꼬리풀속 Pseudolysimachion OPIZ

1. 꽃부리 통부는 뚜렷하고 꽃부리 열편보다 1/3 또는 그이상 길다.

2. 잎은 대생하고 잎자루가 뚜렷하다.

3. 잎에 톱니가 있다.

4. 잎은 두꺼우나 간혹 막질이며 피침형 또는난형이고 예두이며 잎자루는 7~20mm이다.

5. 잎은 넓은 3각상 난형이고 꽃부리 열편은 길이 3~3.5mm로서 원두이다 ······································· 326. 넓은산꼬리풀

5. 잎은 피침형 내지 난형이고 꽃부리는 길이 5~7mrn로서 둔두이다

6. 잎의 톱니는 규칙적이며 꽃받침잎은 좁은 난형이고 예두이며 꽃잎은 난형 내지 난상 원형이고 둔두이다            ··············· 327. 넓은잎꼬리풀

6. 톱니는 불규칙한 겹톱니이며 꽃받침은 좁은 피침형이고 둔두이며 꽃부리열편은 장타원형 내지 난형이고 예두이다 ···············328. 봉래꼬리풀

4. 잎은 막질이며 좁은 피침형 또는 피침형이고 점첨두이며 잎자루는 3~6mrn이다 ··································· 325. 긴산꼬리풀

3. 잎은 결각상 톱니이거나 깃처럼 갈라진다

7. 잎은 결각상 톱니 또는 깃처럼 갈라지며 꽃부리는 길이 5-7.5mm이고 삭과는 길이 3rnm 이다 ··················329. 구와꼬리풀

7. 잎은 깃처럼 갈라지고 꽃부리는 길이 3mm이다 ······································································ 330. 큰구와꼬리풀

2. 잎은 대생하지만 위쪽에서는 호생하며 잎자루는 희미하다.

8. 잎은 선형 또는 좁은 파침형이며 털이 없거나 적다 ··············································································331. 꼬리풀

8. 잎은 도피침상 장타원형이며 털이 밀생한다 ····················································································332. 털꼬리풀

1. 꽃부리 통부는 꽃부리 길이의 1/4 정도이며 잎은 대생한다.

9. 화서축은 든든하고 꽃이 많이 달리며 잎자루는 희미하다.

10. 잎은 좁은 난형 또는 장타원형이다 ····························································································333. 산꼬리풀

10. 잎은 좁은 장타원형 또는 피침형이다 ·······················································································334. 큰산꼬리풀

9. 화서축은 연약하며 꽃이 드물게 달리고 잎자루는 뚜렷하다 ····································································335. 섬꼬리풀