Flora Of Vietnam Research Articles

Taxonomic Notes on Chunia bucklandioides (Exbucklandioideae, Hamamelidaceae)

Chunia bucklandioides, a threatened species of the monotypic Chunia (Exbucklandioideae, Hamamelidaceae) that was known only from Hainan Island, China, is reported here for the flora of Vietnam. Chunia bucklandioides is most similar to Exbucklandia populnea, but differs from it mainly by floral characters such as inflorescences (spicate 12–16-flowered vs. capitate 8–12-flowered), filament length (3–4 mm, somewhat shorter or as long as anther vs. ca. 5 mm, much longer than anther), anthers (4-locular vs. 2-locu-lar), and anther color (red vs. yellowish). Chunia bucklandioides also resembles Mytilaria laoensis, but is easily distinguished from it by morphological characters of stipules (in pairs, broadly ovate, subrounded vs. solitary, conical) and sepals and petals (absent vs. present). In addition an extended taxonomic description, we provide habitat details, illustrations and assessment of the conservation status of C. bucklandioides.

New taxa and new records in Aspidistra (Convallariaceae s.s.) of Laos and Vietnam

This 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., K.S. Nguyen & Tillich, A. lutea Tillich var. luteo‐rubra K.S. Nguyen, Aver. & Tillich, and notes on two species, A. austroyunnanensis G.W. Hu, Lei Cai & Q.F. Wang and A. hekouensis H. Li, C.L. Long & Bogner newly recorded in the flora of Vietnam. Color illustrations, new or updated data on morphology, ecology, phenology, tentative relationships, distribution and conservation status are provided for all the mentioned taxa.

Amomum glabrum S. Q. Tong (Zingiberace), a new record for the flora of Vietnam

Abstract: Amomum glabrum S. Q. Tong (Zingiberaceae), collected from the Provinces in North Central Vietnam (Thanh Hoa province: Xuan Lien Nature Reserve; Nghe An: Pu Mat National Park, Pu Huong and Pu Hoat Nature Resever; Ha Tinh: Vu Quang National Park; Quang Binh: Phong Nha-Ke Bang National Park; Thừa Thiên Huế: Bạch Mã National Park), is reported here as a new record for the flora of Vietnam, which raised the species number of Amomum to 13. A detailed description and coloured photographs are provided along with data on distribution, ecology, phenology, conservation status and notes on the relative species
 Keywords: Amomum, Amomum glabrum, North Central, Zingiberaceae.
 References
 [1] de Boer H., Newman M., Poulsen A.D., Droop A.J., Fér T., Lê T.T.H., Hlavatá K., Lamxay V., Richardson J.E., Steffen K. & Leong-Škorničková J., Convergent morphology in Alpinieae (Zingiberaceae): Recircumscribing Amomum as amonophyletic genus, Taxon 67 (1) (2018) 6–36.[2] Gagnepain F., Amomum. In: Lecomte, P. H., Fl. Indo-Chine 6(1) (1908) 102–117.[3] Pham Hoang Ho, An illustrated Flora of Vietnam 3: 432–461, Youth Publication, Ho Chi Minh City (in Vietnamese).[4] Nguyen Quoc Binh, Classification Research in the Zingiberaceae in Vietnam, Biology PhD., Ha Noi, 2011 (in Vietnamese).[5] V. Lamxay and M.F. Newman, Are vision of Amomum (Zingiberaceae) in Cambodia, Laos and Vietnam, Edinburgh Journal of Botany 69(1) (2012) 99-206.[6] Ly Ngoc Sam & Jana Leong-Skornickova, Amomum cristatissimum (Zingiberaceae: Alpinieae), a new species with echinate fruits from central Vietnam, Nordic Journal of Botany 36(3) (2018) https://doi.org/10.1111/njb.01691.[7] Wu D.L. and Larsen K., Flora of China 24: 347-356. St Louis: Missouri Botanical Garden Press, and Beijing: Science Press, 2000.[8] S.Q. Tong, Some new taxa of Zingiberaceae from Yunnan, Acta Phytotaxonomica Sinica 27(4) (1989) 277–292.[9] W. Roxburgh, Amomum. In: Flora Indica 1 (1820) 37–46. Serampore: Mission Press. 

