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Taxonomic survey of Aureliana Sendtner, a small neotropical genus of 5 species: A. fasciculata (Vellozo) Sendt. [with 3 varieties: var. fasciculata, var. tomentella (Sendt.) Barboza et A. T. Hunz. nov. comb., and var. longifolia (Sendt.) A. T. Hunz. et Barboza nov. comb.], A. brasillana (A. T. Hunz.) Barboza et A. T. Hunz. nov. comb., A. tomentosa Sendt., A. velutina Sendt. and A. wettsteiniana (Witas.) A. T. Hunz. et Barboza nov. comb. The 7 taxa grow in Brazil, but 3 of them deserve a special mention: A. fasciculata var. tomentella reaches southeastern Paraguay and Argentina (eastern Misiones); instead A. fasciculata var. longifolia and A. fasciculata var. fasciculata show a rather peculiar distribution because aside of their eastern area, both have been collected in Bolivia (Santa Cruz and Pando). After a discussion on the complicated taxonomical history of the genus, the authors point out its relationships with 6 allied genera of the Solaneae, above all with Capsicum L.; a key to identify these 7 genera is included as well. Each taxon is described together with remarks about their geographical distribution and affinities. Five plates and a map are included in the text. [ABSTRACT FROM AUTHOR]

Persicaria capitata (Polygonaceae, Polygonoideae, Persicarieae), a species native from Nepal, and the genus Persicaria, are newly recorded for the introduced flora of Argentina. This species occurs in different habitats at the Natural Reserve La Cumbrecita (province of Córdoba). A detailed species description and a discussion about its status in the naturalization process are included. [ABSTRACT FROM AUTHOR]