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Cladistic Analysis of the Briza Complex (Poaceae, Poeae)
Author(s) -
Bayón Néstor David
Publication year - 1998
Publication title -
cladistics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.323
H-Index - 92
eISSN - 1096-0031
pISSN - 0748-3007
DOI - 10.1111/j.1096-0031.1998.tb00339.x
Subject(s) - monophyly , cladogram , cladistics , paraphyly , biology , botany , taxon , zoology , phylogenetics , clade , biochemistry , gene
The Briza complex comprises 23 species from South America, Mesoamerica and Europe. They constitute a monophyletic group because of the tendency of the spikelets to be dorsiventrally compressed. A cladistic analysis of the complex was performed using 32 characters from morphology. The terminal taxa were the species of the genera Briza, Calotheca, Microbriza, Poidium and Rhomboelytrum. Dactylis and Arrhenatherum were chosen to root the cladograms. Results of the cladistic analysis of the complex provide support for the ideas of Nicora and Rugolo (1981, Darwiniana 23(1), 279–309): Briza, Calotheca, Microbriza, Poidium and Rhomboelytrum are supported as monophyletic groups. Within Briza , only the Chascolytrum group appears monophyletic, while the Briza and Uniolae groups are paraphyletic. Poidium ambiguum , sometimes placed in Poa , is considered here as Poidium .