cycadn. 鐵樹目裸子植物學術名詞鐵樹類：植物學鳳尾蕉（群芳譜）蘇鐵：植物學鳳尾蕉尾：植物學蘇鐵屬：植物學鳳尾蕉：植物學蘇鐵：植物學英文釋義any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves