Nguyễn Văn Cảnh

Thu Dau Mot University

The paper presents new data on the orchid diversity of Vietnam obtained mainly during the fieldwork of 2023–2024, as well as a result of investigation of the herbarium and garden collections of Russia and Vietnam. It includes five species new to science, namely Cleisostoma truongquanii, Cymbidium bavuongii, Hemipilia uniflora, Micropera vietnamensi...

The paper presents an illustrated taxonomic survey of Bulbophyllum sect. Macrocaulia in the flora of Vietnam including a key to species identification, data on phenology, habitat, distribution and taxonomic notes for all accepted species. The estimated conservation status of these species in Vietnam is also discussed. Additionally, Bulbophyllum pap...

Peliosanthes epigynica, a new species occurring in a dry coastal forest in southeastern Vietnam (Ninh Thuan Province) is described and illustrated. It is distinguishable from any other Peliosanthes by a combination of the following character states: comparatively small elliptic leaf blades, drooping narrowly campanulate purple/violet flowers, and a...

The paper presents new data on the orchid diversity of Vietnam obtained mainly during the fieldwork of 2020–2023, as well as a result of investigation of the herbarium collections of Russia and Vietnam. It includes two species new to science, Bidoupia micrantha and Hylophila vietnamensis, and three species new to the native flora of Vietnam, i.e. D...

Chiloschista eckhardii, discovered recently in Ha Giang Province of northern Vietnam, is described as a new species to science. The newly discovered species belongs to group of plants having yellow sepals and petals spotted with dark brown marks. Our newly identified species may be misidentified as C. glabrisepala, C. parishii, or C. quangdangii, w...

Sonerila dongii, a new species from Lam Dong province in South Vietnam, is described and illustrated here. The morphological characteristics of this new species distinguish it from any previously documented species in the Indochina region because it lacks a tuber and likely adapts to periodic drought seasons by utilizing its fleshy stems. Sonerila...

The paper presents new data on the orchid diversity of Vietnam obtained mainly in the course of the fieldwork in 2020–2023, as well as from the investigation of the collections stored at the Herbaria of Russia and Vietnam. It includes descriptions of four species (Appendicula spicata, Dendrobium khanhii, D. vietii, Listera anthropophora) and one va...

A new species, Hoya sungwookii, discovered in southern Vietnam near Nha Trang Town (Khanh Hoa Province) is described and illustrated. It belongs to the type section of the genus and is distinguished from the morphologically closest H. ablongacutifolia (= H. graveolens) in glabrous pedicels, smaller flower 1.1–1.4 cm across, greenish ciliate calyx,...

A new species of Bulbophyllum section Brachyantha was found in Phu Yen province, center of Vietnam, and described as new for science. It most closely resembles Bulb. baosangii, Bulb. trongquyetii and Bulb. nipondhii but differs in many morphological aspects.

39 Novelties in Aspidistra (Asparagaceae, Convallarioideae) with erect stems in the flora of Vietnam: A. quanii, a new species, and A. erecta, a new national record Abstract The paper reports two species of Aspidistra newly discovered in the flora of Vietnam. It includes a description of A. quanii, a species new to science found in the central part...

Two new species of Cymbidium sect. Jensoa (Orchidaceae) are described from southern Vietnam as new for science under the names C. ledinhhienii and C. sungwookii. Both species morphologically are most similar to C. nanulum but clearly differ by the epigeous pseudobulbs and articulate perennial leaves when plant flowers with leaves. Diagnostic charac...

Three species of the genus Hoya (Apocynaceae, Asclepiadoideae) are newly reported for the flora of Vietnam. One species, Hoya honglenae, is described and illustrated as new to science, and two species, H. acuminata and H. phuwuaensis, are reported as new national records known earlier, respectively, in Bhutan, Bangladesh, NE India, W China, Myanmar...

The taxonomical survey of Bulbophyllum sect. Cirhopetallum s. str. with the key for identification of all four species occurring in Vietnam is presented. Bulbophylum thangii, belonging to this section and discovered in Khanh Hoa Province, southern Vietnam, is described as a new species for science. The new species shares prominent tooth on the inne...

The seventh paper of the series on orchid diversity in Vietnam includes descriptions of four species new to science (Goodyera umbonata, Myrmechis brachyscapa, Rhomboda obcordata, and Vietorchis proboscidea) and five new national records (Calanthe speciosa, Habenaria coultousii, Myrmechis urceolata, Paphiopedilum barbigerum var. barbigerum, and Peri...

During our floristic expedition in South Vietnam, a wild taxon Zingiber densissimum (sect. Cryptanthium) was recognized as a newly recorded species for the flora of Vietnam. The taxonomic treatment with a description is provided, along with photographs, distribution, ecology, a conservation assessment, and morphological comparison with its alliance...

Two new species, Peliosanthes annamensis and P. virescens from Dak Lak Province in southern Vietnam, are described and illustrated. The former is morphologically similar to P. crassicoronata, while the latter to P. argenteostriata. We also describe and illustrate one new variety, P. nivea var. acutiloba from Khammouane Province, central Laos. Pelio...

