After Peridiscaceae was finally placed in Saxifragales, it was expanded to include Soyauxia in 2007, and expanded again to include Medusandra in 2009.
Despois de que Peridiscaceae fose finalmente colocada en Saxifragales, expandiuse para incluír Soyauxia en 2007, e expandiuse outra vez para incluír Medusandra en 2009.