TreeBASE Search-Trees for study 1148

@ARTICLE{TreeBASE2Ref17356, author = {Gisela Sancho}, title = {Phylogenetic relationships in the genus Onoseris (Asteraceae,Mutisieae) inferred from morphology.}, year = {2004}, keywords = {}, doi = {10.1600/036364404774195610}, url = {}, pmid = {}, journal = {Systematic Botany}, volume = {29}, number = {2}, pages = {432--447}, abstract = {Onoseris (Asteraceae, Mutisieae) is a genus of 31 species distributed from Mexico to Argentina through the Andes with most species occurring in Peru. A phylogenetic analysis was based on a detailed morphological study. Urmenetea is used as the outgroup. Three most parsimonious cladograms are obtained based on the complete data set using Paup 4.0b8. Two monophyletic groups are recognized: 1. Species with petiolate leaves, blades palmately veined blades with hastate base, and few-headed capitulescences, rarely thyrsoid capitulescences (O.acerifolia, O. alata, O. brasiliensis, O. cabrerae, O. castelnaeana, O. costaricensis, O. donnell-smithii, O. drakeana, O. fraterna, O. hastata, O. macbridei, O. onoseroides, O. peruviana, O. purpurea, O. sagittata, O. silvatica, and O. speciosa). 2. Species with sessile or subsessile leaves, elliptic and pinnately veined blades with attenuate base, and solitary capitula (O. albicans, O. amplexicaulis, O annua, O. chrysactinioides, O cumingii, O. gnaphalioides, O. humboldtiana, O.hyssopifolia, O.linearifolia, O. lopezii, O. minima, O. odorata, O. salicifolia, and O. weberbaueri). These monophyletic groups are recognized as subgenera:Onoseris and Hipposeris respectively. Onoseris salicifolia is chosen as the lectotype of Onoseris subg. Hipposeris Corolla polymorphism within Onoseris shows that corolla morphology alone cannot be used to distinguish between subtribes Mutisiinae and Gochnatiinae. Biogeographically, although Onoseris has a continuous distribution from Southern Andes to Northern Andes and Central America, but no individual species is disytributedon both sides of the Huancabamba zone. A group of species in subgenus Onoseris distributed in Central America and Brazil are regarded as phylogenetically derived (e.g. O. brasiliensis, O. costaricensis, O. onoseroides).} }