虎耳草科 包括36属，大约460余种，欧洲有12属，中国有27属。

本科植物多为草本，有4-5个萼片，雄蕊和花瓣同数或倍数，花瓣常有爪。

比较常见的品种有：

一般分类法将梅花草科 Parnassiaceae归入虎耳草科，但它们的基因亲缘关系并不近。

Saxifragaceae is a plant family with about 775 known species in 48 genera.

The flowers are hermaphroditic and actinomorphic. They have 4 or 5 petals and 5 or 10 stamens.

Well known species include:

Parnassiaceae have sometimes been treated as part of this family, although they are only distantly genetically related.