인동과 Caprifoliaceae

1. 복엽이다 ···································································································································· 딱총나무속

1. 단엽이다.

2. 꽃은 수레바퀴형이고 열매는 핵과이다 ······························································································ 덜꿩나무속

2. 꽃부리통이 길고 암술대도 길며 꽃부리는 대개 불규칙하다.

3. 꽃받침잎은 날개처럼 퍼져서 열매끝에 달린다 ····················································································댕강나무속

3. 꽃받침은 날개처럼 퍼지지 않는다.

4. 옆으로 기어가는 반관목으로 잎은 길이 lcm 정도이다········································································ 457. 린네풀

4. 줄기는 곧추자라거나 옆으로 벋어가는 관목으로 잎은 길이 3cm 이상이다.

5. 열매는 삭과이다.

6. 꽃은 순형이다 ····························································································애기병꽃속 Diervilla ADANS.

6. 꽃은 거의 규칙적이다 ········································································································ 병꽃나무속

5. 열매는 장과이다 ·················································································································· 괴불나무속