Hoang Binh

University of Dalat · Department of Biology

ARTICLE INFO ABSTRACT Received: 11/12/2023 The genus Quercus L. is the largest within the Fagaceae family, comprising over 500 species that are widely distributed across Europe, North America, the Mediterranean, temperate deciduous forests in East Asia, and tropical montane forests in Southeast Asia. This study aimed to investigate the phytochemica...

Trong nghiên cứu này, thành phần hóa học của tinh dầu chiết xuất từ lá loài Gaultheria sleumeri Smitinand & P.H.(Benth.) ở Việt Nam đã được phân tích và đánh giá hoạt tính sinh học của chúng. Tinh dầu lá loài G. sleumeri thu được thông qua quá trình chưng cất lôi cuốn hơi nước, sau đó phân tích thành phần bằng phương pháp sắc ký khí khối phổ (GC-MS...

Nghiên cứu này nhằm đánh giá thành phần hoá học cũng như hoạt tính kháng vi sinh vật của tinh dầu loài dầu giun (Dysphania ambroisioides (L.) Mosyakin & Clemants) phân bố tại tỉnh Lâm Đồng. Phương pháp lôi cuốn hơi nước đã được sử dụng để tách chiết tinh dầu và phương pháp sắc ký khí - ghép khối phổ (GC-MS) để phân tích thành phần hoá học của tinh...

The oak trees of the genus Quercus have been a subject of study for centuries, and this book provides a comprehensive guide to the species of Quercus found in Vietnam. With its rich biodiversity and unique cultural heritage, Vietnam is home to many species of oak trees that are of great ecological and cultural significance. In this book, we introdu...

The premise of the study Though phenological studies in montane forests are important, particularly in tropical Asia where primitive angiosperms are found, the phenology in these forests is still poorly understood. To characterize the phenological patterns and reveal the relationships between meteorological factors and phenology, we observed the le...

DNA barcoding is a tool for species discrimination and identification which helps overcome the problem of identification that cannot be covered by morphological identification. Quercus is the second biggest genus of Fagaceae in Vietnam as well as Lam Dong province after Lithocarpus. However, the species discrimination study of the Quercus species i...

Quercus mangdenensis Binh & Ngoc, sp. nov. (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 c...

Lithocarpus pacoensis Ngoc & Son from Hoa Binh province, Northern Vietnam, was described and illustrated. The new species is similar to Lithocarpus komtumensis A. Camus and Lithocarpus laoticus (Hickel & A. Camus) A.Camus in having long petioles; big cupules, usually clustered in sets of three, flat apical, nearly completely enclosing the nut; nut...

In the present study, viscozyme L pre-treatment for aerial parts of Rosmarinus officinalis L. (rosemary), grown in Lam Dong province, was performed to evaluate the effective extraction of essential oils by hydro-distillation. Enzymatic pre-treatment with 1 g viscozyme L enzyme mixed with 5 mL sodium chloride 15% at 50 o C for 1 hour, followed by hy...

This study aimed to assess the chemical composition of essential oils of Elsholtzia blanda (Benth.) Benth. in Lam Dong Province, Viet Nam, and evaluate their biological activities. Essential oils obtained by hydro-distillation of the aerial parts of E. blanda were analyzed by gas chromatography-mass spectrometry (GC-MS). Thirty-one constituents wer...

A newly recorded Lithocarpus (Fagaceae) species for the flora of Vietnam, namely Lithocarpus encleisocarpus (Korth.) A.Camus was reported in this study. This species is most morphologically similar to L. dahuoaiensis Ngoc & L.V. Dung in having a completely entire leaf margin, solitary cupule, long stalks of fruits, deeply cup-shaped or turbinate cu...

Lithocarpus cadamensis Ngoc & Son, a new species of Fagaceae, is described and illustrated from Mt. Ca Dam, Tra Bong District, Quang Ngai Province, central Vietnam. The new species is characterized by its large leaf blades with long petioles, solitary and subsessile cupules which almost completely cover the nut, and spiny cupule scales, in a combin...

A new species, Quercus sontraensis 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 Q. sontraensis and its relatives (including Q. langbianensis and Q. cambodiensis) using Multiplex ISSR genotyping by sequencing (MIG-seq). The mor...

Beilschmiedia bidoupensis (Lauraceae) is described from Bidoup-Nui Ba National Park in the southern highland of Vietnam. The new species is characterized by lanceolate terminal buds that are ca. 2.5 mm long without coriaceous scales and covered with whitish brown hairs, glabrous twigs, predominantly alternate leaves evenly arranged on branches, ell...

Three new species, Lithocarpus bidoupensis Ngoc & Tagane, L. congtroiensis Ngoc & Yahara, and L. hongiaoensis 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...

A new species of Quercus (Fagaceae), Q. ngochoaensis, from Ba Vi National Park, Ha Noi, northern Vietnam is described and illustrated. This species is morphologically similar to Q. glauca in having glabrous twigs, cuneate leaf base, two or three fruits per infructescence, almost entire margin of lamellate rings on cupule except the lowest three rin...

We are delighted to publish this book, “A Picture Guide for the Flora of Bidoup-Nui Ba National Park I: Mt. Langbian”. To enrich our knowledge of the fora of Bidoup-Nui Ba National Park, seven botanical surveys were conducted in the protected area in 2012–2018. Among these surveys, this book focusing on the fora of Mt. Langbian was resulted fro...