Two newly recorded species of Urticaceae among the flora of Vietnam used as green foods for H'Mong beef cattle

Oreocnide kwangsiensis Hand.-Mazz. and Boehmeria japonica (L. f.) Miq. (Urticaceae) are newly reported among the flora of Vietnam that are used as green foods for beef cattle by local H’Mong people in northern Vietnam in the winter-spring season. The authors provide descriptions, illustrations, notes on utilisation, and a diagnostic comparison of these species with ones that are morphologically similar.

<p><strong><em>Bulbophyllum</em></strong><strong> (Orchidaceae) in the flora of Vietnam III. </strong><strong>The revision of <em>B.</em>sect. <em>Lemniscata</em></strong></p>

Modern taxonomic revision of Bulbophyllum sect. Lemniscata in the flora of Vietnam based on available collections and literature data reports 5 species (Bulbophyllum averyanovii, B. chelicerum, B. comosum B. hirtum, and B. lemniscatoides), one of which (B. chelicerum) is described as a new for science. For all accepted taxa the paper provides valid name and main synonyms with appropriate standard taxonomic references, data on type and other authentic materials, description, data on ecology, phenology, expected conservation status, distribution, notes on biology and taxonomy, list of all studied materials, as well as key for identification of species and their color illustrations. Lectotype for B. lemniscatoides is proposed.

New records for the liverwort and hornwort flora of Vietnam, 1

After the examination of the Cryptogam collection in the Herbarium of the University of Science, Vietnam National University Ho Chi Minh City (PHH), 25 species proved to be new to Vietnam, including one hornwort and 24 liverworts. Among them, four genera:DenotarisiaGrolle,GongylanthusNees,LeiomitraLindb. andLepicoleaDumort. are new records for the country. Diagnostic characters and illustrations are given for some taxa, as well as locality notes and habitat descriptions are provided for each collecting area.

<p><strong>Taxonomic notes on <em>Goodyera </em>(Goodyerinae, Cranichideae, Orchidoideae, Orchidaceae) in China and an addition to orchid flora of Vietnam</strong></p>

Based on fieldwork and examination of fresh as well as preserved specimens, Goodyera bomiensis and G. wolongensis are reduced under the synonymy of G. brachystegia and G. serpens respectively. Goodyera serpens and G. marginata are re-instated as accepted species, and G. afzelii, previously thought to be restricted to Madagascar and Mozambique, is added to the orchid flora of Vietnam.

Kaempferia champasakensis pichean. & Koonterm – A new record species for Vietnam

A new record species Kaempferia champasakensis Pichean. & Koonterm (Zingiberaceae) to the flora of Vietnam is collected on the sandy land, under semi-deciduous sparse forest of Binh Chau - Phuoc Buu Nature Reserve (Ba Ria-Vung Tau). The differenct characteristics between K. champasakensis and Kaempferia genus species were presented. The new taxon can be easily recognized by its leaves (2-3), blade horizontal, near the ground; pure white flowers with the labellum divided twothird to the base and the large white ovate-elliptic to suborbicular anther crest with greatly varied apex. The detailed description and illustrative pictures based on collected samples of Kaempferia champasakensis in Vietnam were reported in this study.

Two new additions to the flora of Vietnam

Among the studied specimens collected from Son Tra Nature Reserve, Vietnam, two new taxa: Oxalis barrelieri L. (Oxalidaceae) and Glochidion acuminatum var. siamense Airy Shaw (Phyllanthaceae) which forms new records to the flora of Vietnam. Taxonomic description, habitat, distribution and uses, and color photographs of both taxa are provided.

New species of Bulbophyllum (Orchidaceae) in the flora of Vietnam

Three taxa, Bulbophyllum cariniflorum var. orlovii (sect. Pleiophyllum), B. sonii (sect. Anisopetalon) and B. ustulata (sect. Brachystachya) are described as new for science. All of these novelties are local endemics of Vietnam. Additionally, four species, B. flavescens (sect. Aphanobulbon), B. ovatum (sect. Desmosanthes), B. physocoryphum (sect. Macrocaulia) and B. wendlandianum (sect. Cirrhopetalum) are recorded for the flora of Vietnam for the first time. These species are endemic of the Indochinese Peninsula in a broad sense, except for B. flavescens having wide distribution in western Malesia. Data on ecology, phenology, distribution, brief relevant taxonomic notes, as well as colour photographs and line drawings of the type and voucher specimens are provided for all reported taxa. Lectotypification is provided for B. wendlandianum.

