Browsing items filed under: Partial Shade × Requires Shelter × Heavy Clay Loam × Wetland/Bog × Cyathea medullaris Mamaku, black ponga Tallest of the tree ferns Cyathea smithii Soft tree fern Found throughout NZ in moist soils. Distinguishes itself from other tree fern species because of its 'skirt' of dead fronds that hang from the top of the plant. Dacrycarpus dacrydioides Kahikatea, white pine. Found both North and South Island in damp swampy areas.