Khang Sinh Nguyen

Khang Sinh Nguyen
The Institute Of Ecology and Biological Resources · Department of Biology

About

181
Publications
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815
Citations
Citations since 2016
109 Research Items
764 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150

Publications

Publications (181)
Article
Ceriscoides glabra, a new species of the tribe Gardenieae (Rubiaceae), is described and illustrated. The species was discovered in 2017–2018 in Kon Chu Rang Nature Reserve (Gia Lai Province, southern Vietnam), in the vicinity of the locally well-known K50 waterfall, also known as Hang En waterfall. The new species differs from its congeners by the...
Article
Leptomischus multiflorus, a new species of the tribe Argostemmateae (Rubiaceae), is described and illustrated. The species was discovered in 2022 in Quang Nam Province, southern Vietnam. The new species is characterized by rich indumentum on almost all plant parts, distylous flowers, and minutely puberulent ovary disk. Leptomischus multiflorus diff...
Article
This paper presents new data on the orchid diversity of Vietnam obtained in 2020–2022. It comprises descriptions of two species new for science (Cleisostoma tatonii and Sarcoglyphis hiepii) and descriptions of four species new for the flora of Vietnam (Cleisostoma aspersum, Gastrochilus nanus, Micropera mannii and Trichoglottis ramosa). All species...
Article
Tupistra annamensis, a new species from central Vietnam is described and illustrated. In the habitats it occurs as an epiphyte or a lithophyte. Having a pendulous scape, this species is similar to such species as T. fungilliformis and T. clarkei, but differs distinctly from them and all other members of this genus by its outer and inner floral brac...
Article
Tupistra annamensis, a new species from central Vietnam is described and illustrated. In the habitats it occurs as an epiphyte or a lithophyte. Having a pendulous scape, this species is similar to such species as T. fungilliformis and T. clarkei, but differs distinctly from them and all other members of this genus by its outer and inner floral brac...
Preprint
Raphiocarpus taygiangensis , a new species of Gesneriaceae from Tay Giang District, Quang Nam Province, Central Vietnam, is here described and illustrated. The new species is diagnostic by the combination of its long stem, serrate leaf margin, purple spots, purple longitudinal lines, and glandular short hairs inside corolla. Morphological distincti...
Article
This paper presents new data on the orchid diversity of Vietnam obtained in 2015–2021. It contains descriptions of three new species (Cleisostoma furcatum, Malleola micrantha, Schoenorchis hungii), one new variety (Chiloschista parishii var. minutiflora) and one new form (Cleisostoma furcatum forma albiflora). Additionally six species, Ascocentrops...
Article
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Lysionotus hagiangensis, a new species from northern Vietnam, is described and illustrated. It morphologically resembles L. chatungii and L. petelotii, but differs markedly by the character of leaf, inflorescence, corolla color, the shape of stamens, and the number of well developed staminodes. We provide detailed information, including morphologic...
Article
Five new species of Urophyllum Wall. endemic to Cambodia and Vitnam are herein described and illustrated, and U. annamense (Pierre ex Pit.) Yooprasert, Culham & Utteridge, stat. nov. is raised to species status. The new species are unique due to the morphological combination of indumentum, secondary venation, stipule shape and inflorescence structu...
Article
Peliosanthes luteoviridis is described and illustrated as a new species from southern Vietnam (Dong Nai Province, Cat Tien National Park). It is most similar to P. macrostegia in having stamens forming a hemispheric corona and a pistil somewhat abruptly narrowing to a conoid style, but differs mainly in dense inflorescence, terete peduncle, entirel...
Article
We transfer Chirita crassifolia to Primulina as P. crassifolia and provide detailed amended descriptions for this species and for P. quanbaensis, both species found in the karst habitats in the Bat Dai Son mountains in Ha Giang province, northern Vietnam.
Article
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Previous studies recognized three major lineages of the family Costaceae: a South American clade, an Asian clade and a Costus clade. However, the genus Hellenia within the Asian clade has been shown to be non-monophyletic and its morphology has not been studied carefully. Therefore, the complete plastid genomes of Hellenia species were obtained and...
