This work presents the flora of the genus Anthurium (Araceae) in Paraná State. Twelve species of Anthurium occur in the state: A. acutum, A. comtum, A. gaudichaudianum, A. hatschbachii, A. lacerdae, A. loefgrenii, A. marense, A. pentaphyllum, A. scandens subsp. scandens, A. sellowianum, A. sinuatum and A. urvilleanum. The species are distributed just only in dense rain forest, except for A. loefgrenii which also occurs in arboreal restinga, A. gaudichaudianum also found in the cerrado and the transition between dense and mixed rain forest, and A. sinuatum that occurs only in semideciduous forest. There are five endangered species in the state: A. hatschbachii and A. urvilleanum (Critically Endangered), A. sinuatum (Endangered) and A. lacerdae and A. marense (Vulnerable). This work also presents morphological novelties: the presence of trichomes in the axillary axis of the ovary of A. hatschbachii, A. lacerdae, A. marense, A. sinuatum and A. urvilleanum, and apical-axial placentation type for A. acutum. Identification key, descriptions, photos, illustrations, geographic distribution, taxonomic remarks and conservation status are given for all species.
flora; floristic survey; taxonomy
