This was right next to the crested male fern I was trying to identify. I'm pretty sure it's Onoclea sensibilis (the list of fern websites I included in another posting yesterday really helped! It's in the Plants Identification Online Resources file now), common name Sensitive Fern, Bead Fern, Sympathy Fern. I didn't know when I took the third photo of the underside of the leaves that there would not ever be sori there, as these have separate fertile fronds.
