Abstract
The species of Tibouchina are herbaceous, shrubby or arboreal, and are frequent in open or regenerating areas in vegetation types in the state of Paraná. They can be recognized by the diplostemonous flowers, with two unequal cycles of stamens, these with ventral, bilobed appendages on the connective, by the ovary covered by trichomes at its apex, and by the capsular fruits with cochleate and tuberculate seeds. In Paraná the genus has 30 species, from which 26 are native, including two endemics, and the other four are cultivated. Here we present an illustrated key, descriptions, taxonomic comments, specimen lists and data on the distribution of the species.
Key-words:
floristics; Melastomeae; taxonomy