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Dryopteris
Dryopteris
-Key to the Genus
A)
Basal pinnae less than 1/2 as long as longest pinnae; stipe less than 1/4 the total frond length.
B)
Basal pinnae more than 1/2 as long as the longest pinnae; stipe more than 1/4 the total frond length.
Royal Botanical Gardens