Novelties in Persicaria (Polygonaceae): description of a narrowly endemic new species from southern Brazil, and typification of the name Polygonum minus

Abstract

Este estudo foi realizado no âmbito do projeto PELD BISC.in the present paper. The locus classicus of the new species is well-known for plant endemisms. A complete morphological description, original pictures, a distribution map, and a morphological comparison with the similar Eurasian species P. minor (≡ Polygonum minus) are given. The name Polygonum minus is lecto- and epitypified on, respectively, a Morison’s illustration and a specimen preserved at BM.CNPq/Capes/FAPs/BC-Fundo Newton/PELD nº 15/2016 and FAPESC/2018TR092