林投（Pandanus tectorius）
林投（學名：Pandanus tectorius），古作菻荼，別稱露兜樹、野菠蘿、假菠蘿、海菠蘿等，原產於馬來界，澳大利亞東部及太平洋三大島群。林投十分耐風、耐鹽，且繁殖容易，是常見的海岸防風定砂植物。也是蘭嶼達悟族人口中的「Ango」，達悟族會使用林投的氣生根烤或曝曬飛魚。
Scientific classification
界： 植物界 Plantae
演化支： 維管束植物 Tracheophyta
演化支： 被子植物 Angiosperms
演化支： 單子葉植物 Monocots
目： 露兜樹目 Pandanales
科： 露兜樹科 Pandanaceae
屬： 露兜樹屬 Pandanus
種： 林投 P. tectorius
分類及特徵
分類
被子植物
生長形式
灌木
最大高度
4-15m
中山大學校園的林投
型態與描述
根
It develops many prop roots from the trunk or the side branches.
莖
It is covered with sharp conical prickles.
葉型（質）
Its leaves are about 4-8 cm wide and 80-180 cm long, with numerous spines along the edges and the underside of the midrib. The leaves are pleated, having a 'V' cross-section,
linear
葉序
The leaves are spirally arranged in clusters at the tips of the branches.
clustered
花（序）
The male flowers are small, white, borne on a raceme which is subtended by a white bract. The female flowers are borne on a globose flowering head.
dioecious raceme
果實
4-20 cm wide and 8-30 cm long. It ripens from green to orange. Each individual segment, is a wedge-shaped drupe that is fibrous and buoyant.
multiple fruit
