scholarly journals A new species of Psydrax (Vanguerieae, Rubiaceae) from the Gia Lai Plateau, southern Vietnam

PhytoKeys ◽  
2020 ◽  
Vol 149 ◽  
pp. 99-107
Author(s):  
Bui Hong Quang ◽  
The Bach Tran ◽  
Thi Dung Ha ◽  
Hai Do Van ◽  
Huong Nguyen Thi Thanh ◽  
...  
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
Corolla Tube ◽  
The Other ◽  
Conservation Assessment ◽  
Southern Vietnam ◽  
A New Species

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 with a dense tuft of hairs, which clearly distinguishes it from the other species in the genus. A description, vernacular name, conservation assessment, illustration, photographs, and a key to the species of Psydrax in Vietnam are provided.

scholarly journals Tacca khanhhoaensis V.S. Dang & Vuong (Taccaceae), a new species from southern Vietnam

PhytoKeys ◽  
2018 ◽  
Vol 114 ◽  
pp. 115-122
Author(s):  
Van Son Dang ◽  
Ba Vuong Truong ◽  
Thi Phuong Thao Nguyen ◽  
Nghia Son Hoang
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
Conservation Assessment ◽  
Southern Vietnam ◽  
A New Species

Taccakhanhhoaensis V.S. Dang & Vuong (Taccaceae) is described as a new species from Hon Ba Nature Reserve in southern Vietnam. This species is morphologically similar to T.chantrieri and T.ampliplacenta but differs from its allies by several salient characters: size of leaves and petioles, inflorescent much shorter leaves, number of flowers, stigma lobes, buds colour. A description, conservation assessment, together with photographs and a key to the species of Tacca in Vietnam are presented.

Mussaenda recurvata (Rubiaceae), a new species from southern Vietnam with observations on its heterostyly

Phytotaxa ◽  
2017 ◽  
Vol 328 (2) ◽  
pp. 167 ◽  
Author(s):  
AKIYO NAIKI ◽  
SHUICHIRO TAGANE ◽  
HIRONORI TOYAMA ◽  
VAN SON DANG ◽  
TETSUKAZU YAHARA
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
Southern China ◽  
Corolla Tube ◽  
Northern Vietnam ◽  
Southern Vietnam ◽  
A New Species

Herein, Mussaenda recurvata, a new species from Hon Ba Nature Reserve, southern Vietnam, is described and illustrated. This species is morphologically similar to M. longipetala, distributed from southern China to northern Vietnam, in having recurved stipules and densely pilose and puberulent hairs throughout, but differs in its strongly recurved calyx lobes, a shorter corolla tube, and ovate corolla lobes. The species is morphologically heterostylous and it appears to be functionally dioecious. An updated key to Mussaenda species in Vietnam, Laos, and Cambodia is also provided.

The Leptobrachium (Anura: Megophryidae) of the Langbian Plateau, southern Vietnam, with description of a new species

Zootaxa ◽  
2011 ◽  
Vol 2804 (1) ◽  
pp. 25 ◽  
Author(s):  
BRYAN L. STUART ◽  
JODI J. L. ROWLEY ◽  
DAO THI ANH TRAN ◽  
DUONG THI THUY LE ◽  
HUY DUC HOANG
Keyword(s):  
Mitochondrial Dna ◽  
New Species ◽  
Small Body ◽  
Original Description ◽  
The Other ◽  
Sexually Active ◽  
Small Body Size ◽  
Upper Lip ◽  
Southern Vietnam ◽  
A New Species

We sampled two forms of Leptobrachium in syntopy at the type locality of L. pullum at upper elevations on the Langbian Plateau, southern Vietnam. The two forms differed in morphology (primarily in coloration), mitochondrial DNA, and male advertisement calls. One form closely agrees with the type series of L. pullum (but not to its original description due to error), and the other is described as new. Leptobrachium leucops sp. nov. is distinguished from its congeners by having small body size (males with SVL 38.8–45.2), the upper one-third to one-half of iris white, a blue scleral arc, a dark venter, and sexually active males without spines on the upper lip. Leptobrachium pullum and L. mouhoti, a recently described species from low-elevation slopes of the Langbian Plateau in eastern Cambodia, are morphologically divergent but genetically similar, warranting further investigation into geographic variation in the red-eyed Leptobrachium of southern Indochina.

Taxonomic status of two populations of Bent-toed Geckos of the Cyrtodactylus irregularis complex (Squamata: Gekkonidae) with description of a new species from Nui Chua National Park, southern Vietnam

Zootaxa ◽  
2018 ◽  
Vol 4403 (2) ◽  
pp. 307 ◽  
Author(s):  
OLIVIER S. G. PAUWELS ◽  
ROMAN A. NAZAROV ◽  
VLADIMIR V. BOBROV ◽  
NIKOLAY A. POYARKOV
Keyword(s):  
New Species ◽  
National Park ◽  
Species Complex ◽  
Nature Reserve ◽  
Taxonomic Status ◽  
Southern Vietnam ◽  
Number Of Species ◽  
Two Populations ◽  
A New Species

Based on genetic, morphological and chromatical comparisons we evaluate the taxonomic status of two southern Vietnamese forest-dwelling populations of the Cyrtodactylus irregularis species complex. We confirm the allocation of the population from Binh Chau—Phuoc Buu Nature Reserve (Ba Ria—Vung Tau Province) to C. cattienensis and we describe the population of Nui Chua National Park (Ninh Thuan Province) as Cyrtodactylus sangi sp. nov. This brings to 18 the number of species within the C. irregularis complex and to 41 the number of described Cyrtodactylus species recorded from Vietnam. 

