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Sheviak, C.J., 1983. United States Terrestrial Orchids: Patterns and Problems, in: Plaxton, E.H. (Ed.), Proceedings Of The North American Terrestrial Orchid Symposium, Mid-America Orchid Congress. Michigan Orchid Society.
Sheviak, C.J., 1982. Biosystematic Study of the Spiranthes cernua Complex, New York State Museum Bulletin. The University of the State of New York, Albany, New York.
Sheviak, C.J., 1982. Spiranthes. National List of Scientific Plant Names, USDA SCS-TP 159, vol. 1: 85-86; vol. 2: 214-215.
Sheviak, C.J., 1981. Endangered and Threatened Plants, Endangered and Threatened Species of Illinois. Springfield, Illinois.