The following links provide access to databases with taxonomic and related information about Lactuca species.
Web portal developed by the International Cichorieae Network (ICN), including data on over 150 Lactuca species. Choose 'ICN portal' on the main menu, enter Lactuca in the 'Search Taxa' box and select the taxon of interest. Covered subjects include a general species description, synonymy information, images, specimens and distributional and ecological data.
Euro + Med Plantbase integrates and critically evaluates information from Flora Europaea, Med-Checklist, the Flora of Macaronesia, and from regional and national floras and checklists from the area as well as additional taxonomic and floristic literature.
On-line crop plant species database developed at the Leibniz Institute of Plant Genetics and Crop Plant Research (IPK). Entering Lactuca in the 'Search' box presents over 80 plant names with information about nomenclature and synonymy, common names in different languages, spontaneous distribution, regions of cultivation and uses. In addition, images, references, ancestral species, and notes on the phylogeny, variation and history are provided.
Curated classification and nomenclature for organisms that have molecular data in the databases of the National Center for Biotechnology Information (NCBI). Entering Lactuca in the 'Search for' box presents nearly 30 records with information about plant names, synonymy and phylogenetic lineages, while access is provided to available data on genes, proteins and sequences.
A working list of all known plant species. It aims to be comprehensive for species of Vascular plant (flowering plants, conifers, ferns and their allies) and of Bryophytes (mosses and liverworts).
Botanical information system of the Missouri Botanical Garden. Entering Lactuca in the 'Quick Name Search' box lists over 400 records with information on plant names, synonymy, specimens, chromosome number, distribution and use. In addition, images and literature references are provided.