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Key to Dryopteridaceae
https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39427
1 Leaf blades pentagonal in outline, ca. 1× as long as wide, the terminal pinna by far the largest; [introduced species, naturalized in moist ravines in SC] | |
5 Veins branching dichotomously, free, not rejoining to form a netlike pattern; pinnae 25-50 pairs on larger leaves; [plant a common native species] |