Article
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Alpinia is considered the largest genus of Zingiberaceae with ca. 250 species occurring in tropical and subtropical Asia, Australia, and Pacific Islands. The historical biogeography of Alpinia was conducted to explain where Alpinia originated and how it migrated to other regions. The phylogeny, divergence times and ancestral area reconstruction of...
Article
A new species of Aspidistra, A. sonlaensis, is described and illustrated from Son La Province in northern Vietnam. The new species is morphologically close to A. micrantha, but differs in number of perigone lobes, anther position and pistil shape. The new species is accessed as Data Deficient (DD) according to the IUCN categories and criteria.
Article
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This paper continues the publication of Aspidistra species newly discovered in the flora of Vietnam. It includes illustrated diagnosis of two species new to science, A. liliiflora and A. sessilistigma found in northern and central parts of the country. Detailed analytical color illustrations, data on morphology, ecology, phenology, tentative relati...
Article
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A new species of Rubiaceae, Spiradiclis detianensis is described from a limestone karst area of southwestern China. This new species is morphologically similar to S. cordata and S. spathulata . All of them have rosetted habit and long peduncles, but it differs from the former by the cuneate leaf bases (vs. basally cordate) and much longer corolla t...
Article
Two new species of Ophiopogon, O. dolichocaulis from Son La Province and O. trigonantherus from Cao Bang Province in northern Vietnam, are described and illustrated. The former is similar to O. chingii, while the latter is similar to O. rupestris and O. dracaenoides. This paper not only details their taxonomic features and relationships to similar...
Article
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This research provides a description and illustrations for a new species from the Phong Nha-Ke Bang National Park, Cynanchum quangbinhense. The distribution, habitat, phenology and conservation assessment for the species are also presented. The new species differs from closely related species, C. ovalifolium in many characters such as leaf shape, i...
Article
The chemical composition and anti-inflammatory activity of the endemic Lysimachia baviensis were investigated for the first time in this study. A phytochemical fractionation of the methanol extract of L. baviensis resulted in the isolation of a new stilbene (bavienside A, 1) and two new chalcone glycosides (baviensides B and C, 2 and 3). Their stru...
Article
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Hemiboea chanii , a new species of Gesneriaceae from Ha Giang Province, northern Vietnam, is here described and illustrated. It has many branched stems, diamond-shaped involucre with two cirrose opposite apices, a pink corolla, red spotted inside, and a flowering time in January-February. Among congeners with an externally hairy corolla, this new s...
Article
The paper provides additions to the known diversity of Begonia in Vietnam and Laos. One species new to science from Lao PDR (B. vivipara) and three new species from Vietnam (B. aspersa, B. gracilifolia, B. maculifolia) are described. Three species (B. rotundilimba, B. versicolor, B. wenshanensis) are reported as new records for the flora of Vietnam...
Article
Peliosanthes longiracemosa, a new species from limestone areas of northern Vietnam, is described and illustrated. It is most similar to P. macrostegia in having a distally incurved staminal corona and a distinct pyramidal style, but clearly distinguishable chiefly by the broader leaf blades with more longitudinal veins and closer transverse veinlet...
Article
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Alpinia laosensis was previously placed in synonymy under A. conchigera. However, a critical examination of herbarium specimens (including type material) and living plants of A. laosensis and A. conchigera reveals that they are two separate species. Alpinia laosensis can be distinguished from A. conchigera by the shape of its fruits, shape and size...
Article
We describe and illustrate Ophiopogon robustus and Peliosanthes rubra from northern Laos and P. convallarioides from central Vietnam as species new to science. Ophiopogon robustus is close to O. platyphyllus from southern China, P. rubra is similar to P. densiflora from Laos and P. convallarioides is close to P. argenteostriata from Laos and Vietna...
Article
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Begonia catbensis , a new species in Begonia sect. Coelocentrum is described and illustrated. The new species was discovered in lowland limestone hills at Cat Ba National Park and can be easily distinguished from all its congeners by having dendritic hairs on the petiole, adaxial veins and stipules, fimbriate bracts and bracteoles, dense conical bu...
