This is by far the best and most comprehensive manual and illustrated guide to native and naturalized vascular plants—ferns, conifers, and flowering plants—

FNA presents for the first time, in one published reference source, information on the names, taxonomic relationships, continent-wide distributions, and morphol

"Following on the successes of two previous dictionary projects, the CRC World Dictionary of Plant Names and the CRC World Dictionary of the Grasses, Umberto Qu