Ottelia guanyangensis (Hydrocharitaceae), a new species from southwestern China

Phytotaxa ◽  
2018 ◽  
Vol 361 (3) ◽  
pp. 294 ◽  
Author(s):  
ZHI-ZHONG LI ◽  
KUO LIAO ◽  
CHUN-YU ZOU ◽  
YAN LIU ◽  
GUANG-WAN HU ◽  
...  

Ottelia guanyangensis (Hydrocharitaceae), a new species from southwestern China, is described and illustrated. This aquatic plant is a perennial, submersed herb with bisexual flowers and a hexagonal-cylindric fruit. It is related to O. acuminata var. songmingensis and O. balansae but differs from these two taxa by its bisexual flowers, spathe with 2–5 flowers, trinerved leaf with obvious cross veins, and a winged, hexagonal-cylindric fruit. Molecular phylogenetic analysis based on nuclear DNA internal transcribed spacer (ITS) sequences and three chloroplast DNA sequences (rbcL, trnK5’ intron and trnS-trnG) resolves O. guanyangensis as a distinct clade, which further justifies its recognition as a new species.

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 ◽  
2020 ◽  
Vol 452 (4) ◽  
pp. 268-277
Author(s):  
MUHAMMAD ALI ◽  
JUNAID KHAN ◽  
HIRA BASHIR ◽  
ABDUL REHMAN NIAZI ◽  
HASSAN SHER ◽  
...  

Infundibulicybe macrospora, a new species, is described and illustrated from the Himalayan moist temperate forests of Pakistan. The new species can be differentiated from close allies by its reddish orange to light orange pileus, whitish lamellae and stipe, and larger and broader basidiospores. The new species is also supported by molecular phylogenetic analysis inferred from internal transcribed spacer (ITS) region.


Phytotaxa ◽  
2017 ◽  
Vol 306 (2) ◽  
pp. 135 ◽  
Author(s):  
SANA JABEEN ◽  
MUNAZZA KIRAN ◽  
SADIQ ULLAH ◽  
ANDREW W. WILSON ◽  
GREGORY M. MUELLER ◽  
...  

A new species, Amanita glarea, is described and illustrated from Pakistan. Molecular phylogenetic data derived from internal transcribed spacer (ITS) and nuclear ribosomal large subunit (LSU) regions along with morphological characters make it distinct from other currently known Amanita species. Amanita glarea is characterized by a grayish brown, slightly umbonate, pileus having universal veil remnants and striate margins, a long ringless stipe with a saccate volva bearing yellowish brown patches on the verrucose surface, inamyloid globose to subglobose basidiospores, and a filamentous pileipellis with some inflated round to elongated cells. Phylogenetic analysis of nuclear ribosomal ITS and LSU nucleotide sequences resolve A. glarea with other taxa in Amanita section Vaginatae.


ZooKeys ◽  
2020 ◽  
Vol 943 ◽  
pp. 119-144 ◽  
Author(s):  
Ning Xu ◽  
Shi-Ze Li ◽  
Jing Liu ◽  
Gang Wei ◽  
Bin Wang

A new species of the genus Megophrys is described from Guizhou Province, China. Molecular phylogenetic analyses based on mitochondrial DNA and nuclear DNA sequences all strongly supported the new species as an independent clade sister to M. minor and M. jiangi. The new species could be distinguished from its congeners by a combination of the following characters: body size moderate (SVL 43.4–44.1 mm in males, and 44.8–49.8 mm in females; vomerine teeth absent; tongue not notched behind; a small horn-like tubercle at the edge of each upper eyelid; tympanum distinctly visible, rounded; two metacarpal tubercles on palm; relative finger lengths II < I < V < III; toes without webbing; heels overlapping when thighs are positioned at right angles to the body; tibiotarsal articulation reaching the level between tympanum and eye when leg stretched forward; in breeding males, an internal single subgular vocal sac in male, and the nuptial pads with black spines on dorsal surface of bases of the first two fingers.


Phytotaxa ◽  
2018 ◽  
Vol 348 (4) ◽  
pp. 279 ◽  
Author(s):  
ZIA ULLAH ◽  
SANA JABEEN ◽  
HABIB AHMAD ◽  
ABDUL NASIR KHALID

Inocybe pakistanensis is described and illustrated as a new species based on morphological characters and molecular phylogenetic analysis of nuclear ribosomal DNA including the internal transcribed spacer (ITS) regions along with larger subunit (LSU). The distinctive basidiomata have a highly rimose and fibrillose golden brown pileus with a reddish brown, prominent umbo; ellipsoid to amygdaliform, slightly phasoeliform smooth basidiospores; and clamped septa in all the tissues. Molecular phylogenetic analysis supports the placement of I. pakistanensis in section Rimosae s. str.


