Genus
Dryopteris (Wood ferns)
Dryopteris expansa. Photo: (c) Samuel Brinker, some rights reserved (CC BY-NC)
Dryopteris /draɪˈɒptərɪs/, commonly called wood fern, male fern (referring in particular to Dryopteris filix-mas), or buckler fern, is a genus of about 250 species of ferns with distribution in Eastern Asia, the Americas, Europe, Africa, and the Pacific islands, with the highest species diversity in eastern Asia. Many of the species have stout, slowly creeping rootstocks that form a crown, with a vase-like ring of fronds. The sori are round, with a peltate indusium. The stipes…
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