Son Dang

Son Dang
Institute of Tropical Biology · The VNM Herbarium

About

158
Publications
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Introduction
Son Dang currently works at the Curator of the VNM Herbarium, Institute of Tropical Biology, Vietnam. Son does research in Botany. Their current project is 'Medicinal plants and Rubiaceae'.

Publications

Publications (158)
Article
Two undescribed furanoxanthones, cratocochinones A (1) and B (2), along with eight known xanthones (3–10), were isolated from the bark of Cratoxylum cochinchinense. Their structures were elucidated using spectroscopic methods, mainly 1D and ²D NMR. The isolated compounds were investigated for α-glucosidase inhibitory activity. Seven compounds, 3-6...
Article
Bulbophyllum phanquyetii, from Lai Chau Province was found and described as a new species for science. The new species looks similar to B. guttulatum and B. umbellatum but differs in the connate upper margin of lateral sepals, verruculose sepals and petals, and triangular stelidia. In addition, B. tianguii found in Ha Giang Province is firstly reco...
Article
The taxonomic treatment of the genus Campanulorchis is herein presented. Short description, data on habitat, phenology, distribution, illustrations and identification key for all species are included. Campanulorchis globifera was firstly recorded for the orchid flora of Cambodia and C. thao firstly recorded in Laos.
Article
Full-text available
Based on the specimens from 2021-2022, a study on the diversity and distribution of Rubiaceae in Con Dao National Park in Ba Ria - Vung Tau province was defined and identified 73 species and 33 genera. Among them, 6 species have been added to Con Dao National Park, including Benkara depauperata, Benkara hoaensis, Benkara scandens, Psychotria serpen...
Article
A yellow-flowered Chiloschista (Orchidaceae, Aeridinae) with brown-spotted tepals is described as a new species. It was initially collected in Son La Province, Thuan Chau District, and later flowered in cultivation when it was identified as a new specie. This new species resembles C. parishii and C. himalaica in habit, shape and color of the flower...
Article
An updated checklist of the family Burmanniaceae in Cambodia, Laos and Vietnam is provided. The checklist comprises a single genus, Burmannia, and 15 species, of which one is fully autotrophic, six species are partially mycoheterotrophic, and eight species are fully mycoheterotrophic (non-photosynthetic). Burmannia itoana earlier known only from Ja...
Article
Kaempferia marginata rhizomes are used as an herb in food and as traditional medicine for the treatment of inflammatory-related diseases in Asian countries. In contrast to the previously reported phytochemical investigation of Thai and Chinese K. marginata rhizomes, which demonstrated the presence of sandaracopimaradiene and ent-sandaracopimaradien...
Article
A species, new to science, is described from Son La province, Vietnam. The new species is similar to B. yongtaiense, B. layae and B. sridithii in the hairy lip at base but clearly differs by the papillose margin and inner surface of dorsal sepal and petals, lip without mid keel and dense hairs on lateral keels, stelidia 2 times longer than 3 simila...
Article
Lasianthus kbangensis V.S.Dang, Vuong & Naiki, a new species belonging to Lasianthus sect. Nudiflorae of Rubiaceae from the Central Highlands of Vietnam, is described and illustrated. This new species is similar to L. oblongilobus H. Zhu, but differs in having larger leaves, longer petioles, smaller calyx (calyx lobes) and corolla, and the color of...
Article
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Acanthophippium sylhetense Lindl. (Orchidaceae) is reported as a new record for the Vietnamese flora.Taxonomic notes and a key to the species of Acanthophippium in Vietnam are also provided.
Article
Two new species of shrubs in the genus Lasianthus Jack (Rubiaceae), L. naikii V.S.Dang & Vuong sp. nov. and L. sonlangensis V.S.Dang, Vuong & Quan sp. nov. from Kon Chu Rang Nature Reserve of Gia Lai Province in southern Vietnam, are described and illustrated. The similarities and differences of two new species with the morphologically closest alli...
Article
The taxonomic identity of Garcinia bonii Pit. (Clusiaceae) in Vietnam was re-evaluated based on the original description and type materials and reclassified in sect. Oxycarpus, not in sect. Hebradendron (previous treatment). Garcinia bokorensis H. Toyama & Yahara of Cambodia is proposed as a new synonym of G. bonii based on a morphological comparis...
