Taxonomic novelties in the Asteraceae-Inuleae with the description of a new genus, Galgera separate from Laggera

Phylogenetic analyses of DNA sequences from the plastid gene ndhF from a large number of species of the Asteraceae tribe Inuleae reveal the need for some taxonomic and nomenclatural changes. The genera Laggera, Pentanema and Pluchea as presently understood are all polyphyletic. It is concluded that the old name Vicoa should be used for three species of Pentanema, and a new species of the genus is described. Two species of Cyathocline (previously recognized as a genus in the tribe Astereae) are confirmed to be close to Blumea of the Inuleae-Inulinae and are included here in the latter genus, requiring a new combination. The new genus Galgera, sister to Antiphiona, is described for a former Laggera species.