Clematis, the Genus: A Comprehensive Guide for Gardeners, Horticulturists ... - C. Grey-Wilson - Google Books

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

Clematis is the most popular of all garden climbers, a popularity that is undoubtedly due to the astonishing range of varieties available. This new book stresses the species of Clematis, unlike The Gardener's Guide to Growing Clematis (page 27), which…