Maintained by the National Plant Germplasm System.
Crop collections, research, protocols and a searchable database for germplasm material.
A database of world wide germplasm collections of Lactuca species
Center of the Consultative Group on International Agricultural Research (CGIAR) site containing links to genetic diversity, germplasm documentation and databases
National Center for Genome Resources
A sequence database maintained at the National Center for Biotechnology Information.
The Medicinal Plant Metabolomics Resource website is available with metabolomics data from serveral medicinal plant species.