Phytotaxa ◽  
2016 ◽  
Vol 260 (1) ◽  
pp. 47 ◽  
Author(s):  
JIE SONG ◽  
JIA-HUI XING ◽  
CONY DECOCK ◽  
XIAO-LAN HE ◽  
BAO-KAI CUI

The phylogeny of Amauroderma and related genera were studied using DNA sequences from the internal transcribed spacer (ITS) and 28S nuclear ribosomal RNA gene regions. Amauroderma concentricum sp. nov. is described. The species is characterized by the yellowish brown to reddish brown pileal surface with concentric zones, a white pore surface unchanged when bruised, single to multiple stipes, small pores (4–5 per mm), and subglobose to globose and double-walled basidiospores, 8–9.2 × 7.2–8 µm. The phylogenetic analysis presented here confirmed that Amauroderma as traditionally accepted is not monophyletic.


Botany ◽  
2017 ◽  
Vol 95 (6) ◽  
pp. 567-577 ◽  
Author(s):  
Pimwadee Pornpongrungrueng ◽  
John A.N. Parnell ◽  
Trevor R. Hodkinson ◽  
Pranom Chantaranothai

Phyllanthus kaweesakii Pornp., Chantar. & J.Parn. sp. nov. is newly described from the limestone mountain ridges in the northeast of Thailand. Comparison of morphology, anatomy, pollen morphology, and DNA sequences of this species with the most similar existing species P. mirabilis Müll.Arg. was undertaken. The results indicated that the two taxa are different in morphology, especially habit, stem base, and inflorescence, but that their pollen morphology and anatomy are similar. The molecular phylogenetic analysis, based on sequences of the plastid matK and nuclear ribosomal ITS regions, supported separation of the two taxa. This new species is described and illustrated, and its conservation status is discussed.


Nematology ◽  
2020 ◽  
Vol 22 (10) ◽  
pp. 1131-1140
Author(s):  
Jianfeng Gu ◽  
Munawar Maria ◽  
Yiwu Fang ◽  
Majid Pedram

Summary During quarantine inspections, a new species of Hoplotylus was detected from the rhizosphere of the Japanese maple, Acer palmatum, imported into China from Japan. Hoplotylus japonicus n. sp. is characterised by a stout 431-602 μm long body, well-developed 20.0-24.5 μm long stylet with tulip-shaped knobs having rounded sides in lateral view and a rounded anterior margin, excretory pore located slightly posterior to the hemizonid, usually empty, spermatheca, conical tail with a spike-like projection, which is distally smooth on the dorsal side, and males not found. It was morphologically compared with four currently known species of the genus, viz., H. femina, H. montanus, H. silvaticus, and H. sjacobi. In molecular phylogenetic analyses using 18S, 28S and internal transcribed spacer (ITS) ribosomal DNA sequences, the new species formed a clade with the only currently sequenced species of the genus, H. femina, in all phylogenies. This is the second species of the genus characterised by molecular data and the second species recovered from Japan.


PhytoKeys ◽  
2020 ◽  
Vol 167 ◽  
pp. 45-56
Author(s):  
Zhun Xu ◽  
Jing Tian ◽  
Solo Hery Jean Victor Rapanarivo ◽  
Rokiman Letsara ◽  
Rivontsoa A. Rakotonasolo ◽  
...  

Hydrostachys flabellifera, a new species of Hydrostachyaceae found in a stream in Manandriana, Madagascar, is described and illustrated herein. It is similar to H. verruculosa and H. laciniata in morphology, but can be distinguished from them by its leaves with sparsely arranged, flabelliform and palmately parted emergences, obvious rachis and the pattern of segments arranged on the male bracts. Molecular phylogenetic analysis of the nuclear ribosomal internal transcribed spacer (ITS) dataset provides a robust support for it as a new species as well.


Zootaxa ◽  
2010 ◽  
Vol 2650 (1) ◽  
pp. 19 ◽  
Author(s):  
BRYAN L. STUART ◽  
SOMPHOUTHONE PHIMMACHAK ◽  
NIANE SIVONGXAY ◽  
WILLIAM G. ROBICHAUD

A new species in the morphologically conservative Tylototriton asperrimus group is described from Khammouan Province, Laos. Molecular phylogenetic analysis of mitochondrial DNA confirms its placement in the T. asperrimus group. Tylototriton notialis sp. nov. is diagnosable in mitochondrial DNA, nuclear DNA, and morphology from its congeners. The new species represents the first record of the genus from Laos, and is the southernmost known member of the T. asperrimus group.


Sign in / Sign up

Export Citation Format

Share Document