(1837) Lithophragma is a genus of flowering plants in the saxifrage family containing about nine species native to western North America.

The petals of the flowers are usually bright white with deep, long lobes or teeth.

L. maximum is a federally listed endangered species.

Lithophragma specifically coevolved with moths of the genus Greya, who pollinate and only lay eggs on Lithophragma plants.

[1] Plants of the World Online and the Flora of North America North of Mexico elevate Lithophragma trifoliatum to species status,[3][1] but the Jepson Manual considers it to be a variety of L. parviflorum (L. parviflorum var.