scholarly journals New species and records of Chapsa (Graphidaceae) in China

MycoKeys ◽  
2021 ◽  
Vol 85 ◽  
pp. 73-85
Author(s):  
Ming-Zhu Dou ◽  
Min Li ◽  
Ze-Feng Jia

We studied the genus Chapsa in China based on morphological characteristics, chemical traits and molecular phylogenetic analysis. One species new to science (C. murioelongata M.Z. Dou & M. Li) and two records new to China were found (C. wolseleyana Weerakoon, Lumbsch & Lücking and C. niveocarpa Mangold). Chapsa murioelongatasp. nov. is characterised by its lobed thalline margin, orange discs with white pruina, clear hymenium, and submuriform and long ascospores. Chapsa wolseleyana was recombined into Astrochapsa based on phenotypic traits. Sequences of this species are for the first time reported here and phylogenetic analyses of three loci (mtSSU, ITS and nuLSU) supported the position of this species within Chapsa. A key for the Chapsa species known in China is provided.

MycoKeys ◽  
2020 ◽  
Vol 72 ◽  
pp. 1-16
Author(s):  
Ping Du ◽  
Wu Fang ◽  
Xue-Mei Tian

In this study, taxonomic and phylogenetic analyses of Junghuhnia were performed. Three new species were characterised according to morphological characteristics and molecular phylogenetic analysis using ITS and nLSU sequences. They are J. austrosinensissp. nov., J. nandinaesp. nov. and J. subcollabenssp. nov.Junghuhnia austrosinensis is characterised by resupinate, thin basidiomata with white to buff-yellow hymenophore, small pores (9–11 per mm), clamped generative hyphae possessing hymenial cystidia, ellipsoid basidiospores (2.5–3 × 1.7–2 µm) and growth on fallen bamboo or angiosperm branch. Junghuhnia nandinae is characterised by resupinate basidiomata with pink to salmon pores and a distinct white margin, clamp generative hyphae, interwoven tramal hyphae, ellipsoid basidiospores measuring 2.6–3.2 × 1.8–2 µm and growth on Nandina domestica. Junghuhnia subcollabens is characterised by resupinate basidiomata with pale salmon to brownish vinaceous hymenophore, small pores (10–12 per mm), generative hyphae with simple septa and clamp connections, interwoven tramal hyphae, lunate basidiospores measuring 2.9–3.4 × 1.6–1.8 µm and thriving on rotten wood of angiosperms.


Phytotaxa ◽  
2021 ◽  
Vol 514 (2) ◽  
pp. 158-166
Author(s):  
XIAO-LING LI ◽  
HAI-YING YU ◽  
XI LUO ◽  
HAO WU ◽  
CHUN-YAN ZHAO ◽  
...  

Thirty-seven Phyllachora specimens were collected in China and examined for morphological characteristics. A molecular phylogenetic analysis based on a combined sequence dataset of ITS and LSU was also undertaken. Phyllachora cephalostachyi sp. nov. on Cephalostachyum pergracile is described based on its distinct phylogenetic relationships and a comparison of its morphological characteristics with known Phyllachora species on bamboo. Our results indicate a high species diversity of Phyllachora on bamboo in China. A full description and colour photographs of micro-characters are provided for the new species. A phylogenetic tree to show placement of the new species, and a table to compare morphology of the Phyllachora species reported on bamboo are also provided.


Phytotaxa ◽  
2014 ◽  
Vol 170 (4) ◽  
pp. 259 ◽  
Author(s):  
Tao Deng ◽  
Jian Wen Zhang ◽  
XIN XIN ZHU ◽  
Dai Gui Zhang ◽  
Zelong Nie ◽  
...  

Youngia zhengyiana, a new species of Youngia sect. Mesomeris (Asteraceae: Crepidinae) from Guizhou province of south China is described and illustrated. The placement of this species within Youngia is assessed based on a molecular phylogenetic analysis of the nuclear ribosomal ITS and on morphological comparisons with related species. The new species can be easily distinguished by morphology from the only species known to possess 5 florets, Y. szechuanica. The infrageneric classification and the recently debated circumscription of Youngia are discussed in the light of the nrITS phylogeny, which includes several species for the first time. Pseudoyoungia is confirmed as a congener of Youngia. The redefined Youngia is still non-monophyletic with Lapsanastrum nested within it.


