OUP. 2005. 656pp, keys, drawings, distribution maps. Hardback.
"Gleaming with careful scholarship....As with most of the contributions, the discussions, in addition to the keys and the descriptions, offer valuable insights by the leading experts....It is a privilege to access this wealth of botanical information."--Richard Felger, Economic Botany "Each of the genera has one or more representative species illustrated with a lone drawing, and entries include distribution maps for the native and established species. The editors also provide a comprehensive bibliography. This encyclopedic treatment can serve as a plant identifier and a systematic conspectus of North American flora."--Reference & Research Book News