공작고사리속 Adiantum LINN

1. 잎은 우상복엽이다

2. 잎은 2~4회 우상복엽이다.

3 소우편은 두꺼우며 톱니가 있고 1 개 이상 갈라지지 않는다 ······························································ 67. 섬공작고사리

3 소우편은 앓으며 몇 개로 갈라졌다 ······························································································ 69. 봉작고사리

2. 잎은 1회 우상복엽이며 흔히 끝이 자라서 새싹이 돋는다. 우편은 둥글며 흔히 약간 갈라진다 ··························68. 암공작고사리

1. 잎은 2 개씩 갈라진다 ···················································································································70. 공작고사리