범의귀과 Saxifragaceae

1. 열매는 삭과이다.

2. 초본이며 심피는 대개 2 개이고 수술수는 꽃잎수와 같거나 2 배이다.

3. 헛수술이 없다.

4. 씨방은 2실이며 중축태좌이다.

5. 종자는 톱밥같이 생겼다.

6. 꽃에 포가 없다. 심피는 합생하고 잎은 장상맥 또는 장상복엽이다  ······················································· 개병풍속

6. 꽃에 포가 있다. 심피는 거의 떨어지고 잎은 복엽이다  ··································································· 노루오줌속

5. 종자는 둥글며 잎은 단엽이다.

7. 심피는 기부만 붙었다 ········································································································ 634. 돌부채

7. 심피는 다소 합생한다.

8. 수술은 10 개이다   ·········································································································· 바위떡풀속

8. 수술은 6 개다      ···············································································································돌단풍속

4. 씨방은 1 실이며 측막태좌이다.

9. 꽃은 4 수이며 꽃잎은 없고 취산화서에 달라며 포는 다소 잎처럼 생겼다    ·················································괭이눈속

9. 꽃은 5 수이며 대개 꽃잎이 있고 총상으로 달리며 포는 작다.

10. 심피는 크기가 같지 않으며 꽃잎은 피침형 또는 침형이다. ··························································654. 헐떡이풀

10. 심피는 크기가 같으며 꽃잎은 깃처럼 갈라지거나 밋밋하고 때로는 꽃잎이 없다  ·····························655. 나도범의귀

3. 헛수술이 있다 ······························································································································물매화속

2. 목본(간혹 초본)이며 심피는 2~5 개이고 수술은 때로 많다.

11. 꽃차례 주변에 중성화가 달라며 때로 중성화가 없을 때는 양성화가 매우 작다.

12. 암술대는 합생하고 덩굴식물이다     ·························································································677. 바위수국

12. 암술대는 떨어져 있다     ···············································································································수국속

11. 꽃차례에 중성화가 없다.

13. 목본식물이다.

14. 꽃은 4 수이고 수술은 다수이며 암술대는 붙어 있고 털은 단순하다  ·····················································고광나무속

14. 꽃은 5수이고 수술의 수는 꽃잎수의 2배이며 암술대는 떨어져 있고 털은 대개 성모이다 ·····························말발도리속

13. 초본식물로 수술의 수는 꽃잎수의 3 배이다  ···············································································658. 나도승마

1. 열매는 장과이다    ···········································································································682. 까마귀(여름)밥나무

                                                                                              까마귀밥나무속 Ribes LINN.