Series of volumes which describe some 3323 endemic, rare, endangered, vanishing, and economically important species belonging to 27 groups of plants and animals in the Philippines. Each volume describes the species of plants or animals in terms of their salient biological features, and whenever possible provides information on their habitat, geographic distribution, ecological status, and economic importance. Scientific, common and vernacular names are given where available. In all there are twelve volumes, plus a separate general index.