4) 등골나물족 Eupatorieae

1. 꽃밥은 절두로서 부속체가 없으며 총포편은 많고 1~2 층이다·········································································601. 물머위

1. 꽃밥은 첨두로서 부속체가 있으며 총포편은 기부가 떨어진다.

2. 관모는 막편상이며 밑이 넓다 ··········································································································· 602. 불로화

2. 관모는 털같고 떨어지며 수가 많다 ······································································································ 등골나물속

등골나물속 Eupatorium LINN.

1. 잎 뒷면에 선점이 있다.

2. 잎자루가 없다   ····················································································································· 603. 골등골나물

2. 잎자루가 있다   ························································································································604. 등골나물

1. 잎에 선점이 없다.

3. 중간 이하의 잎은 갈라지고 꽃은 홍자색이다 ····················································································605. 벌등골나물

3. 잎은갈라지지 않았고 꽃은 은백색이다   ······························································································ 606. 사근초