scholarly journals Orchidantha anthracina (Lowiaceae), a new species from Vietnam

Author(s):  
H.Đ. Trân ◽  
H.T. Lu'u ◽  
J. Leong-Škorničková

Orchidantha anthracina (Lowiaceae), discovered at the south central coast of Vietnam, is described and illustrated, bringing the total number of species in the family to 26, of which four occur in Vietnam. The notes on distribution, habitat and etymology are given and a preliminary conservation assessment is provided. The species is compared with O. vietnamica, with which it shares flowers of similar size and colours, but from which it is readily distinguished by a narrow and strongly reflexed dorsal sepal and spreading lateral sepals, not supporting the labellum. Notes with additional comparison to all species with a similar arrangement of lateral sepals are also provided.

Phytotaxa ◽  
2021 ◽  
Vol 496 (3) ◽  
pp. 261-268
Author(s):  
VAN THE PHAM ◽  
VAN CANH NGUYEN ◽  
LONG KE PHAN ◽  
THANH THI VIET TRAN ◽  
VAN KHUONG NGUYEN ◽  
...  

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) erect to spreading (vs. recurved) perigone lobes and stamens inserted at the base (vs. middle) of perigone tube. Data on nuclear 5S-NTS region of the new species are provided, aimed to serve as a molecular characterization for comparison with its congeners.


2020 ◽  
Vol 10 (20) ◽  
pp. 7142
Author(s):  
Huu Xuan Nguyen ◽  
An Thinh Nguyen ◽  
Anh Tu Ngo ◽  
Van Tho Phan ◽  
Trong Doi Nguyen ◽  
...  

Flood hazards affect the local economy and the livelihood of residents along the South-Central Coast of Vietnam. Understanding the factors influencing floods’ occurrence potentially contributes to establish mitigation responses to the hazards. This paper deals with an empirical study on applying a combination of the fuzzy analytic hierarchy process (AHP), the fuzzy technique for order of preference by similarity to ideal solution (TOPSIS), and a geographic information system (GIS) to assess flood hazards along the South-Central Coast of Vietnam. Data are collected from focus group discussions (FGDs) with five communal authorities; a questionnaire completed by eight hamlet heads in the Phuoc Thang commune (Binh Dinh province); and documents, reports, and thematic maps provided from official sources. A total of 12 maps of flood factors are prepared. The results show that terrain elevation, creek-bottom terrains, high tide-induced flooding area, and distance to water body are the main factors affecting flood hazards. The An Loi hamlet faces the highest risk for floods, followed by Lac Dien, Luong Binh, and Pho Dong. The map of flood hazards indicates the western part is assessed as low hazard, whereas the eastern part is a very high hazard area. The study findings show that the hybrid approach using GIS-based fuzzy AHP–TOPSIS allows connecting decision makers with the influencing factors of flooding. To mitigate floods, both the Vietnam national government and the Binh Dinh provincial government should integrate natural hazard mitigation into socio-economic development policies.


Zootaxa ◽  
2020 ◽  
Vol 4878 (2) ◽  
pp. 240-266
Author(s):  
MERRICK EKINS ◽  
DIRK ERPENBECK ◽  
LISA GOUDIE ◽  
JOHN N.A. HOOPER

This research presents three new species of carnivorous sponges from the family Cladorhizidae from the Great Australian Bight, South Australia. This research also shows a clear separation within the species currently known as Cladorhiza into those with an arbuscular or tree-like morphology from the Atlantic, to those of differing morphologies and propose three new genera, i.e. Bathytentacular gen. nov., Abyssosdiskos gen. nov. and Nullarbora gen. nov. and the resurrection of an old genus Axoniderma. nov. The three new species described in this paper are Nullarbora heptaxia sp. nov., Abyssocladia oxyasters sp. nov. and Lycopodina hystrix sp. nov. A new species in the family Guitarridae, Guitarra davidconryi sp. nov., a family closely related to the carnivorous sponges is also described in this paper. These new species are the first recorded carnivorous species from South Australia and increase the number of species recorded from around Australia to 25.


Zootaxa ◽  
2003 ◽  
Vol 329 (1) ◽  
pp. 1 ◽  
Author(s):  
GONZALO GIRIBET ◽  
CARLOS E. PRIETO

A new species of the genus Ogovea is described and illustrated, Ogovea cameroonensis n. sp. from Yaoundé. This species considerably enlarges the distribution range of the family Ogoveidae towards the Northeast. The new species, only known from its type locality in Cameroon, is the first described cyphophthalmid for that country. A new diagnosis for the family Ogoveidae is provided and a putative relationship of Ogovea with the South American genus Huitaca is rejected.


Author(s):  
Juliana Alvim ◽  
Vinicius Padula ◽  
Alexandre Dias Pimenta

A new species of the genusOnchidorisis described from the south-western Atlantic, on the coast of Brazil, in the States of Rio de Janeiro and São Paulo. To date, the genusOnchidorisis known almost exclusively from the northern hemisphere, especially the Atlantic coast of Europe and the Mediterranean Sea. The single previous record from the southern hemisphere isOnchidoris maugeansis, described from Australia. This is the first record of the family Onchidorididae from the coast of Brazil.Onchidoris brasiliensissp. nov. is very similar toOnchidoris depressa, from England and the northern coast of Spain, but is distinguished by the presence of a triangular protuberance on the edge of the inner lateral radular tooth and a wide closed branchial circle with tubercles inside. Furthermore, the egg mass of O.brasiliensissp. nov. contains a single row of eggs, whereas that ofO. depressahas multiple rows.Onchidoris brasiliensissp. nov. has lecithotrophic development, the first record of this type of development in the genus. There is a relationship betweenO. brasiliensissp. nov. and the bryozoanParasmittina protecta.


Toxicon ◽  
2013 ◽  
Vol 75 ◽  
pp. 148-159 ◽  
Author(s):  
Bao Nguyen ◽  
Jordi Molgó ◽  
Hung Lamthanh ◽  
Evelyne Benoit ◽  
Thi An Khuc ◽  
...  

Phytotaxa ◽  
2019 ◽  
Vol 416 (1) ◽  
pp. 59-66
Author(s):  
EVA BENAVIDES ◽  
J.R. KUETHE ◽  
A. ORTIZ-ALCARAZ ◽  
J.L. LEÓN DE LA LUZ

Oenothera resicum (Onagraceae) is here described and illustrated. This is the first record of the Onagraceae family in the Revillagigedo Archipelago, Mexican Pacific. The new species, presently known only from Isla Clarión, has characteristic features of species of subsect. Raimannia, from which can be differentiated by its perennial habit, glabrescent large fruits, glabrous sepals, conspicuously dentated leaves, stigma surrounded by the anthers at anthesis, basal rosette absent, and its particular ecological habitat. The species description, ecological information, habitat and conservation assessment are also discussed. Additionally, a key for the species of  subsect. Raimannia distributed in Mexico is provided.


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