배나무아과 Pomoideae

1. 우상복엽이다 ·························································································································· 마가목속

1. 단엽이다

2. 상록수이다.

3. 심피는 완전히 유합되고 열매에 꽃받침이 남아 있다  ·································································· 826. 비파나무

3. 씨방은 2실이며 열매에 꽃받침이 없다 ·······································································다정큼나무속 Raphiolepis

2. 낙엽수이다.

4. 잎에 톱니가 없다 ······························································································ 개야광나무속 Cotoneaster

4. 잎에 톱니가 있다.

5. 꽃은 1 개 또는 2~3 개씩 모여달린다 ············································································ 명자나무속(모과속)

5. 산방화서， 복산방화서 또는 총상화서로 달린다.

6. 산방화서 또는 복산방화서로 달린다.

7. 가시가 있다 ···················································································································· 산사속

7. 줄기에 가시가 없다 ································································································ 845. 윤노리나무

6. 총상화서 또는 산형화서로 달린다.

8. 씨방은 2-5실이고 각 실에 2 개의 밑씨가 들어 있으며 꽃은 산형상 총상화서에 달린다.

9. 암술대는 밑부분이 서로 붙어 있다 ··················································································· 사과나무속

9. 암술대는 떨어져 있다 ······································································································ 배나무속

8. 씨방은 불완전하며 6-10 실이고 밑씨는 각 실에 1 개씩 들어 있다. 꽃차례는 총상이다 ··························844. 채진목