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New species of Philodendron (Araceae) from the Brazilian Atlantic Forest


A new species of Araceae, Philodendron madalenense, endemic to the Atlantic Forest of Southeastern Brazil, is described. It belongs to the subgenus Philodendron sect. Macrobelium due to the cordate leaf blade, inflorescence longer than 5 cm in length, and ovary with 6-12 locules, basal placentation, and 3-4 ovules per locule. This species is rare, endemic to the state of Rio de Janeiro, and it is morphologically related to Philodendron follii.

Key words:
conservation; endemism; Fluminense flora; Santa Maria Madalena municipality; section Macrobelium

Instituto de Pesquisas Jardim Botânico do Rio de Janeiro Rua Pacheco Leão, 915 - Jardim Botânico, 22460-030 Rio de Janeiro, RJ, Brasil, Tel.: (55 21)3204-2148, Fax: (55 21) 3204-2071 - Rio de Janeiro - RJ - Brazil