Hoya aphylla (Apocynaceae,Asclepiadoideae), a new leafless species from Laos

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 and shape of corona segments. Like the first two mentioned species, the new species may be referred to the type section of the genus, but in terms of it its leafless habit it exhibits an isolated position.     

Primulina elegans (Gesneriaceae), a new species from North Vietnam

Primulina elegans (Gesneriaceae), a new species from Vietnam is described. This species is similar to P. gemella and P. diffusa in having stolons and papillose-hispid leaves, but is easily distinguished from them by having 9–15 cymes and corollas with two brown stripes on the adaxial lip and nine purplish lines on the abaxial lip. Furthermore, Primulina elegans differs from P. gemmella by its broadly infundibuliform corollas with purplish glandular pubescent filaments, and from P. diffusa by having three slightly purplish glandular pubescent staminodes.     

Argostemma bachmaense (Rubiaceae,Rubioideae, Argostemmateae), a new species from central Vietnam

Argostemma bachmaense, a new species from central Vietnam, is described and illustrated here. The new species is most similar to A. laoticum and A. vietnamicum but can be distinguished from the latter two by having a well-developed internode with leaf pairs separately arranged along stem, isophyllous or slightly anisophyllous leaves, an oblanceolate to spatulate lamina with attenuate base and lateral veins with 4–5 pairs prominent on abaxially, a terminal, solitary flower, an absent bract, narrowly ovate or broadly lanceolate, 8.5–10.5 × 2.8–4.2 mm petals, 6.5–7.5 mm long stamen with yellow anther, a 8.5–9.5 mm long, exerted style and a globose stigma. Information on ecology, phenology and preliminary conservation assessment of the proposed new species are provided. In addition, we also provide an identification key to the nine Argostemma species found in Vietnam.     

Maclurochloa trangdinhensis (Poaceae: Bambusoideae), a new species from northern Vietnam

A clambering bamboo endemic to northern Vietnam is shown to represent a new species, M. trangdinhensis H.N.Nguyen & V.T.Tran (Gramineae: Bambusoideae‐Bambusinae), which is described and illustrated. It is similar to M. tonkinensis in general appearance, but differs by being covered with appressed white hairs, and by auricles lacking or forming a low rim only, smaller leaf blade 20–24 × 2.3–2.5 cm, and smaller glumes 6–7 × 4.0–4.5 mm. A key to all species of the genus is included.     

Melocalamus grandiauritus (Poaceae: Bambusoideae), a new clambering species from northern Vietnam

Here we describe and illustrate a new species, Melocalamus grandiauritus N.H. Xia, Q.M. Qin & J. B. Ni sp. nov., from the lowland forest in Thanh Hoa Province, Vietnam. Molecular phylogeny based on the GBSSI indicates that this species is a member of Melocalamus. Morphologically, M. grandiauritus is different from all congeneric species in Vietnam. It is somewhat similar to M. pacoensis H.N.Nguyen & V.T.Tran, but is easily distinguished by having much wider suborbicular culm leaf auricles, very high and ventricose auricles of foliage leaves, entire ligules of both culm leaves and foliage leaves, and large leaf blades.     

<Emphasis Type="Italic">Disperis tomaszii</Emphasis> (Orchidaceae,Orchidoideae), a new species from Cameroon

Disperis tomaszii (Orchidaceae, Orchidoideae) from Cameroon is described and illustrated in this study. The new species is morphologically similar to Disperis nitida and Disperis thomensis. Phylogenetic analyses of selected DNA regions (ITS, matK) indicate a possible relationship between the new species and Disperis anthoceros and Disperis dicerochila. The taxonomic affinity between D. tomaszii and the aforementioned species is discussed.     

Chimonocalamus bidoupensis,a new temperate bamboo species (Poaceae: Bambusoideae) from Bidoup National Park,southern Vietnam

A new temperate wood bamboo endemic to Vietnam is described and illustrated as Chimonocalamus bidoupensis N.H.Nghia & V.T.Tran. The new species is similar to C. baviensis in general appearance, but differs by its densely ciliate culms, culm sheaths that are concave at the apex with dense, white hairs on the abaxial surface of the sheath, and perfect florets 7–8 mm long.     

Distichochlamys rubrostriata (Zingiberaceae), a new species from northern Vietnam

A third species of the until recently monotypic genusDistichochlamys (Zingiberaceae) is described from living and preserved material collected in northern Vietnam.Distichochlamys rubrostriata is distinguished from the original species,D. citrea, and the recently describedD. orlowii, on the basis of leaf, inflorescence bract, lateral staminode, and labellum characters.     

