scholarly journals Cheniella gen. nov. (Leguminosae: Cercidoideae) from southern China, Indochina and Malesia

Author(s):  
Ruth P. Clark ◽  
Barbara A. Mackinder ◽  
Hannah Banks

For much of the last thirty years, the caesalpinioid genus Bauhinia has been recognised by numerous authors as a broadly circumscribed, ecologically, morphologically and palynologically diverse pantropical taxon, comprising several subgenera. One of these, Bauhinia subg. Phanera has recently been reinstated at generic rank based on a synthesis of morphological and molecular data. Nevertheless, there remains considerable diversity within Phanera. Following a review of palynological and molecular studies of Phanera in conjunction with a careful re-examination of the morphological heterogeneity within the genus, we have found strong evidence that the species of Phanera subsect. Corymbosae are a natural group that warrant generic status. We describe here the genus Cheniella R.Clark & Mackinder gen. nov. to accommodate them. It comprises 10 species and 3 subspecies, one newly described here. Generic characters include leaves that are simple and emarginate or bilobed; flowers with elongate hypanthia which are as long as or much longer than the sepals; pods that are glabrous, compressed, oblong, indehiscent or tardily dehiscent; and with numerous seeds, the seeds bearing an unusually long funicle extending most of the way around their circumference. A further distinctive floral character was found to be a fleshy disc on which the staminodes are mounted. An analysis carried out for this study reveals Cheniella to be characterised by a pollen type that is unique to the genus and previously unknown in the Leguminosae. Species diversity is richest in southern China, the full distribution extending westward to India and south- and eastward through Indochina into Malesia.

Parasite ◽  
2018 ◽  
Vol 25 ◽  
pp. 4 ◽  
Author(s):  
Dagmar Jirsová ◽  
Xuejuan Ding ◽  
Kristína Civáňová ◽  
Eliška Jirounková ◽  
Jana Ilgová ◽  
...  

Paradiplozoon hemiculteri (Ling, 1973), a member of the Diplozoidae, parasitizes the gills of Asian fish. Not only is the type material unavailable for this species, the original description was poor and somewhat conflicting, and adequate molecular data were not available. What is more, the available morphological and molecular data are inconsistent and fluctuate significantly. Here, we present a redescription of P. hemiculteri based on morphological and molecular data from new isolates collected from the type host, the sharpbelly Hemiculter leucisculus (Basilewsky, 1855), captured at the neotype locality (Shaoguan, Guangdong Province, southern China); a neotype for P. hemiculteri was designated from this collection. The length and width of the body, buccal suckers, pharynx, attachment clamps, sickle and the central hook handle were all measured and the shape of the anterior and posterior part of the median plate and anterior and posterior joining sclerites accurately documented. Phylogenetic analyses based on the sequences of the second rDNA internal transcribed spacer (ITS2) indicated that all new samples clustered together and differed clearly from sequences attributed to P. hemiculteri, which are deposited in GenBank. Our results confirm that P. hemiculteri is the only diplozoid that has demonstrably been found on the gills of H. leucisculus to date.


Author(s):  
Li Ding ◽  
Zening Chen ◽  
Chatmongkon Suwannapoom ◽  
Tan Van Nguyen ◽  
Nikolay A. Poyarkov ◽  
...  

An investigation of the taxonomic status of Pareas hamptoni (Hampton's Slug snake) based on morphological and molecular data revealed a new distinct species from the Golden Triangle region (comprising parts of southern China, and adjacent Laos and Thailand). The new species is shown to be a sister species to P. hamptoni but can be separated from the latter by having 3–5 dorsal scale rows at midbody slightly keeled (vs 5–9 scales strongly keeled); a lower number of ventrals, 170–188 (vs 185–195); and a lower number of subcaudals, 67–91 (vs 91–99). The new species is currently known from northwestern Thailand, northern Laos, and the southern part of Yunnan Province in China at elevations of 1,160–2,280 m a.s.l. We suggest that the new species to be considered of Least Concern (LC) in the IUCN‘s Red List categories. Problems of taxonomy and actual distribution of the P. hamptoni complex are briefly discussed; our results show P. hamptoni is now reliably known only from Myanmar and Vietnam, but its occurrence in Yunnan Province of China is likely.


