Coefficient of Conservatism:
Coefficient of Wetness:
B. S. Walters
Not known from Michigan until 1992, when collected by J. S. McCormac and A. A. Reznicek at sites in Hillsdale Co. not far north of the Ohio border in deciduous swamps with Acer saccharinum, Fraxinus pennsylvanica, Populus heterophylla, and Quercus bicolor. Two years later, found by W. W. Brodowicz in Berrien Co., likewise in seasonally inundated swamps, and now known to be widespread but local in mature swamps in southern Michigan.
Without fruits, it can be difficult to separate this from F. pennsylvanica, but usually the leaves of F. profunda are much larger, with the leaflets more clearly petioled (the leaflet bases generally rounded rather than tapered to an indistinct petiole). Usually, the leaflets are entire, while in F. pennsylvanica, they are often toothed. See Nesom (2010a) for more details on distribution and taxonomy.