콩아과 Papilionoideae

1. 단체웅예 또는 양체웅예이다.

2. 상록관목이며 열매는 육질이다 ········································································································ 868. 만년콩

2. 주로 낙엽성 초본이며 열매는 육질이 아니다.

3. 성숙한 열매는 두쪽으로 갈라지거나 터지지 않는다.

4. 작은 턱잎이 없다.

5. 기판쪽에 있는 수술은 완전히 떨어지거나 없다.

6. 소포가 없으며 간혹 작은 턱잎이 있다.

7. 잎에 선점이 있다.

8. 밑씨는 2~3 개이며 꼬투리는 편평하다 ················································································· 여우콩속

8. 밑씨는 4 개 이상이다 ·································································································· 935. 여우팥

7. 잎에 선점이 없다 ······································································································· 949. 비진도콩

6. 소포가 있으나 없을때는 작은 턱잎이 있다.

9. 암술대는 털이 없거나 밑부분에만 있다.

10. 꽃은 길이 5~8 mm 이다 ······································································································ 콩속

10. 꽃은 길이 15~20 mm 이다 ····························································································· 953. 새콩

9. 암술대는 윗부분에 털이 있다.

11. 암술머리 근처에만 털이 있다 ················································································ 946. 편두(까치콩)

11. 암술대에 털이 세로로 돋아있다.

12. 용골판은 비틀리며 오른쪽에 거가 있다.····················································································팥속

12. 용골판은 꼬이지 않으며 거가 없다 ······················································································ 동부속

5. 기판쪽에 있는 수술은 밑이나 중부에서 다른것과 유착한다.

13. 뒤쪽 2개의 꽃받침잎은 아래쪽것보다 넓고 크며 꼬투리는 외봉선 양쪽에 능선이 있다··························· 947. 해녀콩

13. 뒤쪽 꽃받침잎 2개는 다른것보다 짧으며 꼬투리에 털이 있고 능선이 없다 ·············································· 950. 칡

4. 작은 턱잎이 있다.

14. 잎은 우상복엽이다.

15. 총엽병은 끝에 거센 털이나 덩굴손이 없다.

16. 수술대는 전부 또는 5 개가 끝이 넓어진다 ·········································································· 960. 벌노랑이

16. 수술대는 선형이다.

17. 약격은 대개 부속체가 없다.

18. 밑씨는 다수이다.

19. 꽃은 액생한다.

20. 꼬투리는 편평하지 않으며 편평할 때는 세로로 2 실로 된다.

                              21. 잎은 홀수 또는 짝수 우상복엽이며 끝에 털이 있다.

22. 꼬투리에 돌기가 없고 꽃받침은 5 개로 갈라져 있다.

23. 용골판은 익판과 길이가 비슷하고 열매는 2실이다.

24. 용골판은 곧거나 뒤로 구부러지고 끝이 가시같이 뾰족하다 ·····································두메자운속

24. 용골판은 끝이 둔하다.

23. 용골판은 길이가 익판의 반 정도이고 꼬투리는 1 실이다 ·······································980. 털새동부

22. 꼬투리에는 잔가시가 있고 꽃받침은 뒤쪽 2 개가 짧으며 다소 합쳐 있다 ················· 감초속 Gycyrrhiza

21. 잎은 짝수 우상복엽이며 끝에 털 같은 돌기가 없다 ························································골담초속

20. 꼬투리는 편평하며 간혹 원통형이지만 종자는 편평하다

25. 줄기는 곧으며 가시가 있다 ···············································································아까시나무속

25. 덩굴식물이며 가시가 없다 ··················································································957. 애기등

19. 꽃차례는 가지 끝에 달리지만 간혹 가지 옆에서 자라는 것도 있다 ··············································956. 등

18. 밑씨는 2 개씩이다  ·····························································································962. 족제비싸리

17. 약격에 선모 또는 작은 돌기가 있다 ···················································································땅비사리속

15. 총엽병 끝에 거센 털 또는 덩굴손이 있다.

26. 수술통 끝은 절두이다.

27. 수술대는 상부가 넓어져서 뒤로 젖혀진다 ·············································································933. 완두

27. 수술대는 상부가 넓어지지만 가장자리는 젖혀지지 않는다 ·························································연리초속

26. 수술통은 끝이 비스듬하다 ································································································나비나물속

14. 옆은 단엽 또는 장상복엽이다.

28. 잎은 3출 또는 장상복엽이다.

29. 잎은 3출엽이다.

30. 목본식물이다 ··············································································································· 금작나무

30. 초본식물이다.

31. 꽃은 떨어지지 않으며 꽃톱은 수술통에 붙어 있다 ··································································토끼풀속

31. 꽃은 마르면 떨어지고 꽃톱은 떨어져 있다

32. 꼬투리는 꼬였다 ······································································································개자리속

32 꼬투리는 곧다 ····································································································978. 전동싸리

29. 잎은 장상복엽이다 ··································································································· 루핀속 Lupinus

28. 잎은 단엽이다    ··············································································································979.활나물

3. 종자가 2 개 이상 들어 있을 때는 종자와 종자 사이가 좁아진다.

33. 양체웅예 또는 윗부분이 갈라진 단체웅예이다.

34. 단체웅예이다 ·····················································································································892. 땅콩

34. 수술은 5 개씩 양체웅예이다 ·································································································899. 자귀풀

33. 기판 쪽의 수술은 떨어지거나 밑부분이나 중부에 붙어 있다.

35. 작은 턱잎이 있거나 없고 없을 때는 3소엽이다.

36. 작은 턱잎이 없다.

37. 꽃은 총상화서로 달린다.

38. 꽃은 2 개씩 달린다 ········································································································· 싸리속

38. 꽃은 1 개씩 달린다 ··································································································· 889. 꽃싸리

37. 꽃은 속생한다 ················································································································ 매듭풀속

36. 작은 턱잎이 있으며 열매는 분리과이다 ·········································································· 도둑놈의갈고리속

35. 작은 턱잎이 없다 ·················································································································· 묏황기속

1. 수술은 이생한다.

39. 3 출엽이다 ························································································································ 867. 갯활량나물

39. 우상복엽이다.

40. 꼬투리는 잘록하다.

41. 열매는 겉에 가시나 털이 없다 ·································································································· 회화나무속

41. 열매 겉에 털이나 가시가 있다 ································································································· 863. 개느삼

40. 꼬투리는 편평하다.

42. 겨울눈은 노출하며 소엽은 대생한다 ·························································································· 다릅나무속

42. 겨울눈은 잎자루 밑에 들어있으며 소엽은 호생한다 ····································································· 866. 향괴나무

완두속 Pisum LINN.

해녀콩속 Canavalia ADANS.

족제비싸리속 Amorpha LINN.

자운영속 Astragalus LINN.    

전동싸리속 Melilotus JUSS.