"The Saxifragales (saxifrages) are an order of flowering plants (Angiosperms). They are an extremely diverse group of plants which include trees, shrubs, perennial herbs, succulent and ...
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aquatic plants. The degree of diversity in terms of vegetative and floral features makes it difficult to define common features that unify the order.
In the Angiosperm Phylogeny Group classification system, the Saxifragales are placed within the major division of flowering plants referred to as eudicots, specifically the core eudicots. This subgroup consist of the Dilleniaceae, superasterids and superrosids. The superrosids in turn have two components, rosids and Saxifragales. The Saxifragales order has undergone considerable revision since its original classification based purely on plant characteristics. The modern classification is based on genetic studies using molecular phylogenetics. There is an extensive fossil record from the Turonian-Campanian (late Cretaceous) time, about 90 million years ago (Myr). However, but molecular studies suggest an earlier origin in the early Cretaceous (102–108 Myr) with rapid early diversification to more modern forms." - (en.wikipedia.org 09.01.2021)
