Magnoliophyta

In the classification system devised by Cronquist, the angiosperms are the Division Magnoliophyta, which is subdivided into two classes (ending -opsida), each of which is divided into subclasses (ending -idae). In all, there are 12 angiosperm subclasses, containing 400 families (ending -aceae) and more than 200,000 species.