An unusual species of Phaius discovered in the Da Nang City Area in southern Vietnam is described here as new to science. It is similar to P. hekouensis but can be recognized by the smaller habit, flower color, lip ornamentation, spur, and column characters. The standard taxonomic description, as well as data on its distribution, ecology, phenology...

A newly discovered species belonging to the genus Chiloschista has been found in the Northern region of Vietnam, specifically in Ha Giang Province. This species is being described as a novel addition to scientific knowledge. It shares similarities in plant habit and flower color scheme with C. parishii and C. glabrisepala. However, it can be distin...

A new species of Camellia sect. Piquetia (Theaceae), C. hiepii sp. nov. from the Chu Mu Mountains, M'Drak District, Daklak Province, Vietnam, is described and illustrated. The new species is most similar to C. longii Orel & Luu, but differs in having young branches sparsely pubescent, larger leaf blades, more secondary veins, flowers 8-9 cm in diam...

The paper provides a short annotated taxonomic review of Bulbopyllum sect. Tripudianthes from the flora of Vietnam along with a species-level key for identification. The section in Vietnam includes five species, one of which is a new species for science and described under the name, B. viridipallidum. The new species was found recently from Kon Tum...

Morphological variability of the widespread Aeginetia acaulis is reassessed in the context of the taxonomic boundaries of this species. Aeginetia sessilis considered to be endemic to the Western Ghats of India is demonstrated to lack any clear structural differences from A. acaulis, representing a morph of the latter species with shortly pedicellat...

This paper presents new data on the orchid diversity of Vietnam obtained from field explorations made mainly in 2015–2022, as well as from the study of some historical collections housed at the Herbaria of Russia and Vietnam. It includes descriptions of two species new to science (Coelogyne phitamii and Cymbidium sangii), reports of one genus (Stig...

Coelogyne lecongkietii (C. sect. Panisea) was found in Lac Duong District, Lam Dong Province, southern Vietnam (Da Lat Paleau, Central Highlands), and is described here as a new species for science. It resembles C. sagittata in having the backward pointed side-lobes of the lip, but strongly differs in the smaller flower, shorter side-lobes, and dis...

A new species of Bulbophyllum (Orchidaceae), named as B. sondangii discovered in Da Lat Plateau (Da Lat Town area, Lam Dong Province of southern Vietnam) is described and illustrated. The new species is similar to B. andersonii and B. trongsaense, but can be distinguished by a short seta at the apex of median sepal and petals; almost entire margin...

Parahellenia trongduyii, a new species of Costaceae from Vietnam, is described and illustrated. The new species is similar to P. tonkinensis, but differs in unbranched or barely branched stems, narrowly triangular-lanceolate glabrous buds, bract apex with a soft mucro, yellow to whitish yellow labellum with longitudinal orange to red lines at cente...

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...

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...

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.

Coelogyne sondangii is described as a species new for science. It allies to the group of former Panisea species with white flowers, namely C. albiflora, C. demissa, C. yunnanensis, C. panchaseensis, and C. sagittata, but differs from them in big flowers, narrowly spatulate lip with erose margin of lobes and irregularly denticulate column wings. In...

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...

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...

Tupistra thangii, a new species from Lam Dong Province, southern Vietnam, is described and illustrated. It is most similar to T. clarkei from eastern Nepal and northeastern India, but differs mainly in its broader leaves, upright or ascending spike, smaller flowers, laterally strongly revolute perianth lobes, stamens adnate to the subbasal portion...

Begonia kimlongii is described as a new species endemic to Vietnam, from the montane forests of Dak Lak Province. It is mostly similar with Begonia cucphuongensis but can be distinguished by the oblanceolate to obovate leaves, terminal inflorescence with dimorphic bracts and 5-tepaled pistillate flowers. Using IUCN criteria, B. kimlongii is propose...

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...

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....

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...

Gastrochilus pankajkumarii, found in the Central Highlands of Vietnam, is described as a new species for science. The protologue includes color analytical photos of the new species and data on phenology, ecology, and distribution. Morphological comparisons with similar species are presented.

Dendrobium parahendersonii discovered in southern Vietnam is described as new species to science. It belongs to D. sect. Crumenata, and resembles D. hendersonii and D. exile in having a filiform, reed-like stem swollen at the base into a quadrangular ellipsoid pseudobulb and flowering from the leafless part of stem but differs clearly in the detail...

An overview of the orchid genus Corybasin Vietnam is presented. It was known to be represented by a single species, C. annamensis. In this article, we report two new records, C. himalaicus,and C. geminigibbus. Detailed descriptions, synonyms, type data, information on ecology and phenology, distribution and color plates are provided for all thre...

Vietnam is an important hotspot for Begonia in Southeast Asia. Due to its broad latitudinal range and varied terrain, it has developed a rich biodiversity of flora, of which the genus of Begonia is one of the most striking taxa. In this study, we provide a checklist of Begonia found in Vietnam, including a new species: B. jubar V.T.Pham & C.W.Lin,...

