조팝나무아과 Spiraeoideae

1. 초본식물이다 ·······························································································································눈개승마속

1. 목본식물이다.

2. 열매는 삭과이고 종자에 날개가 있으며 꽃은 지름이 4cm 이상이다 ······················································· 697. 가침박달

2. 열매는 골돌이고 종자에 날개가 없으며 꽃은 지름이 3cm 이하이다.

3 잎은 복엽이다 ···················································································································· 698. 쉬땅나무

3. 잎은 단엽이다.

4. 꽃잎은 선형이고 밑씨는 2 개씩 들어 있으며 열매는 양봉선으로 터진다 ···········································699. 금강인가목

4. 꽃잎은 원형 내지 타원형이다.

5. 턱잎이 없다 ·····················································································································조팝나무속

5. 턱잎이 있다.

6. 열매는 양봉선으로 터진다 ······························································································ 산국수나무속

6. 열매는 복봉선으로 터진다.

7. 꽃은 총상화서에 달리고 종자는 보통 5개씩 들어 있다 ····················································· 719. 나도국수나무

7. 꽃은 원추화서에 달리고 종자는 보통 1-2 개씩 들어있다 ························································ 720. 국수나무