양지꽃속 Potentilla LINN.

1. 꽃은 황색이며 꽃잎은 꽃받침보다 크고 꽃턱은 꽃이 진 다음 커지지 않는다.

2. 톱니가 있다.

3. 꽃은 포복경 잎겨드랑이에 1 개씩 달리며 소화경은 길이 10-30 cm 이고 소엽은 13-19 개가깃처럼 배열한다 ························ 730. 눈양지꽃

3. 꽃의 일부는 산발상으로 배열하고 소화경은 길이 4cm 이하이다.

4. 소엽은 5 개가 손바닥모양으로 배열한다 ··············································································· 731. 가락지나물

3. 소엽은 3개 또는 그 이상이 3출 또는 우상으로 배열한다.

5. 줄기는 옆으로 기면서 가지가 갈라지고 꽃은 가지끝에 1 개씩 달린다 ··················································· 732. 좀딸기

5. 줄기는 곧추자라며 일부가 비스듬히 서고 포복지에 꽃이 달리지 않는다.

6. 줄기는 길이 40 cm 이하로서 꽃자루같고 잎은 1-3 개씩 달린다.

7. 잎의 뒷면은 분백색이다   ······························································································ 733. 돌양지꽃

7. 잎의 뒷면은 녹색이거나 흰 털이 밀생하여 희게 되었다.

8. 소엽은 3 개씩이며 포복지가 없다.

9. 잎은 흰 털로 인하여 희다 ························································································· 734. 은양지꽃

9. 잎은 녹색이다  ······································································································ 735. 좀양지꽃

8. 소엽은 3-7 개(9 개)이지만 3 개인 때는 포복지가 있다.

10. 잎은 뒷면에 흰 솜털이 있고 포복지가 없다 ·································································· 736. 솜양지꽃

10. 잎은 담색 또는 녹색이다.

11. 소엽은 5-7 개(9 개)이다.

12. 포복지가 없다 ··································································································· 737. 양지꽃

12. 포복지가 있다 ······························································································· 738. 제주양지꽃

11. 소엽은 3 개이다.

13. 소엽은 난형이며 포복지의 것은 뿌리에서 돋은 잎과 같거나 때로 다소 크며톱니는 매우 크다. 꽃은 지름이 1.5-2 cm 이다 ·············· 739. 민눈양지꽃

13. 소엽은 도란상 장타원형이며 톱니가 낮고 포복지의 것은 뿌리에서 돋은 잎보다 작다. 꽃은 지름이 1-1.5 cm이다 ························ 740. 세잎양지꽃

6. 줄기는 곧거나 비스듬히 자라고 높이가 30-100 cm이다.

14. 잎은 3 개이다 ······································································································ 741. 물양지꽃

14. 뿌리에서 돋은 잎은 우상복엽이다.

15. 뿌리에서 돋은 잎의 소엽은 15-27 개이다 ······································································ 742. 딱지꽃

15. 뿌리에서 돋은 잎의 소엽은 7-13 개이다··································································· 743. 원산딱지꽃

16. 소엽은 7-13 개이며 뒷면은 은백색이다.

16. 소엽은 4-8 개이며 황록색이다 ········································································ 744. 개소시랑개비

2. 소엽에 톱니가 없다.

17. 소엽은 10~16 개이다 ············································································································745. 물싸리풀

17. 소엽은 3-7 개이다 ··················································································································746. 물싸리

1. 꽃은 흑자색이며 꽃잎은 꽃받침보다 작고 꽃턱은 꽃이 진 다음 다소 커진다. 습지식물이다 ·······························747. 검은낭아초