title: Taxonomic revision of NeotropicalMurdanniaRoyle (Commelinaceae).
abstract: This study provides a taxonomic revision for the Neotropical species of the genusMurdannia. Six species are recognized as native, including a new species and a new combination, while two Asian species are recognized as invasive. We present an identification key, a table summarizing the morphologic differences among the species, a new synonym, six lectotypifications, a distribution map, and descriptions, comments and photographic plates for each species. We also provide comments on the morphology of the Neotropical species ofMurdannia, comparing them with the Paleotropical species, and a discussion of inflorescence architecture in the genus as a whole.
authors.affiliation: Universidade de São Paulo, Departamento de Botânica, Rua do Matão 277, CEP 05508-900, São Paulo, SP, Brazil; Jardim Botânico do Rio de Janeiro, Rua Pacheco Leão 915, CEP 22460-030, Rio de Janeiro, RJ, Brazil; Smithsonian Institution, NMNH, Department of Botany, MRC 166, P.O. Box 37012, Washington D.C. 20013-7012, USA.
authors.forename: Marco Octávio de Oliveira
authors.initials: MO
authors.lastname: Pellegrini
authors.affiliation: Smithsonian Institution, NMNH, Department of Botany, MRC 166, P.O. Box 37012, Washington D.C. 20013-7012, USA.
authors.forename: Robert B
authors.initials: RB
authors.lastname: Faden
authors.affiliation: Universidade Estadual de Feira de Santana, Programa de Pós-Graduação em Botânica, Avenida Transnordestina s/n, Novo Horizonte, CEP 44036-900, Feira de Santana, BA, Brazil.
authors.forename: Rafael Felipe
authors.initials: RF
authors.lastname: de Almeida
keywords: Aquatic plants; Brazil; Commelinales; Commelineae; Neotropical flora; dewflower; spiderwort