01826nas a2200241 4500008004100000022001400041245009100055210006900146260000800215300001300223490000700236520108300243653001501326653001901341653001301360653001901373100002201392700001801414700002701432700002201459700002301481856008001504 2019 eng d a2465-423X00aA revision of Meiogyne (Annonaceae) in Thailand, with descriptions of four new species0 arevision of Meiogyne Annonaceae in Thailand with descriptions of cjun a91–1070 v473 aWe review the species diversity of the Asian genus Meiogyne (Annonaceae) in Thailand. Four new species, M. anomalocarpa, M. chiangraiensis, M. gardneri, and M. maxiflora, are described. Meiogyne anomalocarpa has the widest distribution of any Meiogyne species in Thailand, but the other three species are narrowly distributed. Meiogyne anomalocarpa and M. maxiflora have the axillary inflorescences typical of the genus, but in M. chiangraiensis and M. gardneri the inflorescences are flagelliform and arise from the lower trunk, a morphology previously unreported from members of this genus. The presence of M. chiangraiensis in northern Thailand extends the range of the genus significantly northward. Meiogyne caudata is reported as new to the flora of Thailand. Several Meiogyne specimens from southernmost Thailand previously identified as M. virgata in the past by various workers were found to be more similar to M. kanthanensis, recently described from Perak, Peninsular Malaysia. A key is provided for the eight species currently recognized as occurring in the country.10aAnnonaceae10aSoutheast Asia10ataxonomy10atree diversity1 aJohnson, David, M1 aLiu, Ming-Fai1 aSaunders, Richard, M K1 aChalermglin, Piya1 aChaowasku, Tanawat uhttps://www.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/16591902361nas a2200265 4500008004100000245009300041210006900134300001400203490000700217520158500224653001501809653001701824653002101841653002801862653001101890653001701901653001501918653001301933653001801946100001401964700002001978700002201998700002702020856004802047 2012 eng d00aPruning the polyphyletic genus Polyalthia (Annonaceae) and resurrecting the genus Monoon0 aPruning the polyphyletic genus Polyalthia Annonaceae and resurre a1021-10390 v613 aThe highly polyphyletic status of the species-rich genus Polyalthia (Annonaceae) remains one of the most significant impediments to revisionary and floristic taxonomic research in the family. Although Polyalthia has recently been reduced in taxonomic scope, the remaining species in the genus still form a phylogenetically disparate and morphologically heterogeneous assemblage. We use maximum parsimony, maximum likelihood and Bayesian phylogenetic reconstructions based on chloroplast DNA sequence data (matK, rbcL, trnL-F) to show that the remaining Polyalthia species segregate into three clades: a clade sister to Miliusa; a clade that also includes all Enicosanthum and Woodiellantha species sampled, sister to Neo-uvaria; and a clade that also includes all Haplostichanthus species sampled, inferred (based on previous research) to be sister to Popowia. Diagnostic morphological and anatomical characters are evaluated for the latter two clades, and diagnostic leaf and seed characters identified. Based on these results, the generic name Monoon is resurrected for the clade that includes Enicosanthum and Woodiellantha, following the transfer of 37 species from Polyalthia s.l., 18 species from Enicosanthum and the single Woodiellantha species. The generic name Haplostichanthus is furthermore synonymised with Polyalthia s.str., necessitating nine nomenclatural changes, including six new combinations and three replacement names.10aAnnonaceae10aENICOSANTHUM10aHAPLOSTICHANTHUS10aMOLECULAR PHYLOGENETICS10aMONOON10anomenclature10aPOLYALTHIA10ataxonomy10aWOODIELLANTHA1 aXue, Bine1 aSu, Yvonne, C F1 aThomas, Daniel, C1 aSaunders, Richard, M K uhttps://annonaceae.myspecies.info/node/5688