Article
Two new cycloartanes, combretic acid C (1) and combretanone I (3), were isolated from the leaves of Combretum quadrangulare Kurz, together with the previously-reported combretic acids A-B (2 and 5) and combretanone A (4). An extensive set of spectroscopic methods were used to elucidate the structures of these compounds. Cytotoxicity against the K56...
Article
The genus Mussaenda belongs to the family Rubiaceae with about 160 species. These species are widespread in tropical and subtropical zones. In Vietnam, the genus contains 27 species. Several plants of this genus were used in the folk medicine for the treatment of different diseases. Mussaenda plants are a rich source of saponins, terpenoids, iridoi...
Article
Full-text available
Bulbophyllum mamillatum Vuong, Aver., V.S.Dang is described as a new species for science and B. retusum H. Jiang, D.P. Ye & J.D. Ya is reported as a new national record for the orchid flora of Vietnam. Both species belong to Bulbophyllum sect. Brachyantha Rchb.f. and were discovered in northern Vietnam. Description of new the species is presented....
Article
A new glycoside, recurvataside (1) and six known compounds, quinovic acid (2), quinovic acid 28-O-β-D-glucopyranosyl ester (3), 3-O-β-D-glucopyranosylquinovic acid (4), 3-O-β-D-glucopyranosylquinovic acid 28-O-β-D-glucopyranosyl ester (5), pomolic acid (6), and ursolic acid (7) were isolated from aerial parts of Mussaenda recurvata. The structure o...
Article
Four compounds, luteolin ( 1 ), 6˗ γ , γ ˗Dimethylallylquercetin 7˗ O ˗ β ˗ᴅ˗glucopyranoside ( 2 ), 6˗ γ , γ ˗Dimethylallylkaempferol 7˗ O ˗ β ˗ᴅ˗gluco‐pyranoside ( 3 ), and 6˗ γ , γ ˗Dimethylallyldihydrokaempferol 7˗ O ˗ β ˗ᴅ˗glucoside ( 4 ), were isolated for the first time from EtOAc extract of the O. integerrima flower. We then evaluated the an...
Article
Full-text available
Hapaline kimthoae K.Z.Hein, Vuong & V.C.Nguyen from Da Nang province, Vietnam, is described and illustrated as a species new to science. Description, colour plates, discussion of similar taxa, phenology, distribution and a preliminary conservation status assessment are provided. With this discovery, Vietnam now holds a total of five Hapaline specie...
Article
The paper presents a taxonomic review of Bulbophyllum section Rhytionanthos for the flora of Vietnam and provides the key for its species' identification. A new species, B. truongtamii and a new variety, B. taeniophyllum var. denticulatoalatum are described for science. Bulbophyllum nodosum is reported for the first time from the country. Bulbophyl...
Article
Nghiên cứu nhằm đánh giá mối quan hệ di truyền của heo rừng tỉnh Đắk Nông dựa trên trình tự gene cytochrome b. Kết quả sắp xếp trình tự cho thấy tồn tại 26 điểm đa hình đơn nucleotide (SNP) giữa các haplotype ở heo rừng Đắk Nông với các haplotype khác từ châu Á và châu Âu. Vùng biến đổi mạnh xuất hiện từ vị trí 15029 đến 15045. Haplotype DKN3 và nh...
Article
A new species, Chamaeanthus averyanovii is described from Vietnam. It resembles C. brachystachys in many features but can be differentiated on the basis of leaves and morphological details of flower. The manuscript presents description, illustrated color plate and data on its phenology, ecology, and distribution. Morphological resemblance of the ne...
Article
Full-text available
Mycaranthes latifolia Blume, distributed from Peninsular Malaysia, Borneo, Sumatra to Java is now reported for the first time in Vietnam. A morphological description, colour plate and line drawings, information on habitat and phenology are provided. An identification key to the species of Mycaranthes in Vietnam is also provided.
Article
Bulbophyllum xuansonii belonging to section Brachystachyae, discovered in Ninh Binh and Son La provinces is described here as a new species for science. This species is similar to B. xylophyllum and B. gracilipes but can be easily distinguished by the smaller habit and shape of tepals and stelidia. Additionally, B. gracilipes found in Lam Dong Prov...
