Echinostelium microsporum (Echinosteliaceae, Myxomycetes), a new epiphytic corticolous species from Russia  

Phytotaxa ◽  
2019 ◽  
Vol 416 (1) ◽  
pp. 67-72 ◽  
Author(s):  
ANASTASIA V. VLASENKO ◽  
NINA V. FILIPPOVA ◽  
VYACHESLAV A. VLASENKO
Keyword(s):  
New Species ◽  
Type Locality ◽  
Uniform Thickness ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Northern Asia ◽  
Holotype Specimen ◽  
A New Species ◽  
Khanty Mansi Autonomous ◽  
Scanning Electron

A new species, Echinostelium microsporum, is described and illustrated herein. Samples of this species were collected in the Khanty-Mansi Autonomous Area—Yugra, Russia. It clearly differs from the previously known species in form and structure of columella, number of capillitial threads, their development and branching, and size of spores. Columella of E. microsporum is sponge-like and with deep dark-brown indentations. Its capillitium always extend from three areas at the side of the columella. Capillitial threads are long and always numbering 3, dichotomous and branching into two parts at the ends. Spore-like body is absent. Spores are small, warted and with walls of uniform thickness. We present here a scanning electron micrograph study of E. microsporum and an updated identification key for species of the genus Echinostelium worldwide, which currently includes 16 taxa. A holotype specimen of E. microsporum is deposited in M.G. Popov Herbarium (NSK). It is the second new species for the genus discovered in Russia, with type locality in Siberia, Northern Asia.

Echinostelium novozhilovii (Echinosteliaceae, Myxomycetes), a new species from Northern Asia

Phytotaxa ◽  
2018 ◽  
Vol 367 (1) ◽  
pp. 91 ◽  
Author(s):  
ANASTASIA VLADIMIROVNA VLASENKO ◽  
NINA V. FILIPPOVA ◽  
VYACHESLAV ALEKSANDROVICH VLASENKO
Keyword(s):  
New Species ◽  
Morphological Characters ◽  
Identification Key ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Northern Asia ◽  
Holotype Specimen ◽  
A New Species ◽  
Scanning Electron

A new Echinostelium novozhilovii species from Northern Asia is described and illustrated. The species was collected in the Khanty-Mansiysk Autonomous Okrug-Yugra, Russia. This new species clearly differs from the previously known species by several morphological characters. Its sporocarps have very large dimensions of 700–2500 µm tall, which exceed the dimensions of E. minutum (up to 500 µm tall). Its spores are the biggest among all known species of the Echinostelium genus with 20–25(30) µm in diameter. Its columella consists of several spore-like bodies. We present a scanning electron micrograph study of E. novozhilovii and an updated identification key for species of the Echinostelium genus worldwide, which currently includes 15 taxa. Holotype specimen of E. novozhilovii is deposited in NSK. It is the first new species for the Echinostelium genus since 1997.

scholarly journals A new species, Stemonitis sichuanensis, and a newly recorded species, Stemonitis marjana (Myxogastria) from China

Phytotaxa ◽  
2016 ◽  
Vol 258 (2) ◽  
pp. 195 ◽  
Author(s):  
ZHANG BO ◽  
LI YU
Keyword(s):  
New Species ◽  
New Record ◽  
Sichuan Province ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Natural Reserve ◽  
A New Species ◽  
Scanning Electron

A new species, Stemonitis sichuanensis, collected in Gexigou National Natural Reserve, Sichuan province, China, is described herein. This new species has a columella that usually ends in an ovoid to triangular expansion at the apex of the sporotheca and small spores (about 6–7 μm in diam.). We present a scanning electron micrograph study of S. sichuanensis and a key to the species in the genus Stemonitis. Holotype specimens of S. sichuanensis are deposited in the Herbarium of the Mycological Institute of Jilin Agricultural University (HMJAU), Changchun, China. We also report a new record of another species of Stemonitis, S. marjana Y. Yamam., in this paper, specimens of which are also deposited in the HMJAU.

