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Type: Article
Published: 2015-03-17
Page range: 284–288
Abstract views: 20
PDF downloaded: 1

A new species of Philodendron subg. Pteromischum (Araceae) from the Paraná River, Brazil

Universidade Federal do Paraná, Setor de Ciências Biológicas, Centro Politécnico, Programa de Pós Graduação em Botânica, Jardim da Américas, Curitiba—PR, 81531-980. C.P. 19031. Brazil.
Universidade Estadual do Oeste do Paraná, CCBS, Rua. Universitária, 2069, Cascavel, PR. Brazil.
Universidade Federal do Rio de Janeiro, CCS, Instituto de Biologia, Departamento de Botânica, Av. Carlos Chagas Filho, 373 - Sala A1-088 - Bloco A, Ilha do Fundão, Rio de Janeiro, RJ, CEP 21941-902, Brazil.
aroids Paraná river Southern Brazil taxonomy

Abstract

A new species of Philodendron subg. Pteromischum was found growing along the Paraná River and it is here described and illustrated. Philodendron rheophyticum is similar to P. flumineum from which it differs by its obscure lateral veins, by having an obovate leaf blade, longer spadix and pistils with 3-4 locules. Philodendron rheophyticum is also similar to P. sonderianum but from which it can be distinguished by its obscure primary lateral veins, by having upright closed sheath, obovate leaf shape, longer length of spathe and petiole.