1) 엉겅퀴족 Cynareae

1. 두화는 1 개의 소화로 된 것이 모여서 공 같은 꽃차례로 되었다  ······································································절굿대속

1. 두화는 많은 소화로 되어 있다.

2. 수과는 밑에서 바로 붙는다.

  3. 수과에 털이 밀생하였다 ················································································································522. 삽주

  3. 수과에 털이 없다.

    4. 총포편에 갈고리 같은 가시가 있다 ··································································································523. 우엉

    4. 총포에 갈고리 같은 가시가 없다.

      5. 총포편과 잎에 가시가 있다.

        6. 관모에 거센 털이 있다  ·······························································································524. 지느러미엉겅퀴

        6. 관모는 깃같이 생겼다.

          7. 관모는 꽃부리보다 길고 2가화이며 포복근이 길다   ·······································································525. 조뱅이

          7. 관모는 꽃부리보다 길지 않고 1 가화이며 포복근이 없다 ·····································································엉겅퀴속

      5. 총포편에 가시가 없으며 잎에는 가시가 없으나 때로 짧은 가시가 있다.

        8. 열매에 15 개의 능선이 있으며 총포 뒷면에 맨드라미 같은 부속체가 있다  ··············································536. 지칭개

        8. 열매에 4 개의 능선이 있고 총포편에 부속체가 없다.················································································분취속

2. 수과는 비스듬히 붙거나 옆으로 불는다.

  9. 총포는 포엽으로 싸이지 않고 관모는 층이 많다

    10. 총포편에 뚜렷한 부속체가 없다.

      11. 꽃밥은 밑부분이 붙어서 수술대를 둘러싸고 총포편에 긴 가시가 있다 ·························································수리취속

      11. 꽃밥의 밑부분은 떨어지고 총포편에는 가시가 있거나 없다    ····························································570. 산비장이

    10. 총포편에 막질의 부속체가 있다.

      12. 총포는 밋밋하다   ·················································································································571. 뻐꾹채

      12. 총포 가장자리에 돌기가 있다   ································································································572. 수레국화

  9. 총포편은 가시가 있는 포엽으로 싸여 있고 수술대에 털이 있으며 잎에 가시가 있다    ··········································573. 잇꽃