Morelloid Solanum species from Argentina

All specimen data used in the following publication: 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 XX: in press. Abstract. Since the publication of the Solanaceae treatment in Flora Argentina in 2013 exploration in the country 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 and Tucumán) and Bolivia (Chuquisaca and Tarija), _S. marmoratum_ Barboza & S.Knapp sp. nov., from central Argentina in Catamarca, La Pampa, La Rioja and San Luis, and _S. tiinae_ Barboza & S.Knapp sp. nov., from the mountains of Jujuy, Salta and Tucumán. We provide descriptions, illustrations and distribution maps for all new taxa. A table of nomenclatural changes and additional taxa now known to occur in Argentina summarizes additions and changes since the Flora Argentina. We also provide an updated key, including all new taxa for the country, to facilitate identification and further exploration.