ABSTRACT
This study consists of morphological and taxonomic treatment of the species of the genus Philodendron Schott which occur in the Ecological Reserve of Macaé de Cima, Macaé de Cima District, Municipality of Nova Friburgo, Rio de Janeiro State, Brazil. Ten species were studied: Philodendron altomacaense Nadruz et Mayo, P. appendiculatum Nadruz et Mayo, P. edmundoi Barroso, P. eximium Schott, P. fragile Nadruz et Mayo, P. hatschbachii Nadruz et Mayo, P. ochrostemon Schott, P. ornatum Schott, P. propinquum Schott and P. roseopetiolatum Nadruz et Mayo. Of which three of these species are endemic to the study area, as far as presently know - P. altomacaense, P. fragile and P. roseopetiolatum. The species names P. eximium, P. imperiale, P. dolosum and P. ornatum are lectotypified and P. ambiguum is reduced to the synonymy of P. propinquum. The taxonomic treatment includes illustrations, descriptions, geographical distribution, a dichotomous key for identification of the species, commentary on the morphology of the species, on their natural habitats, and of their conservation status according to the criteria of the International Union for Conservation of Nature and Natural Resources (IUCN).
Keywords:
Araceae; Philodendron; Taxonomy; Rio de Janeiro