Umbelliferae
- Botanical description of this family of plants and shrubs, now classified as Apiaceae, with illustrations and technical drawings of a number of species.
- http://delta-intkey.com/angio/www/umbellif.htm

Apiaceae
- The characteristics of this family, formerly known as the Umbelliferae, which includes nearly 3000 species.
- http://www.theseedsite.co.uk/apiaceae.html

Umbellifer Internet Resource Centre
- International network for researchers interested in the Umbellifers. It includes information on publications, research projects, individuals, datasets, news and views.
- http://www.rbge.org.uk/data/URC/urc.htm

The Apiaceae
- Information on this family and photographs of a number of species.
- http://www.botany.hawaii.edu/faculty/carr/api.htm