Global Compendium of Weeds (hear.org)
This website is a collaborative venture between AgWest (data & weed expertise) and the Hawaiian Ecosystems at Risk project (HEAR) (database consultation & website management).
The Global Compendium of Weeds is a list of plant species (over 28,000 names) that have been cited in specific references (approximately 1,000) as weeds. An expert has assessed the status of the weed based on its context in each document. Sometimes additional information – such as native range, whether the plan has reported medical/herbal uses, etc – is included when available.