The Saxifrage Society is the appointed International Cultivar Registration Authority for Saxifraga Cultivars and as such is responsible for publishing the International Register. The latest edition of this was published in 2018. As the International Registration Authority the Society maintains information on all Saxifraga cultivars as they appear. They also advise on validity of new names and ensure that they conform to the standards of the International Code of Nomenclature for Cultivated Plants(1995). 

Click to see how to contact the ICRA for the genus Saxifraga.