Jasminanthes tuyetanhiae (Apocynaceae, Asclepiadoideae), a New Species from Vietnam, and J. pilosa New for Vietnam

Jasminanthes tuyetanhiae T.B. Tran & Rodda (Apocynaceae, Asclepiadoideae) is described as a new species from Vietnam. It differs from the morphologically similar J. chunii by its shorter peduncles and by the triangular-ovate calyx lobes. Jasminanthes pilosa, earlier known from China and Thailand, is lectotypified and newly recorded for the flora of Vietnam, fully described and for the first time colour photographs are provided. An appendix with key characters for the separation of all seven Jasminanthes species as well as the key to the species of Jasminanthes are included.

New liverwort records for Vietnam

A short collecting expedition to Vietnam in 2016 yielded 700 specimens of 170 liverwort species of which 79 were new to the flora of Vietnam, including 43 species new to Indochina. Many of the newly recorded species have meta-Himalayan distributions (that predicts occurrence of these taxa in the areas of north-west Vietnam situated in the south-easternmost spurs of the Himalaya). Some species were recorded based on the study of living material, permitting the examination of oil body characteristics for Riccardia and Calypogeia. The known taxonomic liverwort diversity of Vietnam is currently 379 taxa, estimated to represent ca 80% of the actual taxonomic diversity in the country.

Lysimachia rupestris F. H. Chen & C. M. Hu (Primulaceae): a new record for the flora of Vietnam and reconsideration of its taxonomical position

Lysimachia rupestris F. H. Chen & C. M. Hu is reported for the first time in Vietnam, in Cat Ba National Park. The supplemental description of its floral characters is applied. It has glabrous yellow corollas divided near to base, and stamens with short filaments connate basally into a ring and basifixed anthers opening by apical pores. The systematic position of L. rupestris F. H. Chen & C. M. Hu and its closely related species is also discussed.

Aristolochia longeracemosa, a new synonym of A. chlamydophylla (Aristolochiaceae)

Aristolochia Linnaeus (1753: 960) (Aristolochiaceae) comprises about 500 species. The genus has worldwide distribution (Wanke et al. 2006). Recent findings of Aristolochia (Phuphathanaphong 2006, Xu et al. 2011, Huong et al. 2014, Do et al. 2015, Wu et al. 2015), together with the previous treatments for the Flora of Thailand (Phuphathanaphong 1987), the Flora of Vietnam (Pham 2000) and the Flora of China (Huang et al. 2003) confirmed the Thai & Indo-Chinese floristic region as a center of diversity for Aristolochia, with currently about 90 species. A high degree of endemism is found for specific countries (Huang et al. 2003, Phuphathanaphong 2006). However, the delimitation and taxonomic status of some species are still unclear due to limited access to specimen databases, especially for the type specimens in those countries. Notably, recent studies have significantly revised the taxonomic status of several previously described Aristolochia species when herbarium materials from multiple countries in the region were consulted (Do et al. 2014, Do 2016, Zu et al. 2016). On the basis of the examination of the protologue, the type specimens, and recent collections from the herbaria BKF, C, GXMI, HITBC, IBSC, KUN, PE and PEM, we conclude that Aristolochia longeracemosa B. Hansen & Leena Phuphathanaphong (1999: 557), described from collections made in northern Thailand, is conspecific with A. chlamydophylla C.Y. Wu ex S. M. Hwang (1981: 223) from southern China. Hence, we here propose the former as a new synonym of the latter. A detailed comparison of the morphological characters and habitat of these two species is provided.

Capparis pubifolia B. S. Sun (Capparaceae): A newly recorded species of the flora of Vietnam

