Hydrangeaceae
Genera : 17 Species: 170	To Genus Directories: Deutzia x Iemoinei Hydrangia Jamesia americana Philadelphus coronarius To Dendrology Genus Directories: Hydrangia Philadelphus coronarius

Distribution: Widespread in the Northern Hemisphere in temperate and subtropical regions.

Economic Uses: Cultivated as an important garden ornamental, also the source of the medicinal compound hydrangin and as a poison.

Defining Features of Interest: In spite of morphological evidence that keeps it as a separate family, some botanists either divide the family in to several smaller groups or place it with in the Saxifragaceae.

Fossil Evidence:No known fossil record.