南洋杉为南洋杉科的常绿大乔木，主要分布在南美洲、大洋洲、太平洋各岛及亚热带地区，是世界著名的观赏名木。南洋杉主干直立，侧枝平展，分层清晰，枝态秀丽，南方多做庭园观赏树种栽植，北方则均做为盆栽观赏植物。一、植物形态南洋杉属常绿乔木，在原产地可高达40－60m，胸 Araucaria as Araucariaceae evergreen arborvitae, mainly in South America, Oceania, the Pacific islands and subtropics, is the world famous ornamental trees. Araucaria main stem erect, collateral flat, clear layers, beautiful branches, the south to do more garden ornamental tree planting, the north are as potted ornamental plants. First, the plant morphology Araucaria is evergreen trees, in the origin can be as high as 40-60m, chest