Article
The new species, Bulbophyllum manhdatii (B. sect. Brachyantha) discovered in Da Lat Plateau, Lam Dong Province (southern Vietnam) is described here. This new species is close to B. pumilio but clearly differs in densely crowded pseudobulbs and their shape, shorter inflorescence, lateral sepals forming a narrow acute tube slightly flattened at the b...
Article
A new species from the Central Highlands of Vietnam, Bulbophyllum vulinhae, referrable to Bulbophyllum sect. Racemosae (Orchidaceae) is described and illustrated. In addition, B. allenkerrii from the same section is reported from Vietnam for the first time. Morphological description, illustrations, data on ecology and phenology for both species are...
Article
From the Lasianthus bidoupensis stems, two new compounds, including one new 9,10-anthraquinone, lasibidoupin A (1), and one new 6,7-benzocoumarin, lasibidoupin B (2), together with one known compound, 11-O-methyldamnacanthol (3) were isolated using chromatographic method. Their structures were determined by extensive HRMS, and NMR assignments. Comp...
Article
A study to assess the diversity of medicinal plant resources in Kon Ka Kinh National Park in Gia Lai province was carried out. A total of 486 species of medicinal plants belonging to 348 genera, 112 families of five phyla of vascular plants were identified. There are 10 families with the most species (182 species) accounting for 37.4% of the total...
Article
From the whole plants of Macrosolen bidoupensis Tangane & V.S.Dang, five triterpenoids, 24-methylenecycloartanol (1), (23Z)-cycloart-23-en-3β,25-diol (2), mollic acid (3), ursolic acid (4), 3β-hydroxyurs-11-en-28,13-olide (5), together with two compounds, one C11-norisoprenoid, loliolide (6), and one lignan, syringaresinol (7) were determined by us...
Article
One new cycloartane-type triterpenoid, named macrobidoupoic acid A (as an C-24 epimeric mixture, 4a, 4b), together with three known ones (1-3), were clarified by different chromatography from the M. bidoupensis whole plants. Triterpenoids (1, 3 & 4) were detected for the first time from the Macrosolen genus. Chemical structures of them were illumin...
Article
Recent fieldwork in Ha Giang province, Northern Vietnam resulted in the collection of Pholidota longipes, a species only known in South‐Central China. Thus, we herein report the first record of the species for the Orchid Flora of Vietnam. Morphological description and illustrations based on living collected materials, data on phenology, geographica...
Article
Nghiên cứu đa dạng họ Lan (Orchidaceae) ở Nam Bộ được thực hiện trong hai năm 2018 và 2019 nhằm mục tiêu đánh giá được thực trạng đa dạng thành phần loài lan ở vùng này. Các phương pháp được sử dụng bao gồm: phương pháp điều tra thực địa và thu mẫu, phương pháp so sánh hình thái kết hợp với tra cứu các tài liệu chuyên ngành về họ Lan. Kết quả nghiê...
Article
Full-text available
Background: Garcinia is a large genus which has promising bioactivities. However, the properties of many Garcinia species have not been investigated thoroughly. Aim: To determine the antioxidant and antimicrobial capabilities of the extracts from different Garcinia species. Methodology. Six Garcinia species, including Garcinia fusca, Garcinia ho...
Article
Full-text available
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...
Article
Aspidistra peltata, a new species morphologically allied to A. tonkinensis (= A. fungilliformis subsp. formosa; A. formosa) discovered in northern Vietnam, is described and illustrated. From the closely related A. tonkinensis, the new species differs in having an erect stem 4–14 cm tall, much smaller leaves, smaller flowers, filamentose stamens, a...
Article
The new species discovered in Thanh Hoa Province of northern Vietnam described here as a new species for science. It is similar to B. muscicola but differs in smaller habit, inflorescence shorter than leaves, shorter lateral sepals with unequally lobed blunt apex, and slender stelidia. The newly described species also can be compared with B. japoni...
Article
Full-text available
A new variety, Bulbophyllum blaoense var. flavescences (B. sect. Cirrhopetaloides) discovered in southern Vietnam is described here. In addition, two species, B. caudatum and B. kwangtungense (B. sect. Desmosanthes) found in the northern part of the country are firstly recorded and documented for the flora of Vietnam. Morphological description and...
