sword fern
noun
1- a fern with long slender fronds肾蕨; 耳蕨。
1.1
- Genera Polystichum and Nephrolepis, family Dryopteridaceae: several species, including the North American P. munitum and the tropical N. exaltata.耳蕨属和肾蕨属, 鳞毛蕨科：数种, 包括北美的黔中耳蕨和热带地区的高大肾蕨。