collection location descriptions, and have not been 

 relocated. These include: 



Flathead Co. 1895. 

 Gallatin Co. 1897. 

 Gallatin Co. 1936. 

 Stillwater Co. 1937 



"Columbia Falls" 

 "Salesville" 



"15 miles north of Belgrade" 

 "Nye, MT; riverbottom" 



4. UNVERIFIED/UNDOCUMENTED REPORTS: None. 



E. HABITAT 



1. ASSOCIATED VEGETATION: The most common plant association 

 in which Cypripedium calceolus is found is the Picea 

 enqelmannii / Equisetum arvense h.t. Often the species is 

 restricted to the lower wet margin of this type grading into 

 wetland or riparian habitat. Many sites for the species 

 have a major deciduous canopy component including the 

 following trees: 



Populus tremuloides 

 Betula papyrifera 



Quaking aspen 

 Paper birch 



Forest understory species associates include: 



Cornus canadensis 

 Linnaea borealis 

 Clintonia unif lora 



Bunchberry 

 Twinf lower 

 Queen's cup 



Shrub cover varies and is often the local ecotone or 

 wetland community dominant, including species like: 



Cornus stolonifera 



Red osier dogwood 



Bog birch 



Bebb's willow 



Rocky Mountain maple 



Alder 



Among the other wetland plants with which it may be 

 associated are the following herbaceous species: 



Carex leptalea 

 Carex interior 



a sedge 

 a sedge 

 a groundsel 



Senecio pseudoaureus 

 Calamaqrostis canadensis blue joint 



Atypical examples of Cyprepedium calceolus habitat 

 include an Abies grandis \ Clintonia unif lora h.t., a 

 Pseudotsuqa menziesii association with Populus 

 tremuloides , and a willow thicket opening. 



2. TOPOGRAPHY: Cypripedium calceolus is consistently found in 