Article
Full-text available
Extensive fractionation of n-hexane extract from the dried powdered-trunks of Coffea canephora Pierre ex A.Froehner (Rubiaceae) led to the isolation of a new oleanane-skeleton triterpene, coffecanolic acid (1), along with three known analogues sumaresinolic acid (2), oleanolic acid (3), and 3-O-acetyloleanolic acid (4). The chemical structures were...
Article
The new species, Gastrochilus dresslerii (G. sect. Microphyllae) discovered in northern Vietnam (Ha Giang Province) is described and illustrated, and data on its phenology, ecology, and distribution is provided. Morphological resemblance of discovered plant with allied species are also discussed.
Article
Full-text available
Bioactive-guided phytochemical investigation of Euphorbia antiquorum L. growing in Vietnam led to the isolation of five ent-atisanes, one seco-ent-atisane, and one lathyrane (ingol-type). The structures were elucidated as ent-1α,3α,16β,17-tetrahydroxyatisane (1), ethyl ent-3,4-seco-4,16β,17-trihydroxyatisane-3-carboxylate (2), ent-atisane-3-oxo-16β...
Article
Five flavonoids, including quercetin (1) and four its derivatives, quercitrin (2), isoquercitrin (3), astibin (4), and rutin (5), together with two phenolic glycosides, 3,3′‐di‐O‐methylellagic acid 4‐O‐β‐D‐xylopyranoside (6), and aesculin (7) were isolated from the whole plants of Macrosolen bidoupensis Tangane & V.S. Dang. Their chemical structure...
Article
Five coumpounds including 5,7-dimethoxyflavone (1), 3,5,7-trimethoxyflavone (2), di-O-methylpinocembrin (3), bisdemethoxycurcumin (4), aloe-emodin (5) were isolated from the n hexane extract of Kaempferia parviflora rhizomes. Their structures were elucidated by ESI-MS, 1D & 2D-NMR spectra and compared their spectra with published data. Among them,...
Article
Two new rocaglamides, 8b-O-5-oxohexylrocaglaol (1) and elaeagnin (2), together with twelve known compounds, were isolated from the bark of Aglaia elaeagnoidea and the whole tree of A. odorata. Their structures were determined using spectroscopic methods, mainly 1D and 2D NMR. Cytotoxic activity against HepG2 human liver cancer cells of the isolated...
Article
As the most significant pollinators of wild plants, bees play an important role in sustaining the natural ecosystems. In this study, we conducted surveys of bee fauna of three different habitat types during dry and rainy seasons of 2020 in Binh Chanh District, Ho Chi Minh City. A total of 169 individuals from 13 bee species belonging to six genera...
Article
For the first time, the cytotoxic and phytochemical investigations of the whole plants of Macrosolen bidoupensis Tangane & V.S. Dang, a new species discovered in Viet Nam were conducted and led to the purification of ten compounds, comprising three lupane-type (1-3), three friedelane-type (4-6), and one glutinane-type (7) triterpenoids and three ch...
Article
Full-text available
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...
Article
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Helicteres binhthuanensis V.S.Dang, sp. nov. from Ham Thuan Bac District, Binh Thuan Province, Vi-etnam is described and illustrated. It is morphologically similar to H. angustifolia, which is a common species in mainland southeast Asia, and H. sphaerotheca, which is endemic to the Northern Territory, Australia, but differs from both by several sal...
Article
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A new epiphytic species Vaccinium chlaenophyllum Vuong, V.H.Bui & V.S.Dang is described from Lam Dong Province in the Central Highlands of Vietnam. Vaccinium chlaenophyllum is similar to V. pseudospadiceum but differs from it by having an epiphyte habit, smaller leaves, shorter calyx lobes and corolla, and a glabrous filament. A morphological descr...
Article
Full-text available
Bulbophyllum sridithii a new species to science is described and illustrated from Kon Ka Kinh National Park of Vietnam. The new species belongs to the section Cirrhopetaloides and resembles B. layae, B. hirundinis, B. electrinum, B. pecten-veneris and B. tingabarinum but differs in the size and shape of pseudobulbs, the shape of the leaf blade, and...
Article
Bulbophyllum trongquyetii is described as new for science from Vietnam. Detailed morphological description, illustration, data on distribution, and phenology are provided. Described species resembles B. nipondhii but differs in the bigger size of plant, longer inflorescence, and uniform yellow or reddish-orange flowers. It can be also compared with...
