Jepson Flora Project: Jepson Interchange for California Floristics    
click for enlargement
Lycopersicon esculentum Mill.

Information from the Index of California Plant Names (ICPN)
Current Jepson Flora Project Synonyms Solanum lycopersicum L.
Initial Editorial Analysis Nov 1 2001
Source of Report for California The Jepson Manual [Ed. 1]
Initial Editorial Comments author citation uncertain, Mill. in Kartesz & Meacham, International Plant Names Index-Gray Card Index, IPNI-APNI, probably IPNI-Index Kewensis
Editorial Recommendation author citation to be checked [resolved]
Correspondence and Comments Subsequent to Initial Analysis
Correspondence 1 30 Jul 2007 e-mail from Jeff Greenhouse see Comment 1
Editorial Comments 1 Correspondence 1 indicates that Lycopersicon esculentum Mill. (The Gardeners Dictionary: . . . eighth edition no. 2. 1768) is a conserved name, as indicated in Taxon 32: 310 (1983). [Therefore, author citation corrected to Lycopersicon esculentum Mill., from Lycopersicon esculentum L. previously in this Index, 16 Aug 2007.]
Correspondence 2 4 Mar 2014 e-mail from Michael G. Simpson see Comment 2
Editorial Comments 2 Correspondence 2 is a query from Mike Simpson about the fact that Lycopersicon esculentum Mill. and Lycopersicon peruvianum (L.) Mill. are both treated as such in The Jepson Manual [Ed. 2], as the only two members of Lycopersicon in CA, even though other workers appear to have been treating both taxa as members of Solanum, as Solanum lycopersicum L. and Solanum peruvianum L. respectively, since before The Jepson Manual [Ed. 2] was published. [Lycopersicon esculentum Mill. (1768) was conserved in ICBN (Berlin Code, 1988) against Lycopersicon lycopersicum (L.) H. Karst. (1882), despite the fact that the required two-thirds majority was not quite achieved by the General Committee on Botanical Nomenclature (the vote was 7 to 5 in favor of conservation), and a full International Botanical Congress rarely if ever had failed to adopt a decision rendered by a General Committee on Botanical Nomenclature. The case for conservation was based primarily on the fact that Lycopersicon lycopersicum (L.) H. Karst., based on Solanum lycopersicum L. (1753), has been controversial with respect to the issue of tautonymy (Art. 23.4, Melbourne Code states that "The specific epithet ... may not exactly repeat the generic name (a designation formed by such repetition is a tautonym)"), with one argument stating that because "Lycopersicon" and "lycopersicum" are not identical they are not tautonymic, and another stating that because they are orthographic variants of essentially the same word ("Lycopersicon" is derived from Greek, "lycopersicum" from Latin) they are effectively tautonymic and therefore not permitted, and possibly also because Lycopersicon esculentum Mill. was and is such a well known -- possibly the best known -- name for the tomato. Of course, when treated in Solanum, there is no question that Solanum lycopersicum L. is the correct name. As for the taxonomy, a series of molecular phylogenetic investigations beginning about 20 years ago have shown unambiguously that Lycopersicon is deeply nested within a monophyletic Solanum (see Peralta et al. 2008 Taxonomy of wild tomatoes and their relatives (Solanum sections Lycopersicoides, Juglandifolia, Lycopersicon; Solanaceae). Systematic Botany Monographs 84: 1--186.).
Pending data Solanum lycopersicum L. may become the accepted name for Lycopersicon esculentum Mill.
Editorial Summary and Current Status
Editorial Summary probable rejection, different genus since The Jepson Manual [Ed. 2]
Current Status JFP-2, accepted name for taxon naturalized in CA
Current Status Authority The Jepson Manual [Ed. 1]
List of names for this Current Status category
List of ICPN names in Lycopersicon
List of names from ICPN, Hrusa's Crosswalk, and Jepson Flora in Lycopersicon

Resources of the Jepson Flora Project: External links:
·Distribution maps: County distribution based on CCH specimens
Manual imageJepson eFlora
link image
Manual imageArchived Indexes from The Jepson Manual (1993; TJM1)
Site Search Search this site in Google for other references
calphotos logo 2Cal Photos images
Common names
link image IPNI
link image Tropicos Taxonomic information from the Missouri Botanical Garden
Calflora: Taxon report · Distribution · Observations
link image KBD Kew Bibliographic Database
Google Scholar Google Scholar
Google Books
link image JSTOR Plant Science
Please use this Google Form for Feedback