02097nas a2200253   4500008004100000022001400041245013800055210006900193300001400262490000700276520126100283100002301544700002601567700002701593700002401620700001801644700001701662700002801679700002501707700002001732700001401752700002201766856005501788       2018                        eng d  a0003-384700aGenus Huberantha (Annonaceae) Revisited: Erection of Polyalthiopsis, a New Genus for H. floribunda, with a New Combination H. luensis0 aGenus Huberantha Annonaceae Revisited Erection of Polyalthiopsis  a121–1360 v553 aThe identity of an enigmatic species Huberantha floribunda (Annonaceae) is reassessed using molecular phylogenetic analyses of up to seven combined plastid markers (matK, ndhF, rbcL, ycf1 exons; trnL intron; trnL-trnF, psbA-trnH intergenic spacers), constituting up to ca. 7 kbp. Huberantha floribunda does not fall into Huberantha clade, but is retrieved as the sister group of Miliusa with no support, necessitating the recognition of a new genus, to accommodate this species. Polyalthiopsis Chaowasku gen. nov. along with Huberantha and Miliusa form an unsupported to weakly supported clade within the tribe Miliuseae. Morphology of Polyalthiopsis is somewhat intermediate between morphologies of Huberantha and Miliusa. It primarily differs from Huberantha by often possessing unequal petal whorls and a seed raphe that is broadly grooved and partially slightly raised in the middle. Polyalthiopsis differs from Miliusa mainly by having a dilated truncate connective apex of the stamens and outer petals that are much larger than the sepals. In addition, Huberantha luensis (Pierre) Chaowasku, a new combination for Polyalthia luensis is made based on an integrative approach of morphological examination coupled with molecular phylogenetic inferences.1 aChaowasku, Tanawat1 aDamthongdee, Anissara1 aJongsook, Hathaichanok1 aNuraliev, Maxim, S.1 aNgo, Dung, T.1 aLe, Hung, T.1 aLithanatudom, Pathrapol1 aOsathanunkul, Maslin1 aDeroin, Thierry1 aXue, Bine1 aWipasa, Jiraprapa  uhttp://www.bioone.org/doi/abs/10.5735/085.055.011403217nas a2200193   4500008004100000022001400041245016200055210006900217300001400286520251900300100002302819700002602842700002702868700001802895700001702913700001802930700001902948856005602967       2018                        eng d  a0373-296700aEnlarging the monotypic Monocarpieae (Annonaceae, Malmeoideae): recognition of a second genus from Vietnam informed by morphology and molecular phylogenetics0 aEnlarging the monotypic Monocarpieae Annonaceae Malmeoideae reco  a261–2753 aChaowasku, T., A. Damthongdee, H. Jongsook, D.T. Ngo, H.T. Le, D.M. Tran & S. Suddee (2018). Enlarging the monotypic Monocarpieae (Annonaceae, Malmeoideae): recognition of a second genus from Vietnam informed by morphology and molecular phylogenetics. Candollea 73: 261–275. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2018v732a11 Recent botanical expeditions in central Vietnam yielded an unknown species of Annonaceae that could not be confidently identified to subfamily, tribe, and genus. Preliminary BLAST® searches based on plastid data have suggested that this taxon is genetically closely-related to the following tribes of subfamily Malmeoideae: Malmeeae, Fenerivieae, Maasieae, Phoenicantheae, Dendrokingstonieae, Monocarpieae, and Miliuseae. Using representatives of Piptostigmateae, another tribe of Malmeoideae, as outgroups and including representatives of all other tribes of Malmeoideae, molecular phylogenetic analyses of seven combined plastid markers (rbcL, matK, ndhF, ycf1 exons; trnL intron; trnL-trnF, psbA-trnH intergenic spacers) inferred the enigmatic Vietnamese taxon as belonging to the monotypic tribe Monocarpieae. Detailed morphological comparisons between this taxon and its sister group, Monocarpia Miq., warranted the recognition of a second genus of Monocarpieae to accommodate our unknown taxon: Leoheo Chaowasku with a single species, Leoheo domatiophorus Chaowasku, D.T. Ngo & H.T. Le. The morphology of the new genus agrees well with the diagnostic traits of Monocarpieae, e.g., a percurrent tertiary venation of the leaves, a highly reduced number of carpels per flower, enlarged and lobed stigmas, multiple ovules/seeds per ovary/monocarp, considerably large monocarps with a hardened pericarp when dry, and spiniform ruminations of the endosperm. However, the new genus does not exhibit two characteristic features of Monocarpia: terminal inflorescences and generally distinct intramarginal leaf veins. In addition, the new genus possesses three autapomorphic characters: hairy domatia on the lower leaf surface, longitudinal ridges on the monocarp surface, and subsessile monocarps with a stout stipe. The tribe Monocarpieae is