The Morelloid clade of Solanum L. (Solanaceae) in Argentina: nomenclatural changes, three new species and an updated key to all taxa.

Sandra Knapp,Franco Chiarini,Juan J Cantero,Gloria E Barboza

doi:10.3897/phytokeys.164.54504

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, Salta and Tucumán) and Bolivia (Chuquisaca and Tarija), S. marmoratum Barboza & S. Knapp, sp. nov., from central Argentina in Catamarca, La Pampa, La Rioja, San Juan and San Luis, and S. tiinae Barboza & S. Knapp, sp. nov., from the mountains of Jujuy, La Rioja, 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.

Highlights

Solanum L., with 1,400 species, is one of the largest genera of flowering plants (Frodin 2004)
Of the 62 species of South American morelloids, 38 species are found in Argentina with 8 species occurring as country endemics (Table 1; 37 with 7 endemics excluding S. concarense Hunz., see below), making the country a hotspot for morelloid diversity
Our species circumscriptions are based on revision of herbarium material accompanied by detailed examination of living plants in the field and, where possible, in cultivation at the Instituto Multidisciplinario de Biología Vegetal (IMBIV) in Córdoba, Argentina

Summary

Introduction

Solanum L., with 1,400 species, is one of the largest genera of flowering plants (Frodin 2004). S. aloysiifolium, S. americanum, S. annuum, S. caesium, S. chenopodioides, S. cochabambense, S. echegarayi, S. fiebrigii, S. glandulosipilosum, S. huayavillense, S. hunzikeri, S. michaelis, S. nitidibaccatum, S. palitans, S. physalidicalyx, S. physalifolium, S. pilcomayense, S. profusum, S. riojense, S. salamancae, S. salicifolium, S. sarrachoides, S. sinuatiexcisum, S. sinuatirecurvum, S. tiinae, S. tripartitum, S. tweedieanum, S. weddellii, S. zuloagae

Results

Conclusion