Conference Paper
Full-text available
A study of medicinal plant resource of Cham minority from Bac Binh District in Binh Thuan Province resulted in the identification of 132 species, 119 genera, 53 families of three phyla of vascular plants (Polypodiophyta, Pinophyta and Magnoliophyta). Of those, six species were listed in the Vietnamese Red Data Book (2007) and the Decision No 06/201...
Article
The littoral macroinvertebrates communities in Dankia lake in Lam Dong Province were surveyed at five sampling sites in five years from 2013 to 2017. A total of 23 taxa belonging to 15 familes, nine orders, three phyla were identified. The arthropoda phylum had the highest diversity (18 species) followed by mollusca phylum (4 species) and the lowes...
Article
Full-text available
Vanilla tiendatii, discovered in limestone mountain area of Quang Binh Province in Northern Vietnam, is described as a species new for science. Morphologically this species appears to be closely related to V. yesiniana and V. albida, but well differs in the leaf shape, flower color, lip densely papillate-hairy at apex, and column fimbriate-hairy in...
Article
Introduction: Ricinus communis Linn. (Castor oil plant) is a monotypic species of Ricinus genus (Euphorbiaceae) and widely distributed in all tropical countries. Phytochemical data of this plant are scarce. As part of ongoing research on a survey of Vietnamese medicinal plants, the investigation of this plant was performed. The isolation and struct...
Article
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The phylogenetic relationships among the species of Leptopetalum (Rubiaceae) were updated by collecting new samples throughout their distributional range. The obtained phylogenetic tree indicated that four shrubby species were monophyletic but nested among herbaceous species. In the herbaceous species, several clades were detected. Neither of two s...
Article
Sunipia quangdangii (Orchidaceae) discovered in southern Vietnam (Lam Dong Province, Da Lat City area) is described and illustrated as a new species for science. It is most close to S. pallida but differs in smooth petals, saccate hypochile with erose margin, small triangular side lobes and terete epichile. The new species is also similar to S. and...
Article
A new species, Lasianthus konchurangensis V.S.Dang, T.B.Tran & T.D.Ha (sect. Lasianthus), is described and illustrated from Kon Chu Rang Nature Reserve, Gia Lai Province, the Central Highlands of Vietnam. Lasianthus konchurangensis resembles L. foetidissimus but differs in having larger leaves, more secondary veins, larger calyx and purple corolla....
Article
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A new species of Helicteres (Malvaceae), H. daknongensis V.S.Dang & D.T.Bui from Gia Nghia district, Dak Nong province, southern Vietnam, is described and illustrated. This species is morphologically similar to H. viscida Blume and H. hirsuta Lour. but differs by having smaller petals and fruits, and different petal colour. A morphological descript...
Article
Full-text available
A new species of Rubiaceae, Psydrax gialaiensis B.H.Quang, T.B.Tran & V.S.Dang, sp. nov. , is described and illustrated from the Kon Chu Rang Nature Reserve, Gia Lai Province, southern Vietnam. This species is characterized by having strigose branches and leaves, a conspicuously bulging, short corolla tube, an accrescent nectary disc and a style wi...
Article
From the Vietnamese plant Macrosolen tricolor (Lecomte) Danser, one new diarylpropanoid, named macrotricolorin A (1) together with three diarylheptanoids including bisdemethoxycurcumin (2), demethoxycurcumin (3) and curcumin (4), were isolated. Their structures were elucidated by intensive analyses of their IR, UV, HR-ESI-MS and NMR (1 D & 2 D) spe...
Article
Full-text available
Brachyuran crabs are crustacean groups with high species diversity, widely distribute and play an important ecological role in the mangrove forest area. In this study, samples of the brachyuran crabs were collected at 12 sampling sites in the mangrove forest and mudflat habitat in the mangrove forest area in Cu Lao Dung district, Soc Trang province...
Article
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Bulbophyllum leysianum (sect. Hyalosema) and B. ovalifolium (sect. Macrocaulia) are recorded as new for the flora of Vietnam. Both species originate from the Hon Ba Nature Reserve (Khanh Hoa Province, Vietnam). The first was found as an epiphyte on fallen branch in riparian lowland forest, while the second was recorded on small branches in a canopy...
