Asplenium platyneuron (L.) D. C. Eaton
Coefficient of Conservatism: 2
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt Fern

Fields, open forests, and forest edges, especially in sandy or loamy soils. Less commonly on boulders and rock outcrops.

This is the only spleenwort that is frequent, at least in southern Michigan, and can form large colonies in old fields and open, successional woodland, especially on sandy soils. It is also the only one that usually occurs on soil rather than rock, though occasionally found on both calcareous and acidic rocks.

Wagner & Johnson (1981) noted that in the 1950’s this was one of the rarest of Michigan ferns, but that it has increased dramatically in the last few decades to become a common old field species in southern Michigan.


Allegan County
Barry County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
Cheboygan County
Chippewa County
Clinton County
Grand Traverse County
Hillsdale County
Ingham County
Ionia County
Jackson County
Kalamazoo County
Kent County
Lake County
Lapeer County
Leelanau County
    Including Manitou Islands
Lenawee County
Livingston County
Mackinac County
Macomb County
Manistee County
Monroe County
Montcalm County
Muskegon County
Oceana County
Ottawa County
Saginaw County
St. Joseph County
Van Buren County
Washtenaw County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. May 19, 2022.