A peer-reviewed open-access journal PhytoKeys 164: 33–66 (2020) Morelloids in Argentina 33 doi: 10.3897/phytokeys.164.54504 RESEARCH ARTICLE http://phytokeys.pensoft.net Launched to accelerate biodiversity research The Morelloid clade of Solanum L. (Solanaceae) in Argentina: nomenclatural changes, three new species and an updated key to all taxa Sandra Knapp1, Franco Chiarini2, Juan J. Cantero2,3, Gloria E. Barboza2 1 Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK 2 Museo Botánico, IMBIV (Instituto Multidisciplinario de Biología Vegetal), Universidad Nacional de Córdoba, Casilla de Correo 495, 5000, Córdoba, Argentina 3 Departamento de Biología Agrícola, Facultad de Agronomía y Ve- terinaria, Universidad Nacional de Rio Cuarto, Ruta Nac. 36, km 601, 5804, Río Cuarto, Córdoba, Argentina Corresponding author: Sandra Knapp (
[email protected]) Academic editor: L. Giacomin | Received 20 May 2020 | Accepted 28 August 2020 | Published 21 October 2020 Citation: Knapp S, Chiarini F, Cantero JJ, Barboza GE (2020) The Morelloid clade of Solanum L. (Solanaceae) in Argentina: nomenclatural changes, three new species and an updated key to all taxa. PhytoKeys 164: 33–66. https://doi. org/10.3897/phytokeys.164.54504 Abstract Since the publication of the Solanaceae treatment in “Flora Argentina” in 2013 exploration in the coun- try and resolution of outstanding nomenclatural and circumscription issues has resulted in a number of changes to the species of the Morelloid clade of Solanum L. (Solanaceae) for Argentina. Here we describe three new species: Solanum hunzikeri Chiarini & Cantero, sp. nov., from wet high elevation areas in Argentina (Catamarca, Salta and Tucumán) and Bolivia (Chuquisaca and Tarija), S.