[TFG] Edgar T. Therry, ?1995
The Fern Guide: Northeasten and Midland United States and Adjacent Canada; [Original publication 1961]
[maps] Warning! The maps are automatically generated from the textual information, and the process does not always produce acceptable result; See about maps for more info.
If you have corrections, comments or
information to add into these pages, just send mail to
Keep in mind that the taxonomic information is copied from various sources, and may include many inaccuracies. Expert help is welcome.