Flowering Plants - Armen Takhtajan - Google Books

https://books.google.de/books?id=oumyfO-NHuUC&pg=PA86#v=onepage

Armen Takhtajan is among the greatest authorities in the world on the evolution of plants. This book culminates almost sixty years of the scientist's research of the origin and classification of the flowering plants. It presents a continuation of Dr.…