황새냉이속 Cardamine LINN.

1. 1~2 년초이다.

2. 소엽은 5쌍 이상이다.

3. 소엽에는 톱니가 있다 ··········································································································· 551. 싸리냉이

3. 소엽에는 거의 톱니가 없다.

4. 가지가 길고 구불구불하며 털이 적다  ························································································552. 황새냉이

4. 가지가 짧거나 없고 털이 많다  ······························································································· 553. 좁쌀냉이

2. 소엽은 4쌍 이하이다 ·············································································································· 554. 꽃황새냉이

1. 다년초이다.

5. 단엽이다.

6. 뿌리에서 돋은 잎은 총생하며 잎은 길이 1cm 이하이다.

7. 잎 가장자리는 갈리진다 ······································································································· 555. 두메냉이

7. 잎은 갈라지지 않는다 ·········································································································· 556. 애기냉이

6. 뿌리에서 돋은 잎은 총생하지 않으며 잎은 길이 2~8cm 이다 ·····························································557. 는쟁이냉이

5. 우상복엽이다.

8. 근경이 있다.

9. 덩이줄기가 있다  ················································································································558. 벌깨냉이

9. 근경은 옆으로 받는다.

10. 근경은 사방으로 벋고 식물체에 털이 있다    ·········································································559. 미나리냉이

10. 지하경이 옆으로 자라며 식물체에 털이 없다    ······································································560. 참고추냉이

8. 근경이 없고 포복경이 있다.

11. 꽃잎은 길이 4mm, 열매는 길이 2~3cm 이고 잎은 정우편이 제일 크다 ·············································561. 큰황새냉이

11. 꽃잎은 길이 8~10mm이다.

12. 소엽은 3~13 개， 각과는 길이 1~2cm 이며 정소엽이 가장 크다  ······················································562. 논냉이

12. 소엽은 5~9개， 꽃잎은 길이 8~10mm， 열매는 길이 15~30mm이다 ··············································563. 왜갓냉이