Maximum-likelihood phylogeny for 4954 species of Asterales. The data matrix was constructed using the mega-phylogeny method and includes DNA sequences for five genes: rbcL, matK, trnL-F, ndhF, and ITS. Each of the 12 major families of Asterales is labeled. We also note the placement of the "Doronicum" clade in relation to the tribe Senecioneae; although we assumed a sister relationship a priori, the phylogenetic analysis overruled this assumption, indicating that the two clades may be more distantly related. Pentaphragma, Pentaphragmataceae; Alseu, Alseuosmiaceae; Argo, Argophyllaceae; Phel, Phellinaceae.
Smith et al. BMC Evolutionary Biology 2009 9:37 doi:10.1186/1471-2148-9-37