ZooKeys ◽  
2021 ◽  
Vol 1021 ◽  
pp. 19-35
Author(s):  
Liang-Jing Yang ◽  
Zhi-Min Chang ◽  
Lin Yang ◽  
Xiang-Sheng Chen

A new species Euxaldar daweishanensis Yang, Chang & Chen, sp. nov. is described and illustrated from southwestern China. The female genitalia of the genus Euxaldar is described and presented for the first time. A checklist and key to the known species of the genus are provided. A revised molecular phylogenetic analysis of the family Issidae based on combined partial sequences of 18S, 28S, COI, and Cytb is provided using both Maximum likelihood and Bayesian inference analyses.


Phytotaxa ◽  
2020 ◽  
Vol 447 (3) ◽  
pp. 176-184
Author(s):  
CHUN-YU ZOU ◽  
SHI-YONG MENG ◽  
ZHAO-CEN LU ◽  
YAN LIU

Sedum nanlingense (Crassulaceae), a new species from Guangxi, is described and illustrated here. We analyzed its morphological characteristics, which are largely similar to S. onychopetalum and S. kiangnanense. However, the morphology of this new species differs from other taxa in some important ways, including its 3-merous flowers, which contain six stamens and three carpels. Molecular phylogenetic analysis based on nuclear DNA internal transcribed spacer (ITS) sequences resolved S. nanlingense as a distinct clade, lending further support to its classification. Phylogenetic analysis showed that this new species is closely related to S. onychopetalum and S. kiangnanense.


Phytotaxa ◽  
2016 ◽  
Vol 257 (2) ◽  
pp. 99 ◽  
Author(s):  
Jun-Liang Zhou ◽  
Sheng-Yu Su ◽  
Hong-Yan Su ◽  
Bo Wang ◽  
Philippe Callac ◽  
...  

Specimens of Agaricus sections Xanthodermatei and Hondenses were collected in Tibet and the surrounding areas. All specimens were morphologically described and subjected to molecular phylogenetic analysis of the ITS and combined ITS, LSU and tef-1α sequence data using Bayesian and Maximum Likelihood methods. Twelve species were identified in this study, eleven of which were new species and one of which was identified in China for the first time. All of the identified species are described and illustrated with photo plates.


Phytotaxa ◽  
2015 ◽  
Vol 218 (2) ◽  
pp. 156
Author(s):  
Shang Hui ◽  
Ma Qi-Xia ◽  
Yan Yue-Hong

Dryopteris shiakeana, a new species of Dryopteridaceae from Danxia landform in Danxiashan National Park, Guangdong, China, is described and illustrated. This species exhibits morphological characteristics similar to D. dehuaensis but differs in terms of dense scales on the rachis of laminae and pinnae, dissected pinnules, more prominent veinlets, reddish-brown scales on stipes, and toothed margin. Based on results of molecular phylogenetic analysis of the trnL-F sequence, our conclusion is that D. shiakeana is most closely related to D. dehuaensis.


Phytotaxa ◽  
2017 ◽  
Vol 329 (3) ◽  
pp. 277 ◽  
Author(s):  
ANDREW S. URQUHART ◽  
PAULINE M. L. COULON ◽  
ALEXANDER IDNURM

Pilaira australis, a new species of fungus in the coprophilous genus Pilaira, was isolated from emu (Dromaius novaehollandiae) faeces and is described. Morphologically, the species resembles other species in the genus, particularly P. moreaui, except differs in its unique combination of sporangiophore height and sporangiospore length. Molecular phylogenetic analysis indicates that P. australis is distinct from other species in the genus with two regions, the internal transcribed spacers (ITS) and a fragment of the pyrG gene, showing 91% and 90% identity to the nearest species, respectively. Ultrastructure features and carbon utilisation were determined for P. australis, and may provide characteristics for species identification in this genus.


Phytotaxa ◽  
2021 ◽  
Vol 512 (3) ◽  
Author(s):  
YU-YANG ZHOU ◽  
YUN-HAO SI ◽  
ZHEN ZHANG ◽  
QIANG WANG ◽  
YAN YU

Codonopsis atriplicifolia (Campanulaceae) from western Sichuan, China, is described here as a new species, which is similar to C. subscaposa in a number of characters. The results of molecular phylogenetic analysis of 25 species of Codonopsis based on chloroplast DNA fragments (matK, petD with petB-petD, rbcL) show that C. atriplicifolia is closely related to C. farreri. In morphology, the new species is distinctly different from the allied species by its linear-lanceolate leaves with subentire to pinnatipartite margins.


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