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Montana Field Guide

Montana Field Guides

Spotted Coralroot - Corallorhiza maculata var. occidentalis

Native Species

Global Rank: G5T3T5
State Rank: S4

Agency Status


External Links

General Description
See species description.

Diagnostic Characteristics
Variety occidentalis differs from the typical variety by the following combination of characters: Middle lobe of lip distinctly expanded, ratio of widths of dilated part to base of middle lobe more than 1.5; floral bracts averaging 1–2.8 mm (Magrath and Freudenstein, 2003, Fl. North America Vol. 26).

Species Range

Range Comments
Widespread but irregular across much of Canada and the USA (Kartesz 2009).

Observations in Montana Natural Heritage Program Database
Number of Observations: 5

(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)

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Citation for data on this website:
Spotted Coralroot — Corallorhiza maculata var. occidentalis.  Montana Field Guide.  .  Retrieved on , from