A collaborative project of the USDA Forest Service, the UC Berkeley Digital Library Project, the Bioinformatics Working Group (Texas A&M University), the UC Davis Information Center for the Environment, and others, the CalFlora database "contains geographic and ecological distribution information for 8363 California vascular plant taxa, including links to other online sources for California flora data." The database may be searched by any of a dozen selections within five main fields: Group (Phylogenetic Category, Lifeform, and Lifeform adjective), Distribution (County, Plant Community, etc.), Rare Plants (Federal listing, State listing, etc.), Habitat Information (General, Substrate, etc.), Nomenclature (Family, Genus, common name, etc.) and Miscellaneous (CalFlora record number and PLANTS code). Typical returns provide, at the finest (species) level, a summary including Common Name, Category (Dicot, Monocot), Lifeform (tree, shrub, etc.), Status (native or exotic), Range, Distribution, Plant Communities, Elevation, and several code numbers. Note that the distribution information is particularly detailed as it not only lists occurrence by county but provides a detailed GIS map (Java) of occurrence within California as well. There is also an option to download data at the site.