02387nas a2200253 4500008004100000020001400041245017000055210006900225300001200294520156400306653001801870653002401888653001501912653001501927653001301942100001401955700001501969700001401984700002201998700002002020700001802040700002702058856004802085 2013 eng d a1759-683100aReassessing the taxonomic status of two enigmatic Desmos species (Annonaceae): Morphological and molecular phylogenetic support for a new genus, Wangia0 aReassessing the taxonomic status of two enigmatic iDesmos ispeci an/a-n/a3 aThe systematic position of two enigmatic Annonaceae species from China, Desmos saccopetaloides and Desmos yunnanensis, has been controversial, with both species having been transferred between several different genera within subfamilies Annonoideae and Malmeoideae. Phylogenetic analyses of eight chloroplast regions (matK, ndhF, ndhF-rpl32, psbA-trnH, rbcL, rpl32-trnL, trnL-F, and ycf1; ca. 9.2 kb, 66 taxa) unambiguously placed D. saccopetaloides in a subclade of tribe Miliuseae, nested among the genera Monoon, Neo-uvaria, Phaeanthus, Sageraea, and Stelechocarpus. This relationship was also supported by endosperm rumination patterns in the seed; other morphological characters furthermore indicated that D. saccopetaloides has closer affinities with Monoon, Neo-uvaria, and Phaeanthus rather than either Sageraea or Stelechocarpus. Desmos saccopetaloides is distinguished from these genera by its leaf-opposed inflorescences, sepaloid outer petals, saccate inner petals with basal glandular tissue, moniliform monocarps with uniseriate seeds, and rectangular disulculate pollen with two “cryptoapertures”. On the basis of the combined molecular phylogenetic and morphological data, we propose a new genus, Wangia, to accommodate D. saccopetaloides. The molecular phylogenetic analyses furthermore indicated that Desmos yunnanensis belongs to the genus Dasymaschalon: examination of the type collections revealed that it is conspecific with Dasymaschalon obtusipetalum, although the combination Dasymaschalon yunnanense has nomenclatural priority.10aDasymaschalon10amolecular phylogeny10amorphology10aPhaeanthus10ataxonomy1 aGuo, Xing1 aWang, Jing1 aXue, Bine1 aThomas, Daniel, C1 aSu, Yvonne, C F1 aTan, Yun-Hong1 aSaunders, Richard, M K uhttps://annonaceae.myspecies.info/node/514701822nas a2200241 4500008004100000020001400041245015400055210006900209260002900278300001000307490000800317520102200325653001901347653002401366653001701390653001601407653001601423100001701439700002001456700002201476700002701498856005501525 2010 eng d a1095-833900aMolecular phylogenetics of Uvaria (Annonaceae): relationships with Balonga, Dasoclema and Australian species of Melodorum0 aMolecular phylogenetics of iUvaria iAnnonaceae relationships wit bBlackwell Publishing Ltd a33-430 v1633 aAn extended molecular phylogenetic analysis of Uvaria (Annonaceae) is presented, using maximum parsimony, maximum likelihood and Bayesian methods, based on sequences of four plastid DNA regions (matK, psbA-trnH spacer, rbcL and trnL-F). The additional taxa include the monotypic West African genus Balonga, the monotypic South-East Asian genus Dasoclema and seven Australian representatives of the genus Melodorum. The results indicate that all of these taxa are nested within a well-supported clade otherwise consisting of Uvaria species, indicating that their taxonomic treatment needs to be reassessed. The distinguishing morphological characteristics of the taxa are re-evaluated and interpreted as specialized adaptations of the basic Uvaria structure. The genus Uvaria is accordingly extended following the transfer of these species, necessitating six new nomenclatural combinations and two replacement names. © 2010 The Linnean Society of London, Botanical Journal of the Linnean Society, 2010, 163, 33–43.10aclassification10amolecular phylogeny10anomenclature10aplastid DNA10aSYSTEMATICS1 aZhou, Linlin1 aSu, Yvonne, C F1 aChalermglin, Piya1 aSaunders, Richard, M K uhttp://dx.doi.org/10.1111/j.1095-8339.2010.01045.x