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The Tallgrass Prairie Orchids Platanthera leucophaea (Nutt.) Lindl. and Cypripedium candidum Muhl. ex Willd.: Some Aspects of Their Status, Biology, and Ecology, and Implications Toward Management


3.57369
Digitized
(Item)
Article
October 1983
Cypripedium candidum and Flatanthera leucophaea are characteristic tallgrass prairie orchids which have declined from agricultural use of their habitat and remain abundant only in large prairie remnants in the northwest portions of their range or occur locally in smaller prairie remnants and wetlands in the Great Lakes Region. These orchids exhibit specifically different life history strategies and adaptive characteristics. Cypripedium candidum is usually restricted to alkaline wet-mesic prairie or wetlands and spreads vegetatively, often producing large clones. Flatanthera leucophaea is more widespread and occupies a broader moisture continuum but does not spread vegetatively and usually occurs as solitary plants. Both are capable of massive seed production if pollinated but only P. leucophaea has expanded greatly into disturbed habitat, where it shows some characteristics of a fugitive species. Both are probably weakened or their life cycles disrupted by disturbances during the growing season yet occur occasionally in habitats under a disturbance regime. Under natural ccndi tiens they appear to respond favorably to dormant season fire. Applied research into their management requirements is needed.
3, 4, 14-37
Natural Areas Journal (published by)
English
Copyright statement:

This image may be protected by copyright law. Please contact the Sterling Morton Library ABOUT section for additional information.