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Montana Field Guide

Montana Field Guides

One-side Wintergreen - Orthilia secunda
Other Names:  Pyrola secunda, Ramischia secunda


Global Rank: G5
State Rank: S5

Agency Status
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BLM:
MNPS Threat Rank:
C-value:

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General Description
Rhizomatous, caulescent, evergreen, herbaceous subshrub from an elongate rhizome. Stems herbaceous, to 25 cm, unbranched. Leaves alternate, sometimes appearing subopposite or pseudo-whorled, petiolate; blades to 5 cm long, widest below the midlength. Inflorescence of few to many flowers borne on a terminal, one-sided raceme, arching at anthesis, erect in fruit. Flowers hypogynous, 5-merous, nodding; calyx lobes rounded, whitish; corolla cup-shaped; petals distinct, elliptic, to 5 mm long, white to greenish tinged; stamens 10; stigma shield-shaped, 5-lobed; style straight; ovary superior. Fruit a nodding, globose, 5-chambered capsule (Stickney in Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Diagnostic Characteristics
Often included in the genus Pyrola, but distinguished by raceme one-sided (vs. cylindrical); corolla campanulate, longer than broad (vs. subglobose or short-campanulate, broader than long).

Species Range
Present
 


Range Comments
Circumboreal; in North America, Greenland and Newfoundland to Alaska, south to New Jersey, Virginia, Pennsylvania, Indiana, Ohio, northern Illinois, Iowa, Nebraska, New Mexico, Arizona, and California. Historically reported in Virginia, Ohio, and Delaware; extirpated in Indiana. Isolated populations in the Sierra Madre Oriental and in the Flora Neotropica area in Jalisco, the high mountains of south-central Mexico (the Neovolcanic Belt and southern Sierra MAdre Oriental), and south of the Isthmus of Tehuantepec in the mountains of Chiapas and western Guatemala at elevations of (1850-) 2000-4038 m.

Summary of Observations Submitted for Montana
Number of Observations: 126

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Relative Density

Recency

 

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



Habitat

References
  • Additional ReferencesLegend:   View Online Publication
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    • Fernald, M.L. 1970. Gray's manual of botany. 8th ed. Van Nostrand Company, New York.
    • Gleason, H. A., and A. Cronquist. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. New York Botanical Garden, Bronx, NY. 910 pp.
    • Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
    • Martin, W.C., and C.R. Hutchins. 1980-1981. A flora of New Mexico. 2 vols. J. Cramer, in der A.R. Gantner Verlag, K.G., Vaduz, Liechtenstein. 2591 pp.
    • McCance, R.M., Jr., and J.F. Burns, eds. 1984. Ohio endangered and threatened vascular plants: Abstracts of state-listed taxa. Division Natural Areas and Preserves, Ohio Dept. Natural Resources, Columbus. 635 pp.
    • Porsild, A.E., and W.J. Cody. 1980. Vascular plants of continental Northwest Territories, Canada. National Museum Natural Sciences, National Museums Canada, Ottawa. 667 pp.
    • Weber, W.A. 1990. Colorado Flora: eastern slope. Univ. Press Colorado, Niwot. 396 pp.
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Citation for data on this website:
One-side Wintergreen — Orthilia secunda.  Montana Field Guide.  .  Retrieved on , from