Rob Cross & Peter Lumley 
Plant Names [PDF ebook] 
A Guide to Botanical Nomenclature

Plant Names is a plain English guide to the use of plant names and the conventions for writing them as governed by the International Code of Botanical Nomenclature and the International Code of Nomenclature for Cultivated Plants. It covers the naming of wild plants, plants modified by humans, why plant names change, their pronunciation and hints to help remember them. The final section provides a detailed guide to web sites and published resources useful to people using plant names. The book incorporates the latest information in the most recently published Botanical and Cultivated Plant Codes, both of which are technical scientific publications that are difficult to read for all but the most dedicated botanists and horticulturists. From botanists to publishers, professional horticulturists, nurserymen, hobby gardeners and anyone interested in plant names, this book is an invaluable guide to using the potentially confusing array of scientific, commercial and common names.