Arbor Harbor data consist of a collection of different sources. The root of the system includes taxonomic data derived from several databases dedicated exclusively to species indexing, such as the Catalogue of Life, Integrated Taxonomic Information System, and International Plant Names Index. Because of the discrpencies in taxonomic nomenclature among sources, data retrieval within Arbor Harbor begins with the simplified canonical form as confirmed by the Global Names Resolver. Additional information, including conservation and trade data, are linked through the canonical names for each species.