쐐기풀속 Urtica LINN.

1. 대생엽 사이의 턱잎이 서로 붙어있다 ································································································ 149. 쐐기풀

1. 턱잎은 서로 붙지 않았다.

2. 잎은 피침형이며 길이 6-12cm 이다 ························································································151. 가는잎쐐기풀

2. 잎은 난형 또는 넓은난형이며 길이 5~10cm이다············································································ 150. 애기쐐기풀