Fairy Slipper - Calypso bulbosa var. americana
MNPS Threat Rank
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Sheviak and Catling (2003, Fl. North America, Vol. 26) provide the following characters of variety americana to distinguish it from bulbosa:
Bristles of lip yellow, extensive; lamina white or suffused with pink, usually equaling or longer than horns.
Much of northern North America, running down the Rocky Mountains to Lincoln County (NM), and east to ME (Kartesz 2009).
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
- Additional ReferencesLegend: View Online Publication
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- Lesica, P., M. T. Lavin, and P. F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.