In The Gardener's Guide to Growing Clematis, Raymond Evison, world authority on clematis, provides a fresh look at the genus by focusing on not just the popular large-flowered cultivars but also the less-well-known species and their varieties. The sheer range of flower types from the large and flamboyant hybrids through to the delicate bell-shaped species means that there is a clematis for every situation and effect. A comprehensive plant directory provides detailed and authoritative descriptions of around 375 species and varieties.