

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)

Moist, deeply shaded coniferous forests, often in moss of riparian spruce forest; valleys to subalpine (Stickney in Lesica et al. 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

  • Literature Cited AboveLegend:   View Online Publication
    • Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
  • Additional ReferencesLegend:   View Online Publication
    Do you know of a citation we're missing?
    • Culver, D.R. 1994. Floristic analysis of the Centennial Region, Montana. M.Sc. Thesis. Montana State University, Bozeman. 199 pp.
    • Fultz, J.E. 2005. Effects of shelterwood management on flower-visiting insects and their floral resources. M.Sc. Thesis. Bozeman, MT: Montana State University. 163 p.
    • Jones, W. W. 1901. Preliminary flora of Gallatin County. M.S. Thesis. Bozeman, MT: Montana State College. 78 pp.
    • Simanonok, M. 2018. Plant-pollinator network assembly after wildfire. Ph.D. Dissertation. Bozeman, MT: Montana State University. 123 p.
    • Simanonok, M.P. and L.A. Burkle. 2019. Nesting success of wood-cavity-nesting bees declines with increasing time since wildfire. Ecology and Evolution 9:12436-12445.
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Citation for data on this website:
One-flower Wintergreen — Moneses uniflora.  Montana Field Guide.  .  Retrieved on , from