Plant registration
Registration of Clematis
The RHS is the International Registration Authority for the genus Clematis.
Registration of cultivar names
Application form to register a Clematis cultivar name (73KB Adobe Acrobat pdf)
Application form to register a Clematis cultivar name (30KB Word Document)
Application form to register a Clematis cultivar name in German (85KB Adobe Acrobat pdf)
Application form to register a Clematis cultivar name in German (31KB Word Document)
Translated into German by Horst Weihrauch
The International Clematis Register and Checklist 2002
Compiled by Victoria Matthews
Brings together all Clematis cultivars and cultivated species up to December 2001. Includes descriptions, including details of raiser and registrant, parentage, synonyms, RHS Awards, where the name was first published, classification, glossary, and an A-Z of raisers and registrants.
Paperback 367pp. ISBN 1902896181
Price £19.95
Further reading
Evison, R. 1985. May Large-flowered Clematis cultivars. The Garden 110(5): 207-213.
Fretwell, B. 1989. Clematis. Deer Park, Wisconsin: Capability's Books.
Lloyd, C. 1989. Clematis. Deer Park, Wisconsin: Capability's Books.
Rogerson, B. 1985. Clematis viticella and its progeny. Pacific Horticulture 46(1): 40-44.