Aspidistra thuongiana is described and illustrated as a new species from the South Central Coast region of Vietnam. The new species has bright yellow flower and a slender pistil with a minute stigma. It is morphologically close to A. longipedunculata, but differs in shorter peduncle, bowl-shaped (vs. campanulate) perigone, shorter ovate (vs. oblong...

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...

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...

The genus Octarrhena (Orchidaceae) is distributed predominantly in Malesia and Papuasia. Its presence in eastern Indochina was uncovered as recently as in 2015 simultaneously with a description of O. minuscula from the Central Highlands of Vietnam. Here, we describe two more species of the genus, O. emarginata and O. perpusilla, also endemic to thi...

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...

The orchid species new for science, Cylindrolobus chienii (Orchidaceae) discovered on Chu Mu Mountain, M'Drak District, Dak Lak Province of southern Vietnam is described and illustrated. It morphologically close to C. gloensis and C. bidupensis but differs from them in glabrous 2-flowered inflorescence, calli on labellum and character of the lip in...

By reviewing all scientific names from more than 60 literature, the provided checklist has updated 43 newly discoveries species from Vietnam in the past twenty years. Currently, 126 species and five varieties of five genera of Theaceae in the country according to APG4 classification system are recorded, of which, 95 species and two varieties of Cam...

An overview of the orchid genus Corybas in Vietnam is presented. It was known to be represented by a single species, C. annamensis. In this article, we report two new records, C. himalaicus, and C. geminigibbus. Detailed descriptions, synonyms, type data, information on ecology and phenology, distribution and color plates are provided for all three...

Hoya lamthanhiae V.T. Pham & Kloppenb. is described and illustrated. The molecular data is provided; this species was found in Dak Lak province, southern Vietnam. Diagnostic features of the new species are a milky latex lithophytic vine and pure white with red-purple centre flowers. The described species clearly differs from closely related H. hain...

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...

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...

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...

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...

The paper continues publication of new original data on orchid diversity in Vietnam (tribes Cymbidieae and Vandeae) obtained in 2016-2018. It includes data on 2 genera and 10 species new for the flora of Vietnam. Among them, six species are new to science (Ascocentrum hienii, Biermannia canhii, Cymbidium tamphianum, Gastrochilus setosus, Malleola l...

Averyanov L.V., J. Ponert, P.T. Nguyen, V.D. Nong, K.S. Nguyen, V.C. Nguyen. 2017. Ein Überblick über Dendrobium Sw. sect. Formosae (Benth. & Hook.f. in Kambodscha, Laos und Vietnam. OrchideenJournal 24, 4: 146-163.

This paper provides new data on 33 new or rare species of Hoya obtained in feldwork mainly during 2012–2017 in eastern Indochina including Cambodia, Laos and Vietnam. These data include illustrated descriptions of three species new for science, as well as illustrated records of 24 species new for the floras of the studied countries. When these new d...

Die Vielfalt des Paphiopedilum gratrixianum – Paph. daoense Komplexes in Indochina

This taxonomic survey of Dendrobium section Formosae in the flora of Cambodia, Laos and Vietnam includes 19 species (Dendrobium bellatulum Rolfe, D. cariniferum Rchb.f., D. chapaense Aver., D. christyanum Rchb.f., D. daklakense Tich, Schuit. & J.J. Verm., D. draconis Rchb.f., D. infundibulum Lindl., D. kontumense Gagnep., D. longicornu Lindl., D. m...

This paper summarizes results of joint efforts of professional botanists and orchid enthusiasts on studies of Vietnamese native orchids during years 2013–2016. It provides new original data about the discovery of 1 genus (Grammatophyllum Blume) and 29 orchid species new for the flora of Vietnam. Valid name, main synonyms, data on type, ecology, phe...

Modern taxonomic revision of Bulbophyllum sect Hirtula in the flora of eastern Indochina, including Cambodia, Laos and Vietnam based on all available collections and literature data reports 12 species (Bulbophyllum clipeibulbum, B. dasystachys, B. glabrichelia, B. nigrescens, B. nigripetalum, B. parviflorum, B. penicillium, B. phitamii, B. scaphifo...

This taxonomic survey of Dendrobium section Formosae in the flora of Cambodia, Laos and Vietnam includes 19 species (Dendrobium bellatulum Rolfe, D. cariniferum Rchb.

A short review of the genus Cleisostoma in the flora of Vietnam is presented with 9 sections and 28 species among which 9 are locally endemic. Present data show the territory of Vietnam as the richest center of diversity for the genus. Two monotypic sections (Gastrochilopsis, Pterogyne) and three species (Cleisostoma lecongkietii, C. phitamii, C. t...

This paper summarizes results of joint efforts of professional botanists and orchid enthusiasts on studies of Vietnamese native orchids during the last three years. It provides new original data about the discovery of 4 genera (Brachypeza Garay, Drymoda Lindl., Macropodanthus L.O. Williams, Octarrhena Thwaites) and 44 orchid species new for the flo...