Gymnocarpium jessoense (Koidz.) Koidz.
Common Name: NORTHERN OAK FERN
Coefficient of Conservatism: 10
Coefficient of Wetness: 5
Wetness Index: UPL
Physiognomy: Nt Fern
Status: E
Gymnocarpium jessoense A. Graeff

Outcrops of non-calcareous rocks, often in partial sun; very local.

Michigan plants are subsp. parvulum Sarvela, which is sometimes recognized at the rank of species as Gymnocarpium continentale (Petrov) Pojark. For hybrids see Gymnocarpium dryopteris.

Locations

Iron County
Marquette County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 18, 2021. https://michiganflora.net/species.aspx?id=529.