consequently enlarged to include the genus Leoheo. The enlarged Monocarpieae, along with the recently established monotypic tribe Phoenicantheae and two other related tribes, Dendrokingstonieae and Miliuseae, are discussed. Received: November 4, 2017. Accepted: August 30, 2018. First published online: November 23, 2018.1 aChaowasku, Tanawat1 aDamthongdee, Anissara1 aJongsook, Hathaichanok1 aNgo, Dung, T.1 aLe, Hung, T.1 aTran, Duc, M.1 aSuddee, Somran  uhttp://www.bioone.org/doi/abs/10.15553/c2018v732a1101673nas a2200145   4500008004100000022002500041245007100066210006800137300001400205490000700219520108900226100002601315700002301341856016301364       2018                        eng d  a0511-9618, 1868-639700aMiliusa chantaburiana (Annonaceae), a new species from SE Thailand0 aMiliusa chantaburiana Annonaceae a new species from SE Thailand  a293–3010 v483 aMiliusa chantaburiana Damthongdee & Chaowasku, a new species of Annonaceae from SE Thailand, is described and illustrated. It belongs to a clade with campanulate flowers and inner petals that are generally tightly appressed from the base to more or less the midpoint at anthesis. The new species is remarkable in possessing a strongly recurved apex of the inner petals at anthesis and can be principally differentiated from its morphologically closest species, M. pumila Chaowasku and M. filipes Ridl., both from Peninsular Thailand, by the higher number of stamens and carpels per flower and horseshoe-shaped stigmas. Miliusa chantaburiana is also unique in having a 6-base-pair insertion in the plastid matK sequence. A revised key to species in the campanulate-flowered clade in Thailand is given.Citation: Damthongdee A. & Chaowasku T. 2018: Miliusa chantaburiana (Annonaceae), a new species from SE Thailand. – Willdenowia 48: 293–301. doi: https://doi.org/10.3372/wi.48.48208Version of record first published online on 24 August 2018 ahead of inclusion in August 2018 issue.1 aDamthongdee, Anissara1 aChaowasku, Tanawat  uhttps://bioone.org/journals/Willdenowia/volume-48/issue-2/wi.48.48208/Miliusa-chantaburiana-Annonaceae-a-new-species-from-SE-Thailand/10.3372/wi.48.48208.full02606nas a2200181   4500008004100000245014900041210006900190300001400259490000700273520193400280100001402214700001802228700002202246700002302268700001902291700002702310856008702337       2018                        eng d00aA new Annonaceae genus, Wuodendron, provides support for a post-boreotropical origin of the Asian-Neotropical disjunction in the tribe Miliuseae0 anew Annonaceae genus Wuodendron provides support for a postboreo  a250–2660 v673 aRecent molecular and morphological studies have clarified generic circumscriptions in Annonaceae tribe Miliuseae and resulted in the segregation of disparate elements from the previously highly polyphyletic genus Polyalthia s.l. Several names in Polyalthia nevertheless remain unresolved, awaiting assignment to specific genera, including Polyalthia litseifolia. Phylogenetic analyses of seven chloroplast regions (atpB-rbcL, matK, ndhF, psbA-trnH, rbcL, trnL-F, ycf1; ca. 8.3 kb, 116 accessions, including representatives of all currently accepted genera in subfamily Malmeoideae) unambiguously placed Polyalthia litseifolia in a clade with three accessions from Thailand, which have previously been shown to represent an undescribed genus sister to the Neotropical clade (Desmopsis, Sapranthus, Stenanona, Tridimeris) in the predominantly Asian tribe Miliuseae. The collective clade is sister to Meiogyne. Polyalthia litseifolia shares several diagnostic characters with most species in the Neotropical genera and Meiogyne, including: petals that are similar in shape and size in both whorls; multiple ovules per ovary in one or two rows; and lamelliform endosperm ruminations. It is distinct in being deciduous, bearing subpetiolar buds and having inflorescences growing from the leaf scar of the dropped leaves. Morphological comparisons and phylogenetic analyses corroborate its recognition as a new genus, which is formally described and illustrated here as Wuodendron. Polyalthia litseifolia is furthermore found to be conspecific with Desmos praecox, and the latter name is used as the basis for the name of the type. Molecular divergence time estimates under an uncorrelated lognormal relaxed clock place the Wuodendron-Neotropical clade split within the Miocene (ca. 14–12 Ma), highlighting the importance of post-boreotropical dispersal and vicariance in shaping intercontinental tropical disjunctions in Annonaceae.1 aXue, Bine1 aTan, Yun-Hong1 aThomas, Daniel, C1 aChaowasku, Tanawat1 aHou, Xue-Liang1 aSaunders, Richard, M K  uhttps://www.ingentaconnect.com/contentone/iapt/tax/2018/00000067/00000002/art00003