Trichocline maxima (Compositae, Mutisieae) a rare Pampean daisy rediscovered after 70 years in Uruguay

Trichocline maxima was considered probably extinct but has been rediscovered in northern Uruguay after almost 70 years since its last record in this country. We provide an updated description of the species, an indication of a lectotype and we discuss morphology, taxonomy, nomenclature, geographical distribution, and conservation status of the species. An identification key for the species of the genus in Uruguay and Brazil is also presented.Trichocline maxima (Compositae, Mutisieae) redescoberta: Taxonomia, lectotipificação, e estado de conservação de uma Asteraceae rara e endêmica do Pampa. Trichocline maxima era considerada como provavelmente extinta, mas foi redescoberta no norte do Uruguai após quase 70 anos desde sua última coleta neste país. Neste trabalho são fornecidas descrição atualizada da espécie, a indicação de um lectótipo e discussão sobre aspectos morfológicos, taxonômicos, nomenclaturais, de distribuição geográfica e estado de conservação. Também é presentada uma chave de identificação para as espécies do gênero no Uruguai e no Brasil

Cytisus scoparius (Fam. Fabaceae) in southern Brazil - first step of an invasion process?

The occurrence of Scotch broom Cytisus scoparius (L.) Link (Fabaceae), is reported for the first time in Brazil. The species has been registered in the species-rich Campos Sulinos grasslands, in the Campos de Cima da Serra, and in the Serra do Sudeste. Naturalizing populations were frequently formed in natural habitats near to human settlements, where prevailing land uses and disturbances facilitate dispersal and establishment. The plant is an invasive species that has globally caused significant damage to biodiversity and economic losses. In Brazil, the species has a strong potential for spreading into a wide range of ecosystems. The Atlantic Forest biome and part of the Pampa biome, together known as the Campos Sulinos, represent optimal areas for the species. Features of the observed populations and recommendations for management are presented