Capparis pubifolia B. S. Sun를 ë² íŠ¸ë‚¨ì˜ ë¯¸ê¸°ë¡ì¢ ìœ¼ë¡œ ë³´ê³ í•œë‹¤. 본 ì¢ ì€ í˜•íƒœì ìœ¼ë¡œ C. sikkimensis Kurz와 ìœ ì‚¬í•˜ì§€ë§Œ, 소지 위의 털이 회색빛을 띄는 황색이며, 이차맥의 수가 더 ë§Žê³ , 꽃잎 양면 모두에 ì„ ëª¨ê°€ 있으며, 열매가 구형인 ì ì—ì„œ 차이가 난다. 본 ì¢ ì€ 현재까지 중국의 광서성과 운남성에서만 ë³´ê³ ë˜ì—ˆë‹¤. 본 ì¢ ì˜ ë™ì •ì„ 위해 기재, 도해 및 컬러사진을 ì œê³µí•˜ì˜€ë‹¤. 더불어, ê´€ë ¨ì¢ ê³¼ì˜ 형태형질에 대한 비교자료를 ì œì‹œí•˜ì˜€ë‹¤. 주요어: Capparis pubifolia, Capparaceae, ë¯¸ê¸°ë¡ì¢ , ë² íŠ¸ë‚¨

Two jasmine (Oleaceae: Jasminum L.) taxa newly recorded in Vietnam

Two Jasminum taxa i.e. J. hongshuihoense and Jasminum laurifolium var. brachylobum are reported as a new record for the flora of Vietnam. J. hongshuihoense was hitherto known as endemic to China. It differs from the closely related species J. eberhardtii in having more number (4-10) of primary veins and lesser (5-8) calyx lobes. J. laurifolium var. brachylobum is closely allied to J. laurifolium var. laurifolium but it differs in having more flowers in cymes (i.e.1-8) flowers and calyx lobes (i.e. 6-10). Description and color photographs are provided for species identification. Furthermore, a comparison of the diagnostic characters with those of related species is made.

Morphological and anatomical studies of the newly recorded genus <i>Plagiopteron</i> Griff. (Celastraceae) from Vietnam

Plagiopteron Griff. (Celastraceae), collected from Bac Giang Province of Vietnam is reported here as a new generic record for the flora of Vietnam. It is supposedly an early derived member of the subfamily Hippocrateoideae (composed of tribes Campylostemoneae and Hippocrateeae), within Hippocrateaceae. The genus differs from other members of Celastraceae by its many bicyclically arranged stamens. Leaf anatomical studies have been performed to understand various features such as venation, vascular bundles, collenchyma and stomata. Taxonomic notes, description, and photographs are provided, together with short notes on the distribution, ecology and phenology of the species.Bangladesh J. Plant Taxon. 23(2): 161-166, 2016 (December)

Two new records for the flora of Vietnam: Sonerila (Melastomataceae) and Erycibe (Convolvulaceae)

Two recently discovered species from Phu Quoc National Park in southern Vietnam, Sonerila bokorense S.H. Cho and Y.D. Kim (Melastomataceae) and Erycibe citriniflora Griff. (Convolvulaceae), provide new records for the flora of Vietnam. For each species a taxonomic description is presented, together with information on their distribution, habitat and ecology; color photographs of both species are also given.

New Moss Records for Vietnam

Sixty-one species are newly added to the moss flora of Vietnam. Of which, ten genera (Eurhynchiadelphus Ignatov, Huttunen & T.J. Kop., Fleischerobryum Loeske, Forsstroemia Lindb, Geheebia Schimp., Hageniella Broth., Leskeella (Limpr.) Loeske, Pterogoniadelphus M. Fleisch., Rhizomnium (Mitt. ex Broth.) T.J. Kop., Scabridens E.B. Bartram and Torrentaria Ochyra) are newly reported for the country. Scabridens is recorded outside China for the first time. The tropical American Macromitrium longifolium (Hook.) Brid. is newly reported for Asia. The occurrence of Ctenidium pinnatum (Broth. & Paris) Broth. in Vietnam is confirmed. These results make up the moss flora of Vietnam comprising of 816 species (including 50 infraspecific taxa) belonging to 227 genera in 61 families. One hundred and three taxa of mosses are hitherto known only from Vietnam. All new generic records are illustrated based on the local specimens.

New species ofOphiopogon, PeliosanthesandTupistra(Asparagaceae s.l.) in the flora of Vietnam

Five new species named Peliosanthes aperta, P. elegans, P. kenhillii, Tupistra densiflora and T. patula are described and illustrated. These species are very local in distribution and endemic to northern or southern Vietnam. Two other species, Ophiopogon ogisui and Peliosanthes griffithii, are recorded as new to the flora of Vietnam. A key to the species of Tupistra occurring in Indochina and its neighboring regions is also provided.