Fairy Slipper - Calypso bulbosa var. occidentalis
MNPS Threat Rank
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Sheviak and Catling (2003, Fl. North America, Vol. 26) provide the following characters of variety bulbosa to distinguish it from americana:
Bristles of lip whitish or color of lamina, sparse; lamina commonly with reddish markings on dull white, usually shorter than horns.
AK south to CA and east to the Bitterroot Divide in ID (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)
"Moist to dry, shady coniferous forests; 0-1600 m" (Sheviak and Catling, 2003, Fl. North America, Vol. 26).
The following animal species have been reported as pollinators of this plant species or its genus where their geographic ranges overlap: Bombus centralis
, Bombus fervidus
, Bombus flavifrons
, Bombus frigidus
, Bombus melanopygus
, Bombus mixtus
, Bombus rufocinctus
, and Bombus occidentalis
- Literature Cited AboveLegend: View Online Publication
- Ackerman, J.D. 1981. Pollination biology of Calypso bulbosa var. occidentalis (Orchidaceae): a food-deception system. Madroño 28(3): 101-110.
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.