Preprint
Full-text available
Hemiboea chanii , a new species of Gesneriaceae from Ha Giang Province, northern Vietnam, is here described and illustrated. It has many branched stems up to 90 cm, with 12–16 nodes, involucre diamond with two cirrose opposite apexs, pink corolla with red spotted inside, and flowering time in January–February. Among congeners with abaxially hairy c...
Article
Leptomischus anisophyllus, a new species of Rubiaceae, is described and illustrated, and its conservation status is discussed. The species was discovered in 2017 during a botanical survey of Pu Mat National Park (Nghe An Province, Central Vietnam). The new species is remarkable by its anisophylly, a rare feature in Leptomischus. Besides, Leptomisch...
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
Mouretia oblanceolata, discovered in central Vietnam, is described as a new species of the tribe Argostemmateae in the family Rubiaceae. The new species is most similar to Mouretia tonkinensis and M. vietnamensis but differs from them by the following traits: erect to sub-erect habit, abaxially glabrous, obcordate stipules, oblanceolate leaves, 12–...
Article
Rohdea dangii, a new species from limestone areas of Son La and Dien Bien Provinces in northwestern Vietnam, is described and illustrated. It is apparently most closely related to R. tonkinensis described from northern Vietnam, for these two species share an elongate aerial stem with no cataphylls (except for those at the base of the peduncle), nar...
Article
Aspidistra magnifica, a new species from Mount Cà Đam, Quảng Ngãi Province, Central Vietnam, is described and illustrated. It is similar to A. maguanensis in having purple-black flowers, twelve perigone lobes and stamens, and a table-shaped pistil, but differs by its somewhat elliptic leaf blades, short flowering peduncles, much large broadly campa...
Article
The paper describes a new species of Aspidistra discovered in Laos, namely A. nitens Aver., K. S. Nguyen et Tillich in addition to ten species (A. elegans, A. glandulosa, A. khangii, A. laongamensis, A. laotica, A. lurida, A. medusa, A. purpureomaculata, A. globulifera, A. subrotata) earlier reported in this country. The new species is most similar...
Article
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This study presents the morphological characteristics, colour illustration, biological information, ecology and distribution of Aspidistra papillata G.Z. Li, formerly considered as an endemic species to China, but recently discovered and recorded for the Flora of Vietnam, to identify new aspects of this species.
Article
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The present study reports newly recorded species of vascular plants for the flora of Vietnam found in the recently established Bat Xat Nature Reserve in Lao Cai province, close to the border with Yunnan province of China. Thirteen species belonging to eleven families are reported: Acanthaceae (Strobilanthes helicta), Actinidiaceae (Actinidia mellia...
Article
This paper continues the publication of Aspidistra species newly discovered and reported in the flora of Vietnam. It includes illustrated diagnosis of one species new for science, A. angustata Aver., K.S. Nguyen & Tillich and notes on two species, A. chunxiuensis C.R. Lin & Yan Liu, and A. guangxiensis S.C. Tang & Yan Liu newly recorded in the coun...
Article
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Leptomischus hiepii , a new species of the tribe Argostemmateae from Son La province, northwestern Vietnam, is described and illustrated. Morphologically it allies to L. wallichii , L. erianthus and L. funingensis by sharing a similar habit, large stipules and similar corolla shape, but it differs by its anisophyllous leaves, 1-flowered inflorescen...
Article
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The paper presents new data on the orchid diversity in Vietnam obtained in 2016-2020. It contains descriptions of one genus (Apetalanthe) and two species new to science (Apetalanthe gracilis, Nervilia appressifolia), as well as one genus (Neottianthe) and four species (Calanthe tricarinata, Collabium yunnanense, Dendrobium praecinctum, Neottianthe...
Article
his paper continues the publication of newly obtained results from a continuing taxonomic investigation of the genus Aspidistra in Laos and Vietnam. It includes illustrated diagnoses of two new species, A. melanaster Aver., K.S. Nguyen & Tillich, A. obliqua K.S. Nguyen & Aver., two new varieties, A. semiaperta Aver. & Tillich var. globulifera Aver....
Article
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The border area between south-eastern Yunnan, China and northern Vietnam is one of the regions with richest biological diversity including that of the fern genus Angiopteris (Marattiaceae). Based on the analysis of morphology and DNA sequences of multiple chloroplast regions ( atpB , rbcL , rps4-trnS spacer and trnL-F spacer), we revised Angiopteri...
