Ohio State University
Ohio State University: Anthophyta, Evolution & Diversity
An online summary of the evolution of flowering plants at an advanced level. The text is supported by good illustrations and is followed by a quiz. This is a good review for exams.
CK-12 Foundation
Ck 12: Biology: Flowering Plants
[Free Registration/Login may be required to access all resource tools.] Describes the parts of a flower and the classification and evolution of flowering plants.