scholarly journals Rediscovery of Mazus lanceifolius reveals a new genus and a new species in Mazaceae

PhytoKeys ◽  
2021 ◽  
Vol 171 ◽  
pp. 1-24
Author(s):  
Chun-Lei Xiang ◽  
Hong-Li Pan ◽  
Dao-Zhang Min ◽  
Dai-Gui Zhang ◽  
Fei Zhao ◽  
...  
Keyword(s):  
Dna Sequences ◽  
New Genus ◽  
Phylogenetic Reconstruction ◽  
Molecular Study ◽  
Central China ◽  
Perennial Herb ◽  
Phylogenetic Position ◽  
Basal Clade ◽  
In The Wild ◽  
Plastid Markers

Mazus lanceifolius (Mazaceae) is a perennial herb with opposite leaves and endemic to central China that has not been collected for 130 years. Rediscovery of this enigmatic species in the wild allows for determination of its phylogenetic position within Mazaceae. Phylogenetic reconstruction of Mazaceae based on DNA sequences from four plastid markers (matK, rbcL, rps16 and trnL-trnF) and nuclear ribosome ITS consistently showed that Mazus was not monophyletic. Mazus lanceifolius is in the most basal clade within Mazaceae, as sister to the remaining species of three recognized genera Dodartia, Lancea and Mazus. These results support the separation of M. lanceifolius from Mazus as a new genus, which was established here as Puchiumazus Bo Li, D.G. Zhang & C.L. Xiang. Meanwhile, a collection from Shennongjia Forestry District of Hubei Province, China, misidentified as “M. lanceifolius” in previous molecular study, is here revealed to represent an undescribed species of Mazus, i.e., M. fruticosus Bo Li, D.G. Zhang & C.L. Xiang, sp. nov. Morphologically, Puchiumazus is clearly distinct from the other three genera by having quadrangular to somewhat ribbed stems, and obviously opposite leaves. In addition, we provide a taxonomic key to the four genera of Mazaceae.

scholarly journals Reclassification of Actinobacillus muris as Muribacter muris gen. nov., comb. nov.

2015 ◽  
Vol 65 (Pt_10) ◽  
pp. 3344-3351 ◽  
Author(s):  
Werner Nicklas ◽  
Magne Bisgaard ◽  
Bent Aalbæk ◽  
Peter Kuhnert ◽  
Henrik Christensen
Keyword(s):  
16S Rrna ◽  
Dna Sequences ◽  
Type Strain ◽  
New Genus ◽  
Gene Sequence ◽  
Sequence Similarity ◽  
New Combination ◽  
Phylogenetic Position ◽  
Rrna Gene ◽  
Sequence Comparisons

To reinvestigate the taxonomy of [Actinobacillus] muris, 474 strains, mainly from mice and rats, were characterized by phenotype and 130 strains selected for genotypic characterization by 16S rRNA and partial rpoB gene sequencing. The type strain was further investigated by whole-genome sequencing. Phylogenetic analysis of the DNA sequences showed one monophyletic group with intragroup similarities of 96.7 and 97.2 % for the 16S rRNA and rpoB genes, respectively. The highest 16S rRNA gene sequence similarity to a taxon with a validly published name outside the group was 95.9 %, to the type strain of [Pasteurella] pneumotropica. The closest related taxon based on rpoB sequence comparison was ‘Haemophilus influenzae-murium’, with 88.4 % similarity. A new genus and a new combination, Muribacter muris gen. nov., comb. nov., are proposed based on a distinct phylogenetic position based on 16S rRNA and rpoB gene sequence comparisons, with major divergence from the existing genera of the family Pasteurellaceae. The new genus has the characteristics of [A.] muris with the emendation that acid formation from ( − )-d-mannitol and hydrolysis of aesculin are variable, while the α-glucosidase test is positive. There is no requirement for exogenously supplied NAD (V factor) for the majority of strains investigated; however, one strain was found to require NAD. The major fatty acids of the type strain of Muribacter muris were C14 : 0, C14 : 0 3-OH/iso-C16 : 1 I, C16 : 1ω7c and C16 : 0, which is in line with most genera of the Pasteurellaceae. The type strain of Muribacter muris is CCUG 16938T ( = NCTC 12432T = ATCC 49577T).

Epimedium tianmenshanensis (Berberidaceae), a new species from central China

Phytotaxa ◽  
2015 ◽  
Vol 222 (1) ◽  
pp. 33 ◽  
Author(s):  
Dai-Gui Zhang ◽  
Tao Deng ◽  
Changkyun King ◽  
Jianwen Zhang ◽  
Zelong Nie ◽  
...  
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Intergenic Spacer ◽  
Distinct Group ◽  
Central China ◽  
Phylogenetic Position ◽  
Molecular Evidence ◽  
Floristic Survey ◽  
Nuclear Its ◽  
A New Species

A distinctive, previously undescribed species of Epimedium (Berberidaceae), which we propose naming E. tianmenshanensis, was found during a floristic survey in Hunan, China. It is similar to E. baojingense and E. franchetii, but has smaller flowers and petals with a short, blunt spur. We determined the phylogenetic position of the new species using DNA sequences of nuclear ITS and two chloroplast regions (atpB-rbcL intergenic spacer and matK). Molecular evidence indicates that E. tianmenshanensis occupies a distinct group related to E. baojingense.

