앵초과 Primulaceae

1. 꽃부리는 봉오리 안에서 비틀린다.

2. 열매는 뚜껑처럼 열린다 ··············································································································· 41. 뚜껑별꽃

2. 열매는 세로로 갈라진다.

3. 꽃잎이 없고 수술은 화상에 붙어 있다 ···························································································· 42. 갯봄맞이

3. 꽃잎이 있다.

4. 꽃의 부분은 대개 7수이며 종자의 표피와 종자 사이에 공간이 있다 ·························································· 43. 기생꽃

4. 꽃의 부분은 5-6수이며 종자의 표피와 종자가 밀착한다.

5. 꽃잎사이에 작은 인편이 있다 ···························································································· 44. 버들까치수영

5. 꽃잎사이에 작은 인편이 없다 ··································································································· 까치수영속

1. 꽃부리는 봉오리안에 있을 때 비틀리지 않는다.

6. 암술대는 꽃부리의 밑부분에 붙어있고 약격은 뾰족하다  ········································································· 55. 종다리꽃

6. 암술대는 꽃부리에 붙어있고 약격은 둔두이다.

7. 꽃부리통은 짧으며 간혹 현부의 길이와 같다.

8. 꽃은 산형으로 달린다   ·············································································································봄맞이꽃속

8. 꽃은 총상으로 달린다 ··········································································································66. 이삭봄맞이

7. 꽃부리통은 현부보다 길다 ·················································································································앵초속