1. Pinnae totally separated, rachis not winged; blades elongated and ± elliptic in outline.
1. Pinnae connected by a narrow wing of tissue along the rachis (except between the lowermost pinnae pairs in Phegopteris connectilis); blades ± triangular.
All species found in Thelypteridaceae
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 21, 2019. https://www.michiganflora.net/family.aspx?id=Thelypteridaceae.