7. 꼭두서니목 Rubiales

1. 수술의 수는 꽃부리 열편의 수와 같거나 적다.

2. 수술의 수는 꽃부리 열편의 수와 같다.

3. 옆은 대생하며 턱잎이 있거나 잎이 윤생한 것은 턱잎이 없다   ···················································꼭두서니과 Rubiaceae

3. 잎은 대생하거나 줄기를 둘러싸며 턱잎이 없다    ···································································인동과 Caprifoliaceae

2. 수술의 수는 꽃부리 열편의 수보다 적다.

4. 씨방은 3 설이지만 2 실은 비어 있다    ··············································································마타리과 Valerianaceae

4. 씨방은 1 실이며 꽃은 많은 총포엽으로 싸인 두상화서에 달려있다 ··········································· 산토끼꽃과 Dipsacaceae

1. 수술의 수는 꽃부리 열편의 2 배이다 ························································································· 연복초과 Adoxaceae