The Virtual Foliage Home Page - Large collection of plant pictures
Shrubs & Trees - A large database with many photos of shrubs and trees. Browse by latin or common name.
HortiPlex Plant Database - En søgemaskine til planter. Den kan finde mange planter med beskrivelser og billeder. Man kan søge på enten det engelske eller det botaniske navn.
Plants For A Future Plants for a Future is a resource centre for rare and unusual plants, particularly those which have edible, medicinal or other uses.
OSU Plant Dictionary Plant Dictionary is an indexed system of teaching resources for the discipline of Horticulture and Crop Science. It was developed to complement the other electronic resources developed at Ohio State University.
OSU Factsheet Database Over 20,000 pages of Extension fact sheets and bulletins provide a concentrated source of plant-related information for answering your questions or helping you teach others about plants.
The Harvard University Herberia A huge selection of information, from a vast species database, publications and a range of collections.