Fascinating! This is an undergraduate textbook I picked up at a used book store. A textbook is not the type of book I would normally read but the subject matter absolutely fascinates me so I gave it a try. Since it's a textbook I have to admit that the amount of information was a bit of an overload and is not intended to be read straight through, without breaks to digest it, as I did but once I got started I couldn't quit. It covered a vast amount of information from the earliest known plant life (Prokarytes found in stromatolites) progressing through the geological time periods and discussed each form of plant life as they evolved. What particularly interested me were maps that showed the progression of various plant types during geological periods as the continents drifted. The book is intended as a general overview of the subject and is meant as an introduction for further study by the students taking the class but for my purposes it was perfect. Although I would like to read more about this fascinating subject in the future.