Phytotaxa ◽  
2021 ◽  
Vol 520 (1) ◽  
pp. 87-96
Author(s):  
YAN-LIU CHEN ◽  
XUE-YU PAN ◽  
JIE SONG ◽  
JUN-FENG LIANG

Sphaerosporella microspora is described as a new species based on morphological and molecular data. It is characterized by its sessile apothecia, surface smooth, ectal excipulum composed of cylindrical and angular cells, globose and smooth ascospores, and unmodified paraphyses. A detailed description, photographs of the fruit body and microstructure diagrams are provided.


ZooKeys ◽  
2018 ◽  
Vol 766 ◽  
pp. 51-61 ◽  
Author(s):  
Menglin Wang ◽  
Aimin Shi ◽  
Thierry Bourgoin

A new genusSinonissusgen. n.of the tribe Issini (Issidae, Issinae) with a new speciesSinonissusbrunetussp. n.from Chongqing municipality and Sichuan Province, China are described. Barcode of the species is provided. A molecular analysis combined with morphological characters confirms its placement into the Issini. Distribution of this new genus in the Oriental realm is briefly discussed in regard of other Issinae taxa in China.


2006 ◽  
Vol 31 (3) ◽  
pp. 525-532 ◽  
Author(s):  
Félix Forest ◽  
John C. Manning

Nylandtia (Polygalaceae) is a small South African genus of two or more species distributed mainly in the Cape region. Previous studies based on anatomical, morphological and molecular data have already revealed a close relationship between Nylandtia and Muraltia, a genus of 117 species that is nearly endemic to South Africa. New evidence from molecular studies of family Polygalaceae and genus Muraltia shows that Nylandtia is derived from genus Muraltia, and is nested in Muraltia subgenus Psiloclada. These results have prompted a morphological re-evaluation of the genera Nylandtia and Muraltia, supporting the conclusion that the two species of Nylandtia currently recognized, N. spinosa and N. scoparia, should be included in subgenus Psiloclada within the genus Muraltia. Only one nomenclatural change is necessary: Muraltia spinosa (L.) F. Forest & J. C. Manning, comb. nov.


MycoKeys ◽  
2020 ◽  
Vol 63 ◽  
pp. 163-172
Author(s):  
Xiao-Lan He ◽  
Egon Horak ◽  
Di Wang ◽  
Tai-Hui Li ◽  
Wei-Hong Peng ◽  
...  

Entoloma subgenus Claudopus is widely distributed, yet the taxonomy and systematics of its species are still poorly documented. In the present study, more than forty collections of Claudopus were gathered in China and subsequently analysed, based on morphological and molecular data. The results revealed first a high level of species diversity of Claudopus in China and second, there is a wide ecological range regarding the substrates and the habitats ranging from temperate, tropical to subalpine locations. Based on morphological and molecular evidence, five novel species from China are proposed, viz. E. conchatum, E. flabellatum, E. gregarium, E. pleurotoides and E. reductum. Molecular phylogeny of Entoloma s.l. was also reconstructed, based on 187 representatives of Entoloma s.l. by employing the combined ITS, LSU, mtSSU and RPB2 sequences. Ten monophyletic clades (Claudopus, Leptonia, Nolanea, Cuboid-spored Inocephalus, “Alboleptonia”, Cyanula, Pouzarella, Rhodopolia, Prunuloides and Rusticoides) were recovered, while 13 taxa could not be placed in any defined clades. The results confirmed that Claudopus in a traditional morphological sense is not monophyletic and the Rusticoides-group, previously considered within Claudopus, formed a separate clade; but section Claudopus and relatives of E. undatum belong to a distinctive monophyletic group. Despite some monophyletic groups in Entoloma s.l. being distinctive in both morphology and molecular phylogeny, they were still treated as subgenera of Entoloma s.l. temporarily, because accepting them as genera will make Entoloma s.l. paraphyletic.


