송이풀속 Pedicularis LINN.

1. 잎은 4 개씩 윤생하고 꽃은 정생하는 수상화서에 4 개씩 달린다.

2. 잎은 피침형 내지 좁은 피침형 예두이고 꽃부리는 길이 1O~15mm 이며 상순은 하순의 1/2 정도로서 끝이 둥글다 ··········360. 이삭송이풀

2. 잎은 장타원형 내지 장타원상 피침형으로 둔두 또는 다소 예두이고 꽃부리는 길이 14-16mm 이고 상순은 절두형이다.

3. 줄기에 굽은 털이 다소 있고 상순은 길이 5mm로서 하순 길이의 2/3 정도이다    ······································361. 구름송이풀

3. 줄기에 털이 밀생하고 상순은 길이 4mm이다 ············································································ 361 +. 한라송이풀

1. 잎은 호생한다.

4. 상순은 부리같이 생기지 않거나 약간 부리 같고 둔두 또는 절두이다.

5. 꽃부리는 길이 35~50mm이고 상순은 아래쪽 가장자리에 털이 있다.

6. 줄기는 연약하고 길이 7~8cm로서 옆으로 뻗으며 지하경이 있다. 꽃은 대가 길고 액생한다  ···················· 362. 애기송이풀

6. 줄기는 굳세고 길이 20~100cm 이며 꽃은 정생하고 총상으로 달린다.

7. 뿌리에서 돋은 잎이 없으며 포는 피침형으로 깃처럼 갈라지고 상순은 밑에 털이 많다.

8. 줄기에 털이 밀생하고 잎은 깃처럼 갈라진다  ··········································································363. 칼송이풀

8. 줄기에 털이 없고 잎은 2 회 우상으로 갈라진다 ······································································ 364. 큰송이풀

7. 뿌리에서 돋은 잎이 보다 많으며 포는 둥글고 얕게 갈라진다 ·························································· 365. 대송이풀

5. 꽃부리는 길이 18-30mm 이고 상순은 털이 없다.

9. 잎은 대부분 뿌리에서 돋으며 줄기에 달린 잎은 매우 작고 꽃받침은 5개로 갈라진다.

10. 잎은 길이 15-20 cm 이고 너비 2-8cm 이다 ············································································· 366. 만주송이풀

10. 잎은 길이 3-11 cm 이고 너비 1-1.8cm 이다  ··········································································· 367. 바위송이풀

9. 잎은 대부분 줄기에 달리고 꽃받침은 2 개로갈라진다  ·······································································368. 부전송이풀

4. 상순은 부리같이 길다.

11. 잎은 호생한다 ························································································································· 369. 송이풀

11. 잎은 대생하지만 중부 이하는 호생하며 꽃이 많이 달린다.

12. 잎은 초질이다 ················································································································ 369+. 마주송이풀

12. 잎은 막질이다 ············································································································· 369 + +. 그늘송이풀