Planchonella costata is a small coastal tree native to the northern North Island (New Zealand) and to Norfolk Island (Australia). In New Zealand, its common name is Tawapou (Māori: Tawāpou); on Norfolk Island it is called Bastard Ironwood. The name costata is from the Latin costatus (ribbed), a reference to the prominently raised primary nerves of the leaves. H 20m
