ABSTRACT - (Tibouchina sect. Pleroma (D. Don) Cogn. (Melastomataceae) in São Paulo state). Tibouchina Aubl. (Melastomeae), with about 308 species occupies a central position among neotropical Melastomataceae with capsular fruits. Several of these species are mainly concentrated in the Southeast and West-central Brazil. Tibouchina is distributed in 11 sections. This paper aimed to study the species of Tibouchina sect. Pleroma in the state of São Paulo. The following species are recognized: T. chamissoana Cogn., T. clavata (Pers.) Wurdack, T. estrellensis (Raddi) Cogn., T. grandifolia Cogn., T. granulosa (Desr.) Cogn., T. langsdorffiana (Bonpl.) Baill., T. martialis (Cham.) Cogn., T. riedeliana Cogn., T. serrana P. Guimarães & A. B. Martins, T. stenocarpa (Schrank et Mart. ex DC.) Cogn., T. ursina (Cham.) Cogn. e T. urvilleana (DC.) Cogn. These species are mainly concentrated on the littoral region of the state. We provide a dichotomus key, species descriptions and illustrations.
Tibouchina sect. Pleroma; Melastomataceae; São Paulo state
