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Definition of Black tree fern
1. Noun. A showy tree fern of New Zealand and Australia having a crown of pinnated fronds with whitish undersides.
Exact synonyms: Cyathea Medullaris, Sago Fern, Silver Tree Fern
Generic synonyms: Tree Fern
Group relationships: Cyathea, Genus Cyathea
Generic synonyms: Tree Fern
Group relationships: Cyathea, Genus Cyathea