@article {chaowasku_genus_2018, title = {Genus Huberantha (Annonaceae) Revisited: Erection of Polyalthiopsis, a New Genus for H. floribunda, with a New Combination H. luensis}, journal = {Annales Botanici Fennici}, volume = {55}, number = {1-3}, year = {2018}, pages = {121{\textendash}136}, abstract = {The 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.}, issn = {0003-3847}, doi = {10.5735/085.055.0114}, url = {http://www.bioone.org/doi/abs/10.5735/085.055.0114}, author = {Chaowasku, Tanawat and Damthongdee, Anissara and Jongsook, Hathaichanok and Nuraliev, Maxim S. and Ngo, Dung T. and Le, Hung T. and Lithanatudom, Pathrapol and Osathanunkul, Maslin and Deroin, Thierry and Xue, Bine and Wipasa, Jiraprapa} } @article {chaowasku_enlarging_2018, title = {Enlarging the monotypic Monocarpieae (Annonaceae, Malmeoideae): recognition of a second genus from Vietnam informed by morphology and molecular phylogenetics}, journal = {Candollea}, year = {2018}, pages = {261{\textendash}275}, abstract = {Chaowasku, 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{\textendash}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{\textregistered} 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.}, issn = {0373-2967}, doi = {10.15553/c2018v732a11}, url = {http://www.bioone.org/doi/abs/10.15553/c2018v732a11}, author = {Chaowasku, Tanawat and Damthongdee, Anissara and Jongsook, Hathaichanok and Ngo, Dung T. and Le, Hung T. and Tran, Duc M. and Suddee, Somran} } @article {damthongdee_miliusa_2018, title = {Miliusa chantaburiana (Annonaceae), a new species from SE Thailand}, journal = {Willdenowia}, volume = {48}, number = {2}, year = {2018}, pages = {293{\textendash}301}, abstract = {Miliusa 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. {\textendash} Willdenowia 48: 293{\textendash}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.}, issn = {0511-9618, 1868-6397}, doi = {10.3372/wi.48.48208}, url = {https://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.full}, author = {Damthongdee, Anissara and Chaowasku, Tanawat} } @article {johnson_revision_2019, title = {A revision of Meiogyne (Annonaceae) in Thailand, with descriptions of four new species}, journal = {Thai Forest Bulletin (Botany)}, volume = {47}, number = {1}, year = {2019}, month = {jun}, pages = {91{\textendash}107}, abstract = {We 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.}, keywords = {Annonaceae, Southeast Asia, taxonomy, tree diversity}, issn = {2465-423X}, doi = {10.20531/tfb.2019.47.1.13}, url = {https://www.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/165919}, author = {Johnson, David M. and Liu, Ming-Fai and Saunders, Richard M. K. and Chalermglin, Piya and Chaowasku, Tanawat} } @article {xue_new_2018, title = {A new Annonaceae genus, Wuodendron, provides support for a post-boreotropical origin of the Asian-Neotropical disjunction in the tribe Miliuseae}, journal = {Taxon}, volume = {67}, number = {2}, year = {2018}, pages = {250{\textendash}266}, abstract = {Recent 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{\textendash}12 Ma), highlighting the importance of post-boreotropical dispersal and vicariance in shaping intercontinental tropical disjunctions in Annonaceae.}, doi = {10.12705/672.2}, url = {https://www.ingentaconnect.com/contentone/iapt/tax/2018/00000067/00000002/art00003}, author = {Xue, Bine and Tan, Yun-Hong and Thomas, Daniel C. and Chaowasku, Tanawat and Hou, Xue-Liang and Saunders, Richard M. K.} } @article {5728, title = {A decade of uncertainty: Resolving the phylogenetic position of Diclinanona (Annonaceae), including taxonomic notes and a key to the species}, journal = {TaxonTaxon}, volume = {63}, number = {6}, year = {2014}, pages = {1244-1252}, isbn = {0040-0262}, author = {Erkens, Roy HJ and Chatrou, Lars W and Chaowasku, Tanawat and Westra, Lubbert Y Th and Maas, Jan W and Maas, Paul JM} } @article {5712, title = {A plastid DNA phylogeny of tribe Miliuseae: Insights into relationships and character evolution in one of the most recalcitrant major clades of Annonaceae}, journal = {American Journal of BotanyAmerican Journal of Botany}, volume = {101}, number = {4}, year = {2014}, pages = {691-709}, isbn = {0002-9122}, author = {Chaowasku, Tanawat and Thomas, Daniel C and van der Ham, Raymond WJM and Smets, Erik F and Mols, Johan B and Chatrou, Lars W} } @article {5702, title = {Molecular phylogenetic support for the taxonomic merger of Fitzalania and Meiogyne (Annonaceae): New nomenclatural combinations under the conserved name Meiogyne}, journal = {Systematic BotanySystematic Botany}, volume = {39}, number = {2}, year = {2014}, pages = {396-404}, isbn = {0363-6445}, author = {Xue, Bine and Thomas, Daniel C and Chaowasku, Tanawat and Johnson, David M and Saunders, Richard MK} } @article {5592, title = {An extended phylogeny of Pseuduvaria (Annonaceae) with descriptions of three new species and a reassessment of the generic status of Oreomitra}, journal = {Systematic BotanySystematic Botany}, volume = {35}, number = {1}, year = {2010}, pages = {30-39}, abstract = {Three new species of Pseuduvaria (Annonaceae) from Peninsular Thailand and Peninsular Malaysia are described and named as P. fragrans, P. gardneri, and P. glossopetala. A recent molecular phylogenetic study, based on 51 species (including P. fragrans), elucidated the evolutionary relationships within the genus. The present study includes P. gardneri and P. glossopetala in the phylogenetic analyses using maximum likelihood and Bayesian inference methods, based on five chloroplast regions (psbA-trnH spacer, trnL-F, matK, rbcL, and atpB-rbcL spacer). The new nomenclatural combination Pseuduvaria phuyensis is also validated in accordance with the phylogenetic analyses which show that Craibella phuyensis and Pseuduvaria form a well-supported monophyletic clade. The new species and new nomenclature combination bring the total number of species in Pseuduvaria to 56. The taxonomic status of the enigmatic monotypic genus Oreomitra from New Guinea is furthermore evaluated, and the name shown to be synonymous with Pseuduvaria.}, keywords = {classification, NEW GUINEA, PENINSULAR MALAYSIA, SYSTEMATICS, taxonomy, THAILAND}, author = {Su, Yvonne C. F. and Chaowasku, Tanawat and Saunders, Richard M. K.} } @article {4948, title = {Proposal to conserve the name Meiogyne against Fitzalania (Annonaceae) }, journal = {TaxonTaxon}, year = {2011}, author = {Chaowasku, Tanawat and Zijlstra, Gea and Chatrou, L. W.} } @article {4949, title = {(2029) Proposal to conserve the name Meiogyne against Fitzalania (Annonaceae)}, journal = {TaxonTaxon}, volume = {60}, number = {5}, year = {2011}, note = {067, 105}, author = {Chaowasku, Tanawat and Zijlstra, Gea and Chatrou, Lars W.} } @article {4940, title = {Miliusa codonantha (Annonaceae), a new species from the Indian eastern Himalaya, with a new combination, M. dioeca}, journal = {Willdenowia - Annals of the Botanic Garden and Botanical Museum Berlin-DahlemWilldenowia - Annals of the Botanic Garden and Botanical Museum Berlin-Dahlem}, volume = {43}, number = {1}, year = {2013}, pages = {101-105}, abstract = {A new species from the Indian eastern Himalaya, Miliusa codonantha, is described and illustrated. It chiefly differs from M. macrocarpa, its most morphologically similar species, in having smaller flowers and considerably fewer stamens and carpels per flower. In addition, a new combination is made for another species of Miliusa also occurring on the Indian subcontinent: M. dioeca (basionym: Uvaria dioeca). The two species as well as M. macrocarpa are placed in the previously recognized M. campanulata group. The names U. dioeca and its heterotypic synonym M. wallichiana are lectotypified.}, keywords = {INDIA, Malmeoideae, MILIUSEAE, nomenclature, SYSTEMATICS, taxonomy}, author = {Chaowasku, Tanawat} } @article {4941, title = {Phylogeny of Miliusa (Magnoliales: Annonaceae: Malmeoideae: Miliuseae), with descriptions of two new species from Malesia}, journal = {2013}, volume = {54}, year = {2013}, pages = {1-21}, type = {Annonaceae; Buton Island; identification key; Papua New Guinea; molecular phylogeny}, abstract = {The molecular phylogeny of Miliusa (Annonaceae) is reconstructed, with 27 (of ca. 50) species included, using a combination of seven plastid markers ( rbcL exon, trnL intron, trnL-F spacer, matK exon, ndhF exon, psbA-trnH spacer, and ycf1 exon) constituting ca. 7 kb. In addition, two new species of Miliusa are described from the Malesian area: M. butonensis sp. nov. from Buton Island, Indonesia and M. viridiflora sp. nov. from Papua New Guinea. The former is included in the molecular phylogenetic analysis. The reconstructed phylogeny corresponds well to the informal morphological grouping proposed earlier. A revised key to 13 Austro-Malesian species of Miliusa is provided.