There is an interesting and important article on the U.S. Fish and Wildlife Service website in the Endangered Species category about Prairie Fringed Orchids, Platanthera leucophaea (eastern prairie fringed orchid); Platanthera praeclara (western prairie fringed orchid).
It explains why the Prairie Fringed Orchids are threatened, what is being done to prevent their extinction, and what we can do to help prevent the extinction of the species.
The article includes photos of these lovely orchids. You can see it by clicking on this link.