Article
We describe a new species, Peliosanthes cupuliformis, from central Laos with photographic illustrations and relevant taxonomic data. The species appears to be a local endemic confined to a karstic limestone area of Khammouane Province (Boualapha District). It is readily distinguishable from all other congeners by a suit of unique traits such as the...
Book
Full-text available
The Bat Dai Son Mountain area belongs to Bat Dai Son Nature Reserve and additionally includes allied territories of Quan Ba District in Ha Giang Province of northern Vietnam. The study of the area was based on cooperation between the Institute of Ecology and Biological Resources (Vietnam Academy of Sciences and Technology) and the Komarov Botanical...
Article
Tupistra nganii is described and illustrated as a new species from Ha Giang Province in northern Vietnam and Yunnan Province in southwestern China. The new species is most similar to T. muricata from Thailand and Laos, from which it differs by the greenish white or yellow perianth and longer exserted stamens. Additionally, Tupistra longispica is re...
Technical Report
Full-text available
HERBARIUM COLLECTIONS FROM BAT DAI SON MOUNTAIN AREA (NORTHERN VIETNAM, HA GIANG PROVINCE, QUAN BA DISTRICT) MADE IN 1995–2019 Averyanov L.V., K.S. Nguyen, T.H. Tran, A.L. Averyanova, H.T. Nguyen, T.V. Maisak. The document contains labels for 2569 collecting numbers made in Bat Dai Son Mountain area administratively belonging to Quan Ba District, H...
Article
Two new neolignan sesquiterpenoids, chevalierinol A (1) and chevalierinol B (2), were isolated from the ethyl acetate extract of Magnolia chevalieri leaves, together with twelve known compounds (3–14). Their structures were elucidated by analysis of spectroscopic data including 1D, 2D and mass spectra and compared with the reported data. Compounds...
Article
Ophiorrhiza hiepii and O. hainanensis are reported as a new species and a new record for Vietnam respectively. O. hiepii is morphologically similar to O. subrubescens but differs by its smaller habit, usually unbranched stems, fewer secondary veins, umbelliform and sub-congested cymes, shorter corolla tubes and shorter stigma lobes in short-styled...
Article
Peliosanthes crassicoronata is described and illustrated as a new species from southern Vietnam. It somewhat resembles P. macrostegia in having drooping bowl-shaped purplish flowers, but is readily distinguishable by the larger leaves with more numerous longitudinal veins, internally thickly ribbed staminal corona, and pistil with a hexagonal ovary...
Article
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Based on morphological data, Paraboea villosa from limestone areas of northern Vietnam is described and illustrated as a new species. It is similar to Paraboea middletonii Triboun, P. rufescens (Franch.) B.L. Burtt and P. umbellata (Drake) B.L. Burtt, but differs in its almost ebracteate inflorescence, small white flowers, very short peduncles, abs...
Article
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This paper continues the publication of new data obtained during field studies in remote and poorly studied regions of Laos in 2015–2018. It provides descriptions of two new species (Bulbophyllum brachyscapum Aver. and Sunipia saccata Aver.), emended descriptions of two previously published but insuffi ciently known species (Cleisostoma verrucosum...
Article
Spiradiclis hainanensis H.S. Lo and S. purpureocaerulea H.S. Lo (Rubiaceae) are reported as new additions to the flora of Vietnam. In Vietnam, the genus Spiradiclis has been represented by only two species, S. leptobotrya (Drake) Pit. and S. caespitosa Blume. During our field investigations in the Lao Cai and Ninh Binh Provinces of northern Vietnam...
Article
Aspidistra babensis K.S. Nguyen, Aver. & Tillich, a new species of Asparagaceae from limestone mountains of Bac Kan Province in northern Vietnam, is described and illustrated. Morphologically, it is close to A. stricta, sharing a perigone that is upright and split almost to base, and with fleshy perigone lobes. Aspidistra babensis however differs f...
Article
Two new species in Begonia sect. Coelocentrum, Begonia acutis, and B. remusatifolia, have been discovered in the karst regions of northern Vietnam, one of the richest habitats for Begonia. The differences of the two new species were compared with other peltate-leaved species in China and Vietnam, including B. cavaleriei, B. pulvinifera and B. wangi...