}, keywords = {Annonaceae, Buton Island, identification key, molecular phylogeny, Papua New Guinea}, isbn = {2118-9773|escape}}, author = {Chaowasku, Tanawat and Ke{\ss}ler, Paul J.A.} } @article {4942, title = {Seven new species of Miliusa (Annonaceae) from Thailand}, journal = {Nordic Journal of BotanyNordic Journal of Botany}, year = {2013}, pages = {no-no}, publisher = {Blackwell Publishing Ltd}, abstract = {Seven new species of the genus Miliusa are described from Thailand (M. fragrans, M. hirsuta, M. intermedia, M. nakhonsiana, M. sessilis, M. thailandica, and M. umpangensis). A key to the 19 species of Miliusa in Thailand is provided. In addition, the complete taxonomic nomenclature of all known species of Miliusa in Thailand is given, with several new proposed synonyms. The new as well as the known species of Miliusa in Thailand are classified into four morphological groups on the basis of a combination of flower and/or inflorescence position and inner petal morphology proposed earlier.}, isbn = {1756-1051}, author = {Chaowasku, Tanawat and Ke{\ss}Ler, Paul J. A.} } @article {4943, title = {Miliusa cambodgensis sp. nov. (Annonaceae) from Cambodia and M. astiana, M. ninhbinhensis spp. nov. from Vietnam}, journal = {Nordic Journal of BotanyNordic Journal of Botany}, year = {2014}, publisher = {Blackwell Publishing Ltd}, abstract = {The genus Miliusa in Cambodia and Vietnam is reviewed. Cambodia and Vietnam each harbors six species of Miliusa, including three which are described as new to science: one from Cambodia (Miliusa cambodgensis sp. nov.), the other two from Vietnam (M. astiana and M. ninhbinhensis spp. nov.). In addition, a complete nomenclature and relevant information about the Miliusa species previously known from Cambodia and Vietnam are provided, including keys to the Cambodian and Vietnamese species, the designation of a lectotype for M. baillonii and the synonymization of M. balansae var. elongatoides, M. chunii and M. sinensis with M. balansae.}, isbn = {1756-1051}, author = {Chaowasku, Tanawat and Ke{\ss}Ler, Paul J. A.} } @article {4947, title = {Integrative systematics supports the establishment of Winitia, a new genus of Annonaceae (Malmeoideae, Miliuseae) allied to Stelechocarpus and Sageraea}, journal = {Systematics and BiodiversitySystematics and Biodiversity}, volume = {11}, number = {2}, year = {2013}, month = {2013/06/01}, pages = {195-207}, publisher = {Taylor \& Francis}, abstract = {The generic circumscriptions of Stelechocarpus and Sageraea (Annonaceae) are assessed using molecular phylogenetic, macromorphological, and pollen morphological evidence. For molecular phylogenetic analysis the combined seven plastid markers: rbcL exon, trnL intron, trnL-F spacer, matK exon, ndhF exon, psbA-trnH spacer, and ycf1 exon constituting c. 7~kb are used. The results corroborate the recognition of a maximally supported clade as a new genus, Winitia. It is weakly to moderately supported as sister to Stelechocarpus burahol, the type and only species of Stelechocarpus. A clade consisting of Winitia and Stelechocarpus is strongly supported as sister to Sageraea, which is monophyletic with strong support. Winitia consists of two species, one of which (W. expansa) is proposed as a new species endemic to Thailand, whereas one new combination (W. cauliflora) is made. The new genus is primarily characterized by (1) multicolumellar stigmas (>= 5 columns per stigma) and (2) pollen grains with a very thin tectum, a more or less columellate/coarsely granular infratectum, and a very distinct basal layer. The macromorphology and pollen morphology of the three genera (Stelechocarpus, Winitia, and Sageraea) are highlighted.}, isbn = {1477-2000}, author = {Chaowasku, Tanawat and Van der Ham, Raymond W. J. M.} } @article {691, title = {Characterization of Hubera (Annonaceae), a new genus segregated from Polyalthia and allied to Miliusa}, journal = {Phytotaxa}, volume = {69}, year = {2012}, chapter = {33-56}, keywords = {Malmeoideae, molecular systematics, Old World floristics, Paleotropics, palynology}, url = {http://www.mapress.com/phytotaxa/content/2012/f/pt00069p056.pdf}, author = {Chaowasku, Tanawat and Johnson, David M. and Van der Ham, R. W. J. M. and Chatrou, Lars W.} }