Catalogue of Life

Catalogue of Life. From their website:” The Catalogue of Life is the most comprehensive and authoritative global index of species currently available. It consists of a single integrated species checklist and taxonomic hierarchy. The Catalogue holds essential information on the names, relationships and distributions of over 1.6 million species. This figure continues to rise as information is compiled from diverse sources around the world” .   It contains all the taxonomic data you might need.

Plantlist

The Plantlist – a collaboration between two botanical gardens to create a comprehensive index of vascular plants and bryophytes.