Manual de Plantas de Costa Rica is a concise, illustrated guide to all of the species of native, naturalized and commercially cultivated vascular plants of this Central American country, which lies between Nicaragua and Panama and is thus centered in isthmian Central America–a biogeographical funnel between South and North America, densely rich in species and geological history. The Manual is the first comprehensive Spanish-language account of the Costa Rican flora. This identification manual includes brief formal descriptions and informal notes about each of a total of 37 families, 193 genera, and 832 species. Keys to all the genera and species are also included.