Chemical Composition, Anti-Microbial, and Cytotoxic Activities of Essential Oil From Magnolia bidoupensis Q. N. Vu Leaves, an Endemic Species to the Central Highlands of Vietnam.

An analysis was conducted on the essential oil extracted from the leaves of Magnolia bidoupensis utilizing GC-MS, revealing thirty-three constituents that account for 98.9 % of the essential oil. The main components included pogostol (22.

Chemical Composition, Anti-Microbial, and Cytotoxic Activities of Essential Oils from Blumea densiflora var. hookeri (C.B. Clarke ex Hook.f.) C.C. Chang & Y.Q. Tseng Leaves from Vietnam.

The essential oil from the leaves of Blumea densiflora var. hookeri was analyzed using GC-MS, and bioassays were performed. GC-MS identified thirty-four constituents, representing 79.

A new species of genus (Fagaceae) from Son Tra Peninsula, Central Vietnam.

A new species, Ngoc, Binh & Son is described from Son Tra Nature Reserve, Son Tra Peninsula, Central Vietnam. We examined the morphology and constructed a highly resolved phylogeny of and its relatives (including and ) using Multiplex ISSR genotyping by sequencing (MIG-seq). The morphological analyses and molecular evidence support the distinction between the new species () and its relatives.

, a new species of (Fagaceae) from Kon Tum Province, Vietnam.

Binh & Ngoc, (Fagaceae) is newly described from Mang Den Town in the central highland of Vietnam. The new species is characterized by lanceolate to oblong-lanceolate leaves with entire margin, 1-5-fruited infructescence, larger fruit size 6-10.5 cm long, broadly bowl-shaped cupules enclosing 1/5 of the nut, bracts of cupule entire and arranged in 5-7 rings, and cylindrical-ellipsoid and basally flat nuts 4.

Morphological and molecular evidence reveals three new species of (Fagaceae) from Bidoup-Nui Ba National Park, Vietnam.

Three new species, Ngoc & Tagane, Ngoc & Yahara, and Ngoc & Binh are described from Bidoup-Nui Ba National Park, Central Highland of Vietnam. Morphological analyses and Maximum likelihood tree based on genome-wide SNPs support the distinction of those species from the previously known taxa in the region. The three new species are considered to be endemic to the Bidoup-Nui Ba National Park and the preliminary conservation status for each species is evaluated as Critically Endangered.

Museomics for reconstructing historical floristic exchanges: Divergence of stone oaks across Wallacea.

Natural history collections and tropical tree diversity are both treasure troves of biological and evolutionary information, but their accessibility for scientific study is impeded by a number of properties. DNA in historical specimens is generally highly fragmented, complicating the recovery of high-grade genetic material. Furthermore, our understanding of hyperdiverse, wide-spread tree assemblages is obstructed by extensive species ranges, fragmented knowledge of tropical tree diversity and phenology, and a widespread lack of species-level diagnostic characters, prohibiting the collecting of readily identifiable specimens which can be used to build, revise or strengthen taxonomic frameworks.

A taxonomic study of complex based on morphology and DNA barcodes of classic and next generation sequences.

The taxonomy of and its relatives in Vietnam and Cambodia have been revised based on evidence obtained from field observations, morphological comparison of herbarium specimens and molecular analyses using both classic and next generation DNA markers. Based on Bayesian inference using L, K and ITS regions and Neighbour-joining tree using genome-wide sequences amplified with multiplexed inter-simple sequence repeat (ISSR) primers (MIG-seq), the authors recognised ten species in the complex in Vietnam and Cambodia, three of which are newly described in this paper: , and . These new species are all phenotypically similar to in having lanceolate to oblanceolate leaf shape, upper 4-5/6-serrated leaf margin, acute or acuminate leaf apex and bracts of cupule arranged in 5-9 rings but distinguished both morphologically and phylogenetically.

(Fagaceae), a new species from Vu Quang National Park, Vietnam.

Ngoc & Hung is described from Vu Quang National Park, North Central Vietnam. The morphological comparison and phylogenetic analysis based on , and ITS provided evidence that the new species was not assignable to any of the previously known taxa in Vietnam and its surrounding countries. The description, photographs, preliminary conservation status and DNA barcode sequences are also provided for the new species.

A new species and two new records of (Fagaceae) from northern Vietnam.

A new species, Binh, Ngoc & Bon, is described from Xuan Lien Nature Reserve, Vietnam. The new species is morphologically similar to Skan, in having 8-11 pairs of secondary veins, bowl-shaped cupules and ellipsoid to cylindrical-ellipsoid and basally convex nuts. It differs in having serrulate leaf margins only at apical 1/5-1/7, almost entire margins of bracts on cupule and much longer nuts.

(Loranthaceae), a new species from Bidoup Nui Ba National Park, southern Vietnam.

Tagane & V.S.Dang, (Loranthaceae) is newly described from Bidoup Nui Ba National Park in Lam Dong Province, southern Vietnam.

(Fagaceae), a new species from Lam Dong Province, Vietnam.

Ngoc & L. V. Dung, a new species from the Central highland of Vietnam, is described and illustrated.

Popowia bachmaensis (Annonaceae), a new species from Bach Ma National Park, Central Vietnam.

A new species, Popowia bachmaensis Ngoc, Tagane & Yahara, sp. nov. is described from Bach Ma National Park in Thua Thien Hue Province, Central Vietnam.

Homalium glandulosum (Salicaceae), a new species from Vu Quang National Park, North Central Vietnam.

Homalium glandulosum Tagane & V. H. Nguyen, from Vu Quang National Park in northern Vietnam, is newly described.