Narrow fen at base of Quercus sp. Dominated upland. Water appears to seep out from base of upland and creates tranition/wooded fen zone at base. This occasionally gives way to high quality patches of fen, but much of the fen is overtaken by Lythrum salicaria and Typha spp. Area not likely to persist at prairie fen without management. Invasive-dominated portion of prairie fen; Toxicodendron vernix only indicator in immediate vicinity, but many prairie fen associates common. Invasives include Phalaris arundinacea, Phragmites australis, Lythrum salicaria; west end of prairie fen.