Article
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Diversity and taxonomy of the mycoheterotrophic genus Lecanorchis (Orchidaceae) in Vietnam is reappraised. Four species are confirmed, including two new records, L. moritae Suetsugu & T.C. Hsu and L. taiwaniana S.S. Ying. In addition, the occurrence of L. nigricans Honda in Vietnam is supported by image records, but further confirmation is still ne...
Article
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Two new species of Lasianthus (Rubiaceae), L. thuyanae V.S.Dang & Naiki from Ba Vi National Park, Ha Noi City, northern Vietnam, and L. tamdaoensis V.S.Dang from Tam Dao National Park, Vinh Phuc Province, northern Vietnam, are described and illustrated. Lasianthus thuyanae is closely related to L. curtisii but differs from it by having larger stipu...
Article
Based on the specimens collected from Hon Ba Nature Reseve of Khanh Hoa Province during 2013 - 2018, the total of eighteen species of genus Lasianthus Jack were recorded. Among them, one new recorded species (L. membranaceoideus) and corolla and mature fruit morphology of one species (L. stephanocalycinus) were added for the flora of Vietnam. A det...
Article
Two new species, Lasianthus fansipanensis V.S. Dang & Naiki and Lasianthus sapaensis V.S. Dang & Naiki (sect. Nudiflorae), were discovered in the Hoang Lien National Park of northern Vietnam and are here described and illustrated. Colour photographs, preliminary conservation assessment, and tables comparing these two new species against two closely...
Article
Three friedelane-type triterpenoids including 3-oxofriedelane (1), 3α-hydroxyfriedelane (2), 3β-hydroxyfriedelane-28-oic acid (3) and one glutinane-type triterpenoid, 3β-hydroxyglutin-5-ene (4) were purified from the whole plants of Macrosolen bidoupensis Tagane & V.S.Dang. For the first time, the friedelane-type and glutinane-type triterpenoid cla...
Article
Three diarylheptanoids comprising bisdemethoxycurcumin (1), demethoxycurcumin (2), curcumin (3) and one ellagic acid derivaties, 3,3’-di-O-methyl-4’-O-β-D-xylopyranosylellagic acid (4) were illuminated from the whole plants of Macrosolen tricolor (L.) Dans. Their structures were clarified by HR-ESI-MS, NMR and observation with published data. All c...
Article
A survey of the medicinal plant resources from Con Dao National Park in Ba Ria-Vung Tau Province during March 2018 to May 2019 was given. A total of 396 species of medicinal plants belonging to 300 genera, 118 families of six phyla of vascular plants (Lycopodiophyta, Polypodiophyta, Pinophyta, Cycadophyta, Gnetophyta and Magnoliophyta) were recorde...
Conference Paper
Two phenolics, gallic acid (1), 3,3’-dimethoxyellagic acid (2), two flavonoid C-glycosides, vitexin (3), orientin (4) and two steroid glycosides, 3-O-β-D-glucopyranosylstigmast-5-ene (5), 3-O-β-D-(6’-O-margaroyl)glucopyranosylstigmast-5-ene (6) were separated from the whole plants of Macrosolen tricolor. Their chemical structures were identified by...
Article
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Coelogyne longipes Lindl., a species of of the Orchidaceae, is newly recorded for Vietnam’s flora. This species has previously been found in Bhutan, Northeast India (Himalayas, Sikkim, Khasia Hills); Southwest China (SE Xizang, W to SE Yunnan) and in Laos, Myanmar and Thailand. This collected species from Vietnam are also redescribed and illustrate...
Article
Six flavonoids, including one flavan-3-ol epicatechin (1), one flavone glycoside apigenin 7-O-β-D-glucopyranoside (2), three flavones namely dimethylchrysin (3), trimethylapigenin (4) and luteolin (5) and one flavonol quercetin (6) were isolated from the hexane and chloroform extracts of the leaves of Sterculia foetida Linn. collected in Binh Thuan...
Article
A new species, Gynochthodes honbaensis (Rubiaceae), from Hon Ba Nature Researve, Khanh Hoa Province, southern Vietnam, is described, with a key to the species of Gynochthodes in Vietnam. This species is phenotypically most similar to G. macrophylla distributed in Nicobar Islands, Thailand, and Peninsular Malaysia, but differs in having smaller leav...