A Guide to Species Irises: Their Identification and Cultivation - Google Books

https://books.google.de/books?id=pL6uPLo7l2gC

This volume was first published in 1997, providing a comprehensive, botanically detailed survey of this beautiful group of plants since publication of The Genus Iris by W. R. Dykes. Following the pattern of the original Dykes monograph, botanical details,…