Annonaceae
   Botanical description of this family of trees, shrubs and lianas, with technical drawings of Annona and Asimena.
   http://delta-intkey.com/angio/www/annonace.htm

The Annonaceae
   Botanical characteristics of this family with photographs and a brief description of a number of individual species.
   http://www.botany.hawaii.edu/faculty/carr/annon.htm