Pollen grains from seven genera and 45 species of Melastomataceae (Huberia semisserrata DC., Leandra amplexicaulis DC., L. aurea Cogn., L. australis Cogn., L. cardiophylla Cogn., L. hirta Raddi, L. hirtella Cogn., L. mosenii Cogn., L. purpurascens Cogn., L. refracta Cogn., L. scabra DC., L. sericea DC., Miconia cabussu Hoehne, M. candolleana Triana, M. castanaeflora Naud., M. conferta Cogn., M. cubatanensis Hoehne, M. depauperata Gardn., M. hyemalis A. St.-Hil. et Naud., M. inaequidens Naud., M. latecrenata Naud., M. oblongifolia Cogn., M. petropolitana Cogn., M. pyrifolia Naud., M. sellowiana Naud., M. theaezans Cogn., M. urophylla DC., M. valtherii Naud., Mouriri chamissoana Cogn., Ossaea brachystachya Triana, Pleiochiton ebracteatum Triana, Tibouchina adenostemon Cogn., T. cerastifolia Cogn., T. chamissoana Cogn., T. clinopodifolia Cogn., T. frigidula Cogn., T. gracilis Cogn., T. granulosa Cogn., T. martialis Cogn., T. mutabilis Cogn., T. pulchra Cogn., T. raddiana Cogn., T. sellowiana Cogn., T. trichopoda Bail., T. velutina Cogn.) occuring in the "Reserva do Parque Estadual das Fontes do Ipiranga" were examined. Description and observations are presented for all studied species, as well as a key of species based on pollen characters, and illustrations only for some taxa.
Melastomataceae; pollen grains; pollinic flora
