Any of various terrestrial ferns of the genus Lygodium, having a single pinnately compound leaf that climbs by twining, including L. palmatum of the eastern United States.

• 攀缘性蕨类：一种海金沙属陆生蕨类植物，长有单瓣的羽状复叶，通过缠绕而向上攀缘，包括美国东部的掌羽海金沙