Gadoria (Antirrhineae, Plantaginaceae): A new genus, endemic from Sierra de Gádor, Almería, Spain

Phytotaxa ◽  
2017 ◽  
Vol 298 (3) ◽  
pp. 201 ◽  
Author(s):  
JAIME GÜEMES ◽  
JUAN F. MOTA
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
New Genus ◽  
Conservation Status ◽  
Pollen Grains ◽  
Phylogenetic Position ◽  
Ecological Data ◽  
A New Species ◽  
Scanning Electron ◽  
Surprising Discovery

The surprising discovery of a population of a new species of Antirrhineae (Plantaginaceae) has also given rise to the description of a new genus situated in the subtribe Maurandyinae: Gadoria falukei. This is supported by the characteristics of the flower, pollen grains, seeds and capsule, and phylogenetic results based on DNA sequences. The species is endemic from Sierra de Gádor, Almería, Spain. Scanning electron microscopy was used to explore micromorphology of the capsule, indument, and seed and pollen grains ornamentation. Additionally, chromosomal number, preliminary insights on reproductive biology, phylogenetic position within Antirrhineae, ecological data and conservation status of the new species are provided.

scholarly journals First records and a new genus of comb-tailed spiders (Araneae: Hahniidae) from Thailand with comments on the six-eyed species of this family

2020 ◽  
Vol 724 ◽  
Author(s):  
Francisco Andrés Rivera-Quiroz ◽  
Booppa Petcharad ◽  
Jeremy A. Miller
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
New Genus ◽  
New Combination ◽  
Phylogenetic Position ◽  
The Novel ◽  
Novel Genus ◽  
The Family ◽  
Two New Species ◽  
First Time

The family Hahniidae is reported from Thailand for the first time. The genus Hexamatia gen. nov. and two new species, Hexamatia seekhaow gen. et sp. nov. and Hahnia ngai sp. nov., are described and illustrated. DNA sequences are provided for all the species reported here. The phylogenetic position of the novel genus Hexamatia gen. nov. and its relation to Hahnia are discussed. Based on these results, a new combination is proposed for Hexamatia senaria (Zhang, Li & Zheng, 2011) gen. et comb. nov. = Hahnia senaria. Known distribution of the species Hahnia saccata Zhang, Li & Zheng, 2011, originally described from China, is expanded. A brief review and notes on the taxonomy of the six-eyed hahniids are included.

scholarly journals Further study of two Chinese cave spiders (Araneae, Mysmenidae), with description of a new genus

ZooKeys ◽  
2019 ◽  
Vol 870 ◽  
pp. 77-100
Author(s):  
Chengcheng Feng ◽  
Jeremy A. Miller ◽  
Yucheng Lin ◽  
Yunfei Shu
Keyword(s):  
Phylogenetic Analysis ◽  
Dna Sequences ◽  
New Genus ◽  
Western Hemisphere ◽  
Current Paper ◽  
Phylogenetic Position ◽  
Spider Species ◽  
The Creation ◽  
First Time ◽  
New Evidence

The current paper expands knowledge of two Chinese cave spider species originally described in the genus Maymena Gertsch, 1960: M. paquini Miller, Griswold & Yin, 2009 and M. kehen Miller, Griswold & Yin, 2009. With the exception of these two species, the genus Maymena is endemic to the western hemisphere, and new evidence presented here supports the creation of a new genus for the Chinese species, which we name Yamanetagen. nov. The male of Y. kehen is described for the first time. Detailed illustrations of the habitus, male palps and epigyne are provided for these two species, as well as descriptions of their webs. DNA sequences are provided for both Yamaneta species. We build on a previously published phylogenetic analysis of Mysmenidae to assess the phylogenetic position of Yamaneta and its relationship to true Maymena.

Cnidochloa: A New Genus of Grasses from Brazil (Poaceae: Panicoideae: Paniceae)

2020 ◽  
Vol 105 (2) ◽  
pp. 183-194
Author(s):  
Fernando O. Zuloaga ◽  
Sandra S. Aliscioni ◽  
M. Amalia Scataglini
Keyword(s):  
New Genus ◽  
Phylogenetic Position ◽  
South American ◽  
The South ◽  
South American Species ◽  
Molecular Characters

Generic boundaries of the South American species Panicum longipedicellatum Swallen are explored and compared with allied genera of the tribe Paniceae. On the basis of morphological, anatomical, and molecular characters a new genus, Cnidochloa Zuloaga, is proposed. The phylogenetic position of the new genus within the Paniceae is evaluated.

Pseudoditrichum mirabile gen. et sp. nov. (Musci: Pseudoditrichaceae fam. nov.), a unique moss from Great Bear Lake, Northwest Territories

1974 ◽  
Vol 52 (4) ◽  
pp. 701-705 ◽  
Author(s):  
William Campbell Steere ◽  
Zennoske Iwatsuki
Keyword(s):  
Northwest Territories ◽  
New Genus ◽  
The Arctic ◽  
Phylogenetic Position ◽  
New Genus And Species ◽  
Arctic Circle ◽  
New Family ◽  
Bear Lake ◽  
Evolutionary Level

The name Pseudoditrichum mirabile Steere et Iwatsuki is proposed for a minute moss with leafy stem 1-3 mm high and seta 6 mm long; it was collected on calcareous silt near the Sloan River, Great Bear Lake, Northwest Territories, only a few miles south of the Arctic Circle. The gametophytic characters agree well with those of the Ditrichaceae, a relatively primitive family, but the peristome is clearly double, with the inner and outer teeth opposite, which thereby indicates a much more advanced phylogenetic position, perhaps at the evolutionary level of the Funariaceae. As the combination of gametophytic and sporophytic characteristics exhibited by this moss does not occur in any existing family of mosses, it is therefore deemed necessary to create the new family Pseudoditrichaceae for the new genus and species described here.

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