This is the most comprehensive and up-to-date dictionary of botany available. Drawing on the information contained in the acclaimed Oxford Dictionary of Natural History, the text has been fully revised to give wide coverage on topics including biochemistry, plant physiology, cytology, ecology, genetics, evolution, bio-geography, earth history, and the earth sciences. There is worldwide coverage of taxonomic groups: one-third of the entries are devoted to taxa, from bacteria and fungi to the main groups of flowering and non-flowering plants.