Aspidistra minor (Asparagaceae, Nolinoideae), a tiny new species from Vietnam

Phytotaxa ◽  
2019 ◽  
Vol 402 (1) ◽  
pp. 63 ◽  
Author(s):  
NIKOLAY A. VISLOBOKOV ◽  
ANDREY N. KUZNETSOV ◽  
SVETLANA P. KUZNETSOVA ◽  
MIKHAIL S. ROMANOV ◽  
MAXIM S. NURALIEV
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
Flower Structure ◽  
Southern Vietnam ◽  
A New Species

Aspidistra minor is described and illustrated as a new species from southern Vietnam (Gia Lai province, Kon Chu Rang Nature Reserve). The new species possesses very small ovate to elliptic leaf blades and very small flowers with stamens inserted at the base of the perigone. In flower structure, the new species resembles A. leucographa and A. elatior but strongly differs in shape of leaf blades and position of stamens.

A new species of Comatricha (Myxomycetes) from southern Vietnam

2014 ◽  
Vol 48 ◽  
pp. 188-195 ◽  
Author(s):  
Yu. K. Novozhilov ◽  
D. W. Mitchell
Keyword(s):  
New Species ◽  
Tropical Forests ◽  
Nature Reserve ◽  
Morphological Difference ◽  
Moist Chamber ◽  
Spore Ornamentation ◽  
Southern Vietnam ◽  
The Stability ◽  
Over The Top ◽  
A New Species

A new species Comatricha spinispora Novozh. et D. W. Mitch. was obtained as field collections and isolated from moist-chamber cultures from samples of ground litter. Specimens of sporocarps and substrates for moist chamber cultures were collected in deciduous monsoon tropical lowland forests (Cat Tien National Park, Vinh Cuu Nature Reserve), mixed montane tropical forests and cloudy tropical forests (Bi Dup-Nui Ba Nature Reserve) of southern Vietnam during surveys carried out in December 2010, November 2011, 2012. The morphology of representative specimens of sporocarps was examined by light and scanning electron microscopy and micrographs of relevant details are provided. Spore ornamentation consists of long spines 0.5–0.8 μm long and 6–8 very small additional spines 0.1–0.3 μm long densely distributed over the top part of spine surface and visible only by SEM. The stability of the taxonomic characters of the species was confirmed by several collections obtained over a period of three field seasons in field as well as in moist chamber cultures. Comatricha spinispora resembles C. rutilipedata H. Marx in overall shape and size of the sporocarps but has dark brown bottom of stalk and slightly larger spores decorated by scattered long spines. The main morphological difference between C. spinispora and Macbrideola ovoidea Nann.-Bremek. et Y. Yamam. lies in shape and colour of sporocarp and spore ornamentation.

Oreorchis yachangensis (Orchidaceae), a new species from Guangxi, China

Phytotaxa ◽  
2016 ◽  
Vol 265 (2) ◽  
pp. 169
Author(s):  
ZI-BIN ZHANG ◽  
RONG-SHI XIN ◽  
SU-HUAI QIN ◽  
BO-GAO HUANG ◽  
XIN-LIAN WEI ◽  
...  
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
Southern China ◽  
The Other ◽  
National Nature Reserve ◽  
A New Species

Oreorchis yachangensis, a new species of Orchidaceae from Yachang Orchid National Nature Reserve, Guangxi, China, is described and illustrated. The new species most closely resembles Oreorchis patens in having samll flowers, yellow sepals and petals, both the petals and the lip with purple spots, but is distinguished from O. patens and the other species in Oreorchis by having lip oblong, mid-lobe 2-lobed. O. yachangensis is restricted to a wet valley in Yachang Orchid National Nature Reserve, southern China.

Aspidistra micrantha (Asparagaceae, Nolinoideae), a new species from Vietnam with unusually small flowers

Phytotaxa ◽  
2019 ◽  
Vol 422 (3) ◽  
pp. 289-294
Author(s):  
NIKOLAY A. VISLOBOKOV ◽  
MAXIM S. NURALIEV ◽  
ANDREY N. KUZNETSOV ◽  
SVETLANA P. KUZNETSOVA
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
Morphological Features ◽  
Guizhou Province ◽  
Floral Structure ◽  
Southern Vietnam ◽  
A New Species

Aspidistra micrantha is described and illustrated as a new species from southern Vietnam (Quang Nam province, Song Thanh Nature Reserve). The new species has globoid flowers, which are the smallest within the genus Aspidistra. In floral structure, the closest species to A. micrantha is A. urceolata, which is endemic to the Guizhou province of China, but strongly differs from the latter in some morphological features of the rhizome, leaves and position of anthers.

scholarly journals Helicteres binhthuanensis V.S.Dang (Malvaceae, Helicteroideae), a new species from southern Vietnam

PhytoKeys ◽  
2020 ◽  
Vol 166 ◽  
pp. 87-95
Author(s):  
Van-Son Dang ◽  
Minh-Quan Dang ◽  
Nghia-Son Hoang
Keyword(s):  
New Species ◽  
Related Species ◽  
Common Species ◽  
Morphological Characters ◽  
Fruit Shape ◽  
Northern Territory ◽  
Conservation Assessment ◽  
Closely Related Species ◽  
Southern Vietnam ◽  
A New Species

Helicteres binhthuanensis V.S.Dang, sp. nov. from Ham Thuan Bac District, Binh Thuan Province, Vietnam 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 salient characters such as leaf and calyx size, androgynophore length, petal color, and fruit shape. Photographs, a vernacular name, a preliminary conservation assessment, and a table of morphological characters comparing this new species to two closely related species also are provided.

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