越南苦苣苔科石蝴蝶属植物随记暨国家级分布新记录

石蝴蝶属(Petrocosmea Oliv.)植物的现代分布与分化中心位于中国的西南山地以及周边国家和地区,如印度(阿萨姆邦)、缅甸、泰国、越南等也有分布。近年来,中国和中南半岛上各个国家和地区的新分类群和国家级新记录层出不穷,进一步加深了研究人员对中国和中南半岛植物区系以及该属植物在上述区域的多样性的理解。例如,滇黔石蝴蝶[Petrocosmea martinii (H. Léveillé)H. Léveillé]和丝毛石蝴蝶(P. sericea C.Y. Wu ex H. W. Li)曾被认为是中国的特有种,前者分布于贵州、广西北部和云南东南部,而后者仅见于云南东南部。该文报道了这两种石蝴蝶属植物的越南国家级分布新记录。这两个新记录种的发现,使得越南分布的石蝴蝶属植物种的数量上升到了5 种,这些新记录种的报道或暗示未来在与中国西南山地邻近的地区还将会有更多该属的新分类群或新记录有待发现。该文还同时提供了这两个国家级分布新记录物种的描述、图示、濒危等级现状评价以及目前所有越南已知分布的石蝴蝶属植物的检索表以备检索和核对。     

中国双唇兰属(兰科)一新记录种——中越双唇兰

报道了中国双唇兰属Did ymoplexis一新记录种——中越双唇兰Did ymoplexis vietnamica Ormd..该种与双唇兰Did ymoplexis pallens Griff.相似,不同在于该种的花苞片三角形,杯状,唇瓣鳌状,具扁平的附属体,蕊柱两侧具三角形翼.该文提供了该新记录种的形态描述和野外...     

Epidendrumcusiyacoense (Orchidaceae), a new species from Colombia

A new species of Epidendrum, E. cusiyacoense, is described and illustrated based on Colombian material. The novelty belongs to the ‘Garayi subgroup’ and resembles the Ecuadorian endemic E. ilinizae, but is distinguished by the oblong-lanceolate leaf which is over five times longer than wide, 2-flowered inflorescence and entire, papillate lip margins. Epidendrum cusiyacoense is so far exclusively known from Colombia where it grows as an epiphyte in wet páramo, among scrub and Espeletia patches at the altitude of about 3000–3500 m. A key to the identification of species belonging to informal Garayi subgroup is provided.     

A new species ofLiparis (Orchidaceae) from India

Liparis indiraii spec. nova from India is close toL. alata A. Rich. andL. atropurpurea Lindl.     

Bletia greenwoodiana (Orchidaceae), a new species from Durango,Mexico

Bletia greenwoodiana, a species found in oak-pine forests in Durango and Jalisco, Mexico, is described and illustrated. It is distinguished by its purplis flowers, with the dorsal sepal and petals narrowly elliptic and acuminate at the apex. Its trilobed lip has wide lateral lobes, forming short sinuses, with rounded apices. The midlobe is very short, one third of the total length of the lip, with an emarginate apex dividing it into two small lobes.     

Bulbophyllum wuzhishanensis (Orchidaceae), a new species from Hainan, China

Bulbophyllum wuzhishanensis, a new species from Hainan, China, is described and illustrated. The new species is probably related toBulbophyllum ledungense, but differs from it by having a long inflorescence, a column without stelids, and a longer lip.     

Listera fugongensis (Orchidaceae), a new species from Yunnan, China

Listera fugongensis, a new species from Yunnan, China, is described and illustrated. The new species is probably related to Listera nipponica, but differs from it by having green flowers, petals slightly wider than lateral sepals, and a toothed lip with ciliate margins.     

Vantanea ovicarpa (Humiriaceae), a new species from French Guiana

Vantanea ovicarpa, a new species from French Guiana, is described and illustrated.     

Buthid scorpions found in caves; a new species of Isometrus Ehrenberg, 1828 (Scorpiones,Buthidae) from southern Vietnam

A new species, Isometrus (Reddyanus) deharvengi sp. n., is described from caves of the region of Hon Chong, Kien Giang in southern Vietnam. Comments are also added about the scorpion fauna of Southeast Asia and cave dwelling buthid scorpions.