THE GENUS OXALIS L. (OXALIDACEAE) IN RIO GRANDE DO SUL, BRAZIL

This work aims at caring out the survey of the genus Oxalis in the state of Rio Grande do Sul, offering means for the species identification. The study was carried out based on review of specialized literature and specific websites in the field of taxonomy; revision of the Herbarium; and field work throughout the state. In Rio Grande do Sul, the genus Oxalis is represented by 27 species. One of these species is a new occurrence in Rio Grande do Sul State, Oxalis subvillosa. Other of them, Oxalis lindneri, is a new record in Brazil. Analytical key, morphological descriptions, illustrations and data concerning the habitat, distribution, flowering and fruiting period are supplied.