1996. As new hardcover in very good dust jacket. This new edition of Passion Flowers is the most comprehensive illustrated guide to this spectacular genus ever published. It adds 53 species, bringing the total number documented to over 150, all showcased in a new, larger format. The book also describes important changes to the taxonomy of passion flowers and includes sections on cultivation and hybridization, an identification key, over 100 leaf drawings, and 120 colour illustrations, of which 59 are new.