臺灣新紀錄蘭科植物：琉球石斛

Dendrobium okinawense Hatusima & Ida (Orchidaceae): A Newly Recorded Species in Taiwan

琉球石斛（Dendrobium okinawense）為臺灣新紀錄的蘭科植物，這種植物過去僅紀錄於琉球少數地點，我們最近在臺灣東南沿海山脈，海拔約900到1500公尺的山區發現它的存在。本種在花的構造上雖與石斛（D. moniliforme）相類似，但可以藉花部的尺寸大小、花瓣和唇瓣的形狀、花色等特徵，明顯區別開來。

A newly recorded species, Dendrobium okinawense Hatusima & Ida, in Taiwan is described and illustrated. This species is rare and endemic to Ryukyu Islands. We recently found it in the mountains along the coast of southeastern Taiwan. Although the flower of D. okinawense is somewhat structurally similar to that of D. moniliforme, they are evidently different from each other in floral dimension, petals, lip shape and floral color.