16. 쥐손이풀목 Geraniales

1. 꽃은 양성이다.

2. 분비세포가 없다.

3. 꽃은 규칙적으로 갈라진다.

4. 심피는 성숙하면 작은 열매로 갈라진다.

5. 성숙한 심피는 중심축에서 탁력으로 갈라진다 ····························································· 쥐손이풀과 Geraniaceae

5. 갈라진 심피에 작은 돌기나 가시가 있다··································································· 남가새과 Zygophyllaeeae

4. 성숙한 심피는 갈라지지 않는다.

6. 잎은 복엽이며 즙액이 시다 ······················································································ 괭이밥과 Oxalidaeeae

6. 잎은 단엽이며 즙액은 시지 않다 ······················································································· 아마과 Linaeeae

3. 꽃은 불규칙하게 갈라진다.

7. 꽃밥은 세로로 갈라지며 잎은 호생한다 ·········································································· 한련과 Tropaeolaeeae

7. 꽃밥은 구멍으로 쏟아진다 ··························································································· 원지과 Polygalaeeae

2. 분비세포가 있다.

8. 잎은 선점이 산포한다 ········································································································ 운향과 Rutaeeae

8. 잎은 선점이 없다 ····································································································· 멀구슬나무과 Meliaeeae

1. 꽃은 단성이다.

9. 꽃은 퇴화하지 않았다 ······························································································ 소태나무과 Simaroubaeeae

9. 꽃은 보통 많이 퇴화하였다.

10. 육상에서 자라며 심피는 3 개이다 ··················································································· 대극과 Euphorbiaeeae

10. 수중에서 자라며 심피는 2 개이다 ················································································ 별이끼과 Callitriehaceae