바위떡풀속 Saxifraga LINN.

1. 꽃은 끝에 1~2 개뿐이고 그 밖의 것은 살눈이다 ················································································635. 씨눈바위취

1. 꽃차례에 살눈이 없다.

2. 잎은 타원형이다.

3. 예리한 톱니가 있다  ···········································································································637. 구름범의귀

3. 잔 톱니가 있다  ······················································································································638. 범의귀

2. 잎은 원심형 또는 넓은 타원형이다.

4. 잎은 원심형이다.

5. 결각이 있다 ···················································································································· 639. 바위떡풀

5. 잎에는 톱니가 있다.

6. 포복지가 없다.

7 꽃잎은 꽃받침 길이의 2-3 배이다 ······················································································ 636. 톱바위취

7. 꽃잎은 꽃받침보다 길다 ································································································· 640. 흰바위취

6. 포복지가 있다.

8. 상록성이 아니며 암술은 8 개이다 ··················································································· 641. 구실바위취

8. 상록성이며 암술은 2 개이다 ······························································································· 642. 바위취

4. 잎은 넓은 타원형이다 ············································································································ 643. 참바위취