Article
Full-text available
Begonia comprises at least 1850 species, most of which are local endemics. The greatest genus diversity is observed in tropical zone of America and Asia with particular rich area in Indochinese Peninsula. Meanwhile, the inventory of the genus in this region remains far from acceptable completing. Until recently, only 20 species were documented in L...
Book
The inventory of plant diversity, flora and vegetation in northeastern part of Hin Nam No National Protected Area (HNN NPA) is based on studies of 13 locations, both in sandstone (Phou Chuang Mountain) and in rocky karstic limestone at elevations 180–1492 m a.s.l. Six kinds of primary plant communities were recognized and described. They are: lowla...
Article
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Hemiboea malipoensis Y.H. Tan,recently described from Malipo County,Yunnan Province,China,is newly found in Quan Ba District,Ha Giang Province,North Vietnam,and the vouchers are kept in the herbaria of Institute of Ecology and Biological Resources,Hanoi,Vietnam (HN) and Komarov Botanical Institute,St. Peterburg,Russia (LE). Its morphological descri...
Article
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Three species, Bulbophyllum layae, B. metallica and B. papilligerum (all from sect. Cirrhopetalum) are described as new for science. All of these novelties are local endemics of limestone areas of northern Vietnam. Additionally, three species, B. alcicorne (sect. Brachystachya), B. psittacoglossum and B. yunnanense (both from sect. Sestochilus) are...
Article
The genus Aspidistra Ker-Gawler (1822 plate 628), overlooked for decades, is recently remarkably fast growing. During the past decade, about 90 species new to science were discovered and described, mainly from southern China, Vietnam, and Laos. With its diversity in flower morphology Aspidistra is among the most spectacular genera of Monocotyledons...
Article
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The paper continues our recent publication of new original data on orchid diversity in Vietnam (Averyanov and Gruss, 2018a-d; Averyanov et al., 2018a-e; Gruss et al., 2018) obtained in 2017-2018. It includes data on 3 orchid species new for science (Coelogyne dolichopoda, Liparis robustior and Oberonia khuongii) and 5 species, new for the flora of...
Article
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This paper continues the publication of newly obtained results from a continuing taxonomic investigation of the genus Aspidistra in Laos and Vietnam. It includes diagnoses of two new species, A. medusa Aver., K. S. Nguyen & Tillich and A. triquetra Aver., Son, Tillich & K. S. Nguyen and amended descriptions of A. khangii Aver. et Tillich and A. loc...
Article
The leafless species Hoya aphylla Aver. N.S. Khang & Averyanova (Apocynaceae) is described and illustrated as a new species for science from Hin Nam No National Protected Area of Laos (central Laos, Khammoune province). In its floral morphology, this new species may be similar to H. lyi, H. carnosa and H. multiflora, but it differs in corona color...
Article
Boeica konchurangensis B.H.Quang, D.V.Hai & Mich.Möller, a new species of Gesneriaceae from the Gia Lai Province of Vietnam is described, illustrated, and colour photographs of the species are provided. This new species has an almost actinomorphic corolla and shows morphological similarities with B. porosa, but differs from it by a shorter peduncle...
Article
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Elatostema (Urticaceae) comprises several hundred herbaceous species distributed in tropical and subtropical Africa, Asia, Australia and Oceania. The greatest species richness occurs on limestone karst in Southeast Asia. Taxonomic revisions of Elatostema are largely out of date and contradict each other with respect to the delimitation of Elatostem...
Article
Through field observations, recollections at known sites and research on specimens and relevant literature, Ophiorrhiza alatiflora H.S.Lo is re-instated; O. alatiflora H.S.Lo var. trichoneura H.S.Lo and O. aureolina H.S.Lo f. qiongyaensis H.S.Lo are reduced to the synonym of O. baviensis Drake and O. subpunicea Craib, respectively. The lectotype of...
Article
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The paper continues publications of new data on orchid diversity in Vietnam (Averyanov and Gruss, 2018a-d; Averyanov et al., 2018a-e, 2019; Gruss et al., 2018) obtained in 2017-2018. It includes data on 4 orchid species new to science (Aerides phongthuyii, Cleisostoma uniseta, Macropodanthus brevidentatus and Schoenorchis tatonii) and 2 species new...
