WCSP is an international collaborative programme (view contributors) that provides the latest peer reviewed (view reviewers) and published opinions on the accepted scientific names and synonyms of selected plant families. It allows you to search for all the scientific names of a particular plant, or the areas of the world in which it grows (distribution).
The checklist includes 173 Seed Plant families (View list of included families). Different families are in different stages of review as indicated in the family list. There are currently more than 155 contributors from 22 countries.