MycoKeys ◽  
2019 ◽  
Vol 61 ◽  
pp. 1-26
Author(s):  
Xiao-Lan He ◽  
Egon Horak ◽  
Di Wang ◽  
Tai-Hui Li ◽  
Wei-Hong Peng ◽  
...  

Entoloma subgenus Claudopus is widely distributed, yet the taxonomy and systematics of its species are still poorly documented. In the present study, more than forty collections of Claudopus were gathered in China and subsequently analysed, based on morphological and molecular data. The results revealed first a high level of species diversity of Claudopus in China and second, there is a wide ecological range regarding the substrates and the habitats ranging from temperate, tropical to subalpine locations. Based on morphological and molecular evidence, five novel species from China are proposed, viz. E. conchatum, E. flabellatum, E. gregarium, E. pleurotoides and E. reductum. Molecular phylogeny of Entoloma s.l. was also reconstructed, based on 187 representatives of Entoloma s.l. by employing the combined ITS, LSU, mtSSU and RPB2 sequences. Ten monophyletic clades (Claudopus, Leptonia, Nolanea, Cuboid-spored Inocephalus, “Alboleptonia”, Cyanula, Pouzarella, Rhodopolia, Prunuloides and Rusticoides) were recovered, while 13 taxa could not be placed in any defined clades. The results confirmed that Claudopus in a traditional morphological sense is not monophyletic and the Rusticoides-group, previously considered within Claudopus, formed a separate clade; but section Claudopus and relatives of E. undatum belong to a distinctive monophyletic group. Despite some monophyletic groups in Entoloma s.l. being distinctive in both morphology and molecular phylogeny, they were still treated as subgenera of Entoloma s.l. temporarily, because accepting them as genera will make Entoloma s.l. paraphyletic.


2016 ◽  
Vol 75 (1) ◽  
pp. 60-66
Author(s):  
Candan Aykurt ◽  
İsmail G. Deniz ◽  
Duygu Sari ◽  
Mecit Vural ◽  
Hüseyin Sümbül

Abstract This study evaluates Ornithogalum brevipedicellatum, which was previously accepted as a synonym of O. oligophyllum, as a separate distinct species and discusses the similarities and differences between O. brevipedicellatum and its related species (O. oligophyllum and O. pamphylicum). Similarities and differences among these species were identifi ed by morphological and molecular studies. The leaf morphology and inflorescence of O. brevipedicellatum and O. pamphylicum are similar to each other, and in terms of these features, they show differences from O. oligophyllum. Some diagnostic characteristics are quite different in O. brevipedicellatum and O. pamphylicum, such as the size of tepals, length of fruiting pedicels and style. Morphological data were supported by the results obtained from molecular studies. According to a dendrogram obtained by molecular studies, O. brevipedicellatum and O. pamphylicum are similar. O. oligophyllum is more closely related to O. pyrenaicum used as an out-group. Additionally, the seeds of O. brevipedicellatum were examined with the use of scanning electron microscopy


Phytotaxa ◽  
2020 ◽  
Vol 443 (1) ◽  
pp. 19-37
Author(s):  
TING LI ◽  
TAIHUI LI ◽  
WANGQIU DENG ◽  
BIN SONG ◽  
CHUNYING DENG ◽  
...  

“Dongsun” is an edible species of Phallus commercially cultivated in China. It is morphologically similar to P. impudicus and actually has been misidentified as “P. impudicus” for a long time. In this study the Chinese “Dongsun” is confirmed to be different from the typical P. impudicus from Europe based on morphological and phylogenetic comparisons, and therefore is formally proposed as P. dongsun, a species new to science. At the same time, another new species of Phallus was also discovered from southern China. It is named as P. lutescens, and is morphologically characterized by its indusium colour that turns from white or cream white to yellow or yellow-orange when mature. Both new species are presented with detailed morphological descriptions, photographs of basidiomata and images of microscopic structures, and are compared with other related Phallus taxa based on morphological and molecular data. A key to the Phallus species without an indusium and a key to the Phallus species with a coloured indusium are also presented at the end of the text.


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