Browsing items filed under: Fern × Full Shade × Requires Shelter × Moist/damp × Blechnum discolour Crown fern. Piupiu. Found throughout NZ usually in drier forests Cyathea medullaris Mamaku, black ponga Tallest of the tree ferns Ptisana salicina Marratia salicinia, King fern, para Stunning fern with tropical appearance now rare in the wild due to decimation by wild pigs and goats.