Hybridisation in Saxifraga[link—standalone] A recreation of a cool little graph I saw in Saxifrages of Europe , showing the extent of hybridisation between the subsections of the genus Saxifraga. Filled circles indicate within subsection hybridisation reported, and dashed lines are uncertian hybrid reports.
 Gornall, R. (1989). Saxifrages of Europe: With Notes on African, American and Some Asiatic Species. Christopher Helm.