Jepson Flora Project: Jepson Interchange for California Floristics    
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Solanum lycopersicum L.
SOLANACEAE
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Information from the Index of California Plant Names (ICPN)
Initial Editorial Analysis Nov 1 2001
Source of Report for California Munz, P.A. in collaboration with D. D. Keck. 1968, as cited in Kartesz & Meacham
Initial Editorial Comments listed as synonym of Lycopersicon esculentum in Munz
Correspondence and Comments Subsequent to Initial Analysis
Correspondence 1 4 Mar 2014 e-mail from Michael G. Simpson see Comment 1
Editorial Comments 1 Correspondence 1 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 addition, different genus since The Jepson Manual [Ed. 2]
Current Status JFP-2a, taxonomic or nomenclatural synonym for taxon naturalized in CA
Current Name Lycopersicon esculentum Mill.
Current Status Authority The Jepson Manual [Ed. 1] (Munz)
List of names for this Current Status category
List of ICPN names in Solanum
List of names from ICPN, Hrusa's Crosswalk, and Jepson Flora in Solanum

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