The most comprehensive phylogenetic tree showing relationships among the large tropical genus Ardisia and related genera of subfamily Myrsinoideae (Primulaceae), based on nucleotide sequences of the nuclear ribosomal internal transcribed spacer (nrITS) region from 177 samples predominantly from the Neotropics, East Asia, Indo-China and Malesia is p...

A new species of Claoxylon (Euphorbiaceae), C. langbiangense, from Bidoup-Nui Ba National Park, Lam Dong Province, southern Vietnam, is described and illustrated. It resembles C. longifolium of Cam- bodia, NE India, Indonesia, Laos, Malaysia, Papua New Guinea, Thailand and Vietnam, but is distin- guished by its serrate-dentate leaf margin, larger s...

Fifteen new species of angiosperms, Ilex bidoupensis, I. hongiaoensis (Aquifoliaceae), Mastixia hongiaoensis (Cornaceae), Daphniphyllum hongiaoense (Daphniphyllaceae), Platea hongiaoensis (Icacinaceae), Neolitsea bidoupensis, N. hongiaoensis (Lauraceae), Nyssa bidoupensis, N. hongiaoensis (Nyssaceae), Eriobotrya hongiaoensis, Prunus hongiaoensis (R...

In the present study, chemical composition and antibacterial properties of essential oil obtained from the aerial parts of the Melicope pteleifolia (Champ. ex Benth.) T.G Hartley in Dalat were evaluated. Essential oil was isolated through hydro-distillation. Twenty-nine constituents comprising 100% of the essential oil were characterized by gas chr...

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 underst...

Phenology of tropical montane forests has been less well studied than tropical lowland forests. To bridge this gap, five plots were installed along the elevation from 1460 m to 1920 m in Bidoup-Nui Ba National Park in southern Vietnam, where monthly average temperature fluctuated from 14.7 ºC to 18.0 ºC with the difference of only 3.3 ºC, and month...

In the present study, the chemical composition and the antibacterial properties of the essential oil obtained from fresh leaves of Blumea balsamifera (L.) DC. in Lamdong are reported. The hydrodistillation method was used to isolate essential oil from leaves of this species, and gas chromatography/mass spectrometry (GC-MS) techniques were used to a...

We are delighted to publish this book, “A Picture Guide for the Flora of Bidoup-Nui Ba National Park I: Mt. Langbian”. To enrich our knowledge of the ora of Bidoup-Nui Ba National Park, seven botanical surveys were conducted in the protected area in 2012–2018. Among these surveys, this book focusing on the ora of Mt. Langbian was resulted from our...

Two novel species of 􏰀eolitsea (Lauraceae), 􏰀eolitsea 􏰑􏰇aduen􏰋ensis Tagane & Yahara and 􏰀. 􏰉u􏰪uan- 􏰋ensis Mitsuyuki & Yahara, are described and illustrated. 􏰀eolitsea 􏰑􏰇aduen􏰋ensis occurs in Phu Kra- dueng National Park, Loei Province, Northeast Thailand. 􏰀eolitsea 􏰉u􏰪uan􏰋ensis is in Vu 􏰫uang Na- tional Park, Ha Tinh Province, North Central Vietnam...

Erythroxylum calyptratum, sp. nov. (Erythroxylaceae), from Mt. Fansipan, Hoang Lien National Park, Lao Cai Province, northern Vietnam, is newly described. The new species is characterized by thinly chartaceous leaves with 2–3 mm long petiole, 1–3 flowered inflorescences, downward facing white flowers, well-developed petal appendages (1/3–1/2 length...

A new species, Quercus trungkhanhensis Binh & Ngoc (Fagaceae), from Cao Vit Gibbon Conservation Area, northeastern Vietnam is described. It is morphologically similar to Q. engleriana Seemen and Q. marlipoensis Hu & Cheng in having scaly cupules and in the shape, texture and glabrescence of the leaves, but distinguished from the former particularly...

The taxonomy of Quercus langbianensis 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 rbcL, matK and ITS regions and Neighbour-jo...

Lithocarpus vuquangensis Ngoc & Hung is described from Vu Quang National Park, North Central Vietnam. The morphological comparison and phylogenetic analysis based onrbcL,matKand 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, pr...

A new species, Quercus xuanlienensis Binh, Ngoc & Bon, is described from Xuan Lien Nature Reserve, Vietnam. The new species is morphologically similar to Q. edithiae 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 a...

Macrosolenbidoupensis Tagane & V.S.Dang, sp. nov. (Loranthaceae) is newly described from Bidoup Nui Ba National Park in Lam Dong Province, southern Vietnam. The new species is characterized by small broadly elliptic to circular leaves, sessile to short petioles, slightly cordate to rounded leaf bases, 4–5 pairs of lateral veins and a basally green...

Lithocarpus dahuoaiensis Ngoc & L. V. Dung, a new species from the Central highland of Vietnam, is described and illustrated. The new species is morphologically similar to Lithocarpus macphailii (M. R. Hend.) Barnett or Lithocarpus encleisocarpus (Korth.) A. Camus in having completely entire leaf margin, solitary cupule, long stalks of fruits, deep...

A new species, Popowia bachmaensis Ngoc, Tagane & Yahara, sp. nov. is described from Bach Ma National Park in ua ien Hue Province, Central Vietnam. is species is morphologically similar to Popowia pisocarpa (Blume) Endl. ex Walp., but can be readily distinguished from it by its lower stems, smaller leaves, shorter owering pedicels, shorter carpels,...