ACKNOWLEDGEMENTS 



The access permission and kindness of all landowners whose property was visited in this study are 

 acknowledged with deep appreciation. Special thanks are given the landowner at the site where 

 Spiranthes diluvialis was first discovered for permission to conduct annual monitoring. 



Taxonomic consultation and chromosome analysis were graciously provided by Dr. Charles Sheviak 

 (New York Biological Survey). Information and assistance provided by Walter Fertig (Wyoming 

 Natural Diversity Database) and Dr. Lawrence Magrath (University of Oklahoma) initially helped 

 identify the possibility of Spiranthes diluvialis occurring in Montana. The taxonomic expertise of 

 Dr. Anton Reznicek, Dr. Rupert Bameby, and Dr. Jim Ratter in determining and verifying 

 associated species is also acknowledged, as is the associated species documentation provided by 

 Peter Lesica. 



The synthesis of listing and recovery information and the coordination promoted by the U. S. Fish 

 and Wildlife Service fostered rangewide information exchange. The author acknowledges the 

 contributions of all whose works are cited in this report, and thanks the following individuals for 

 sending Spiranthes diluvialis information: Jeff Carroll (Bureau of Land Management - Wyoming), 

 Walter Fertig, John Gamon (Washington Natural Heritage Program), Dr. Lucy Jordan (U. S. Fish 

 and Wildlife Service), Bob Moseley (Idaho Conservation Data Center), Lynn Riedel (Dinosauer 

 National Monument), Susan Spackman (Colorado Natural Heritage Program), and Gerry Steinaeur 

 (Nebraska Natural Heritage Program). Visits to Idaho sites were made in conjunction with a tour 

 jointly led by Edna Rey-Vizgirdas (U.S. Fish and Wildlife Service) and Bob Moseley (Idaho 

 Conservation Data Center). 



Permission to reproduce illustrations of Spiranthes diluvialis was provided by the illustrator, 

 Carolyn Crawford, and close-up photographs of Spiranthes diluvialis by the photographer, Kristi 

 DuBois. These graphics were scarmed and printed by Arme Dalton (Montana Natural Heritage 

 Program) who also produced the state distribution map. The rangewide distribution map was 

 provided by Dr. Ronald Hartman (University of Wyoming). Montana element occurrences were 

 processed wath the assistance of Arme Dalton, Katie Schletz and other data management staff. 

 Stratification of the vegetation sampling data was run with help from Steve Cooper and Scott Lee- 

 Chadde (Montana Natural Heritage Program). The coordination of soils analysis between states was 

 provided by Gerry Steinauer and the tabulation of soils results was provided by Terri Hildebrand 

 (contractor to Nebraska Game & Parks Commission). 



Use of the Montana Department of Natural Resource and Conservation aerial photos and site visits 

 to state lands were coordinated through the Central Land Office and the Dillon Unit Office, by 

 Robert and Stanley Vlahovich, respectively. The well-organized aerial photographs and the 

 helpfulness of Farm Service Agency persoimel in the Bozeman, Deerlodge, Dillon and Whitehall 

 offices made the extensive review of aerial photographs possible. This study was conducted as two 

 challenge cost-share projects in 1996 and 1997 with the support of the U.S. Fish and Wildlife 

 Service and the Montana Natural Heritage Program. 



