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www.ncbi.nlm.nih.gov/pmc/articles...s/PMC4023333/

Seventeen genera and 48 species, in five subtribes, are recognized in Thailand. These include 15 endemic taxa, half of which are in the largest genus, Acilepis, with others in the genera CamchayaKoyamasia, and Okia. A new monotypic genus, Pulicarioidea, is established with P. annamica, the new name for the species formerly known as Vernonia pulicarioides. New combinations are also made for Acilepis kerriiCyanthillium montanumKoyamasia curtisii and Okia pseudobirmanica. Forty-six characters including habit, leaf, flower, achene and pollen morphology were analyzed using UPGMA. Five clusters of taxa were identified. Keys to genera, species and varieties, descriptions, vernacular names, ecological data and illustrations are provided.

Keywords: Acilepis, Asteraceae, Camchaya, Cichorioideae, CyanthilliumDecaneuropsisElephantopusEthuliaGymnanthemumIodocephalopsisKoyamasiaKurziellaMonosisOkiaPseudelephantopusPulicarioidea, southeast Asia, StrobocalyxStruchiumTarlmounia