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|Noun||1.||giant fern - highly variable species of very large primitive ferns of the Pacific tropical areas with high rainfall|
tree fern - 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
genus Angiopteris - one species: tree fern