A new species and two new records of Stemonitidaceae from China

Phytotaxa ◽  
2016 ◽  
Vol 267 (2) ◽  
pp. 151
Author(s):  
ZHANG BO ◽  
LI YU
Keyword(s):  
New Species ◽  
New Records ◽  
Henan Province ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
A New Species ◽  
Scanning Electron

A new species of Stemonitidaceae, Comatricha clavicolumella, collected in Jigong Mountain Scenic Area, Henan Province, China, is described. C. clavicolumella has a columella that usually ends in a clavate expansion at the apex of the sporocysts, and has smaller spores than usual for the genus (about 5–5.5 μm in diam.). Two newly recorded species from China, C. ellae and C. reticulospora, are also described. We present a scanning electron micrograph study of the species.

Identification of a new species, Trichia macrospora, and a newly recorded species, T. flavicoma (Myxogastria), in China

Phytotaxa ◽  
2016 ◽  
Vol 258 (2) ◽  
pp. 179
Author(s):  
ZHANG BO ◽  
LI YU
Keyword(s):  
New Species ◽  
New Record ◽  
Jiangxi Province ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
A New Species ◽  
Scanning Electron

A new species, Trichia macrospora, collected in Jiangxi province, China, is described herein. Trichia macrospora has larger (about 17–19 μm in diam.) densely verrucose spores than other described species of Trichia, with abundant long, slim spinulations. We present a scanning electron micrograph study of the species and a key to the genera of the species. Holotype specimens of T. macrospora are deposited in the herbarium of the Mycological Institute of Jilin Agricultural University (HMJAU), Changchun, China. We also report a new record of a species of Trichia, T. flavicoma (Lister) Ing, in this paper, specimens of which are deposited in the HMJAU.

Palaemonella dijonesae sp. nov. (Crustacea: Decapoda: Pontoniinae) from Western Australia

Zootaxa ◽  
2010 ◽  
Vol 2372 (1) ◽  
pp. 151-156 ◽  
Author(s):  
A. J. BRUCE
Keyword(s):  
New Species ◽  
Western Australia ◽  
Type Locality ◽  
Sagami Bay ◽  
Australian Museum ◽  
Holotype Specimen ◽  
Single Figure ◽  
Western Australian ◽  
A New Species

A recent publication by Bruce (2008a) reported the presence of Palaemonella spinulata Yokoya, 1936 in the Dampier Archipelago, Western Australia. This report noted that “The holotype specimen from Misaki, Japan, is considered to be lost (Holthuis 1952; Bruce 1970; Okuno pers. comm.). The designation of a neotype would appear useful but one from Japanese or nearby waters would be more appropriate than one of the present specimens”. The brief description provided by Yokoya (1936), with only a single figure showing the whole specimen, antennule, antenna, mandible, second maxilliped and posterior telson, is inadequate for comparison with other species of the genus. This deficiency has now been rectified by Hayashi (2009) who has provided a detailed and well illustrated description of P. spinulata and designated a neotype from Sagami Bay, near Misaki, the type locality. This re-description immediately indicated that the Western Australian specimens were not conspecific and they are now described as a new species. The specimens are held in the collections of the Western Australian Museum, Perth.

scholarly journals A new epiphytic species, Symphytocarpus macrosporus (Myxomycetes) from Western Siberia, Russia

Karstenia ◽  
2021 ◽  
pp. 393-400
Author(s):  
Anastasia Vlasenko ◽  
Nina Filippova ◽  
Vyacheslav Vlasenko
Keyword(s):  
New Species ◽  
Western Siberia ◽  
Picea Obovata ◽  
Spore Size ◽  
Holotype Specimen ◽  
A New Species ◽  
Khanty Mansi Autonomous ◽  
Molecular Characters ◽  
Made In

A new species <em>Symphytocarpus macrosporus</em> is described based on collections made in the Khanty- Mansi Autonomous Area – Yugra, Russia. Thirty- two specimens of the new species were isolated from moist chambers with <em>Picea obovata</em> and <em>Abies siberica</em> bark. The new species is characterized by the presence of pseudoaethalia, without cortex, with peridium remaining as fragments. This new species clearly differs from previously described species of the genus by both morphological and molecular characters. It has large spores, (14)15–17(18) μm diam. with irregular ornamentation of large warts. Such a spore size seems to be the largest for the genus. The holotype specimen of <em>Symphytocarpus macrosporus</em> is stored in the M.G. Popov Herbarium (NSK), Novosibirsk, Russia. It is the first new species described within the genus <em>Symphytocarpus</em> since 1984.

