tree fern
tree·fern
noun
1.
any of numerous usually tropical ferns having a thick woody stem or caudex and a crown of large fronds; found especially in Australia and New Zealand; chiefly of the families Cyatheaceae and Marattiaceae but some from Polypodiaceae
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WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.