범꼬리속 Bistorta MILL.

1. 꽃차례에 살눈이 있다 ····················································································································196. 씨범꼬리

1. 꽃차례에 살눈이 없다.

2. 꽃차례는 정생 또는 액생하며 잎은 난상 심장형이다   ············································································198. 눈범꼬리

2. 꽃차례는 전부 꽃줄기 끝에 달린다.

3. 꽃줄기는 길이 15 cm 이하이고 잎은 난형 또는 타원형이며 털이 없다 ····················································195. 이른범꼬리

3. 꽃줄기는 보다 길고 잎은 난형 내지 선형이다.

4. 잎에 털이 없다.

5. 잎에 잎자루가 있다

6. 잎은 타원상 심장저이다   ····································································································197. 범꼬리

6. 잎은 좁은 피침형이다 ···································································································194. 가는범꼬리

             5. 잎에 잎자루가 없고 다소 심장저이다    ··················································································199. 참범꼬리

4. 잎 뒷면에 털이 있다.

7. 꽃줄기는 1m 내외이며 잎은 심장상 피침형이고 뒷면에 흰 털이 있다 ··················································200. 흰범꼬리

7. 꽃줄기는 50 cm 내외이다.

8. 잎은 얇고 턱잎의 안쪽은 갈라졌으며 끝이 비스듬히 기울어졌다. 소과경은 길이 2mm이고 꽃차례는 넓은 타원형이다 ·················· 201. 둥근범꼬리

8. 잎은 두껍고 턱잎은 통상 절두이며 소과경은 길이 4-5mm 이다  ·····················································202. 호범꼬리