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The genus Philodendron (Araceae) in the state of Paraná, Brazil

Abstract

This work presents the flora of the genus Philodendron (Araceae) in the Paraná state, Brazil. Thirteen species were recorded, two of which are new: P. appendiculatum, P. bipinnatifidum, P. camposportoanum, P. corcovadense, P. crassinervium, P. eximium, P. loefgrenii, P. meridionale, P. missionum, P. obliquifolium, P. propinquum, P. rheophyticum and P. roseopetiolatum. The Philodendron species were found in the three main formations of Atlantic forest in the Paraná state: five species in the Seasonal Semideciduous Forest, seven species in the Araucaria Forest and in the Ombrophilous Dense Forest, which recorded the major representativeness, 11 species were recorded. Moreover, Ombrophilous Dense Forest showed a high endemism, with four exclusive species to this formation. Three species were considered critically endangered in the Paraná state: P. camposportoanum, P. eximium and P. roseopetiolatum. We present an identification key, photos, and illustrations of the diagnostic characters and taxonomic comments for each species.

Key words:
Atlantic Forest; Philodendron; imbe; floristic inventory; taxonomy

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