United States, Illinois, McHenry, Boger Bog (McHenry County Conservation District) in Bull Valley, Nunda Township, near the entrance by the shelter and the restroom facilities.
Two sheets. Collector notes: The former owner of this site is known to have planted many species, both native and non-native. No record of these plantings is known to exist. Impatiens balfourii is reported to have been present for at least 25 years. This site is also known as Gladstone-Boger Fen IMC024 (Fox River Watershed Biodiversity Inventory).