There are in Muscatine County two localities where this fern occurs. These stations are sandstone ledges belonging to the carboniferous formation. This seems to be an exceptional and as yet unrecorded habitat for this fern. These localities are both along the Mississippi River, the one at Wyoming Hills, seven miles, the other at Montpelier, fourteen miles above Muscatine City.
Proceedings of the Iowa Academy of Sciences
©1892 Iowa Academy of Science, Inc.
"Pellaea atropurpurea, Link., on Sandstone Ledges in Muscatine County, Iowa,"
Proceedings of the Iowa Academy of Science, 1(Pt. 3), 93-93.
Available at: https://scholarworks.uni.edu/pias/vol1/iss3/26