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Molecular phylogeny of tribe Schismatoglottideae (Araceae) based on two plastid markers and recognition of a new tribe, Philonotieae, from the neotropics
Author(s) -
Wong Sin Yeng,
Boyce Peter C.,
bin Othman Ahmad Sofiman,
Pin Leaw Chui
Publication year - 2010
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.1002/tax.591012
Subject(s) - polyphyly , tribe , biology , monophyly , sister group , genus , maximum parsimony , molecular phylogenetics , botany , clade , araceae , evolutionary biology , phylogenetic tree , genetics , sociology , gene , anthropology
Tribe Schismatoglottideae comprises one large genus, Schismatoglottis , and six small 'satellite' genera. A combined molecular phylogenetic analysis of matK , the 3′ portion of the trnK intron, and trnL ‐ F sequence data was carried out on 77 taxa representing all genera in the tribe, all informal groups in Schismatoglottis , together with sister tribe Cryptocoryneae, and outgroups from Araceae. Analyses of combined datasets with parsimony, maximum likelihood, and Bayesian methods revealed tribe Schismatoglottideae to be a polyphyletic assemblage. Neotropical Schismatoglottis is shown to be sister to the palaeotropical Schismatoglottideae + Cryptocoryneae. Schismatoglottis acuminatissima is a sister clade to the rest of the Schismatoglottideae. Palaeotropical Schismatoglottis is unsupported as a monophyletic genus. A new neotropical tribe of Araceae, Philonotieae S.Y. Wong & P.C. Boyce, sister to Cryptocoryneae + palaeotropical Schismatoglottideae, is proposed.