Flowering Plants. Monocotyledons: Lilianae (except Orchidaceae) - Google Books

https://books.google.de/books?id=FyPVYzL76sMC

When Rolf Dahlgren and I embarked on preparing this book series, Rolf took prime responsibility for monocotyledons, which had interested him for a long time. After finishing his comparative study and family classification of the mono cots, he devoted much…