Article
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Tuspistra tripartita Aver., N. Tanaka & K.S. Nguyen, a new species from central Lao P.D.R., is described and illustrated. It is closely related to T. khangii, T. patula and T. gracilis from northern Vietnam. The name Tupistra extrorsandra (N. Odyuo, D.K. Roy & Aver.) N. Tanaka & Aver. is proposed as a new combination based on Rohdea extrorsandra de...
Article
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Loropetalum flavum (Hamamelidaceae) is described and illustrated as a new species from Bat Dai Son Mountains situated in the northern Vietnam. Recently discovered plant was observed as a typical element of the rich primary forest found on the highly eroded karstic limestone mountain formations allied to the border with China. The new species is cha...
Article
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The new species, Chiloschista pulchella (Orchidaceae: Aeridinae) was discovered in Hin Nam No Nature Protected Area, Khammoune Province of the central Laos. The paper provides detailed description and illustration of this species, which is identified as a local endemic of karstic rocky limestone of the northern part of the protected area. It differ...
Article
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One new and seven known phenolic compounds were isolated from the twigs of Xyloselinum leonidii, and identified by means of spectroscopic methods. They were identified to be a new hydroxyaetophenone, xyloselin (1) together with four coumarins decursinol (2), decursinol glucoside (3), pteryxin (4), and praeroside I (5), two chromones angelicain (6),...
Article
Strobilanthes erecta C. B. Clarke is reported as a newly recorded species from Vietnam and China. Examination of type material revealed that Goldfussia laotica and Strobilanthes suborbicularis are conspecific with S. erecta. In addition, the pollen morphology, line drawing and distribution map of S. erecta are provided.
Article
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Red bayberry (Myrica rubra (Lour.) Siebold & Zucc.), small trees, evergreen, dioecious, natively grows in evergreen broad-leaved forests at elevation of 1580-1875 m a.s.l., and can survive in low nutrient soil at Cao Ma Po commune, Quan Ba district, Ha Giang province. Some data on morphology, phenology, population structure, natural regeneration an...
Article
This paper continues the publication of newly obtained results of a successive taxonomic investigation of the genus Aspidistra Ker Gawler (1822: 628) in Vietnam summarized in a series of recent publications (Averyanov & Tillich 2016, Averyanov et al. 2016, 2017, 2018, Vislobokov 2016, Vislobokov et al. 2016, 2017, Nguyen 2017, Nuraliev et al. 2017)...
Article
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The paper continues our recent publication of new original data on orchid diversity in Vietnam (Averyanov et al., 2018a-c) obtained in 2016-2017. It includes data on 5 orchid species new for science (Calanthe nguyenthinhii Aver., Dendrobium truongcuongii Aver. et Canh, Gastrodia khangii Aver., Nephelaphyllum thaovyae Aver. et Canh and Podochilus tr...
Article
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A second species of Silvorchis, until now considered to be a presumably extinct monotypic genus endemic to western Java has been discovered in southern Vietnam. The species, here named as S. vietnamica, is described and illustrated, with data on its distribution, ecology, phenology and estimated conservation status. A key for identification of the...
Article
This paper continues the publication of newly obtained results from a continuing taxonomic investigation of the genus Aspidistra in mainland southeast Asia. It includes descriptions and illustrations of seven taxa discovered in China and Vietnam, A. deflexa Aver., Tillich & V.T. Pham, A. heterocarpa Aver., Tillich & V. T. Pham var. heterocarpa, A....
Article
A new monotype genus Xylacanthus Aver. et K. S. Nguyen with one species, X. laotica Aver. et K. S. Nguyen (Acanthaceae, Acanthoideae, Ruellieae), is described and illustrated. Described genus has arborous living form rather unusual among in Acanthaceae. This small deciduous tree was observed as a main co-dominant of primary deciduous xerophytic kar...
Article
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The paper continues publication of new original data on orchid diversity in Vietnam (tribes Cymbidieae and Vandeae) obtained in 2016-2018. It includes da