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about invasive species in Wisconsin.
to the invasive species rules and regulations email list.
an invasive species in your area.
invasive species publications.
Contact information
DNR invasive species staff

Invasive species photo gallery
European frogbit (Hydrocharis morsus-ranae)

Photo by Erich Haber
Photo by Erich Haber

* Note: Large versions of some of the photos are currently unavailable.

Visit Wisconsin Vascular Plants [exit DNR], a Web site presented by the Wisconsin Herbarium, to view photos and learn more about these plant species, as well as the rest of Wisconsin's Flora.

Last revised: Thursday, July 18, 2013