Analytical and High-Resolution EM Study of Crystalline Phases formed at Metal-Ceramic Interface

1990 ◽  
Vol 48 (2) ◽  
pp. 426-427
Author(s):  
N. Merk ◽  
A. P. Tomsia ◽  
G. Thomas
Keyword(s):  
Cross Section ◽  
Dissimilar Materials ◽  
Ceramic Materials ◽  
Electron Micrograph ◽  
Scanning Electron Micrograph ◽  
Structural Applications ◽  
Metal Ceramic ◽  
The Subject ◽  
Ceramic Compounds ◽  
Scanning Electron

A recent development of new ceramic materials for structural applications involves the joining of ceramic compounds to metals. Due to the wetting problem, an interlayer material (brazing alloy) is generally used to achieve the bonding. The nature of the interfaces between such dissimilar materials is the subject of intensive studies and is of utmost importance to obtain a controlled microstructure at the discontinuities to satisfy the demanding properties for engineering applications . The brazing alloy is generally ductile and hence, does not readily fracture. It must also wett the ceramic with similar thermal expansion coefficient to avoid large stresses at joints. In the present work we study mullite-molybdenum composites using a brazing alloy for the weldment.A scanning electron micrograph from the cross section of the joining sequence studied here is presented in Fig. 1.

A new species of Cribraria (Myxomycetes) from Australia

2018 ◽  
Vol 52 (2) ◽  
pp. 379-385 ◽  
Author(s):  
S. L. Stephenson ◽  
Yu. K. Novozhilov ◽  
P. Wellman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Lemon Yellow ◽  
Moist Chamber ◽  
Light Yellow ◽  
Dark Violet ◽  
The Stability ◽  
A New Species ◽  
Scanning Electron

A new species of Cribraria, described herein as C. bicolor, appeared in moist chamber cultures on samples of the bark of Eucalyptus sp. collected at two localities in Australia. The morphology of representative specimens was examined by light and scanning electron microscopy, and micrographs of relevant morphological details of sporocarps and spores are provided. The species has a number of distinct and unique morphological features, including a glossy bright-violet globose sporotheca and a two-colored long stalk which is bright-red over the lower one-third and light yellow or lemon-yellow over the upper two-thirds. The combination of these characteristics as well as a shallow calyculus which is dark-violet when viewed under a dissecting microscope and bright red in transmitted light when mounted in lactophenol makes C. bicolor a well-defined morphospecies when compared to all other species of Cribraria. The stability of the taxonomic characters of the species was confirmed by an examination of a number of specimens.

A new species of Phrynus Lamarck, 1801 (Arachnida: Amblypygi),  from Trinidad and Tobago, and Venezuela, with a redescription of Phrynus pulchripes (Pocock, 1894)

Zootaxa ◽  
2017 ◽  
Vol 4254 (3) ◽  
pp. 357 ◽  
Author(s):  
DANIEL CHIRIVI JOYA
Keyword(s):  
New Species ◽  
Trinidad And Tobago ◽  
Type Locality ◽  
Similar Species ◽  
The Moment ◽  
A New Species

We present the description of Phrynus calypso sp. nov. from Trinidad and Tobago, and Venezuela This species is very similar to Phrynus pulchripes (Pocock), however after examining Colombian specimens of P. pulchripes (ca. type locality), many differences were found. Characters commonly used in diagnosis of Phrynus species are variable and make identification difficult. Differences in a few structures, like pedipalpal spines, could not be enough to provide a useful diagnosis.  It is necessary to account for variation of similar species in conjunction, and select non overlapping groups of characters. Observations in the variation in both species are presented, pointing out sources of confusion, and suggesting alternative characters to support diagnoses. At the moment, details about variation in many species in Phrynus, like that of P. pulchripes, are poