Formerly Director General of the Royal Horticultural Society, Chris is an eminent plantsman who was awarded the RHS Victoria Medal of Honour in 1976 for his services to horticulture and the CBE in 1991. He chaired the International Commission for the Nomenclature of Cultivated Plants. He has published many botanical and horticultural papers and articles and was editor of The Plantsman. In 1990 Dorling Kindersley published the bestselling Gardeners’ Encyclopedia of Plants & Flowers (over a million copies in the U.K.). This was followed by The RHS Encyclopedia of Gardening and The RHS A to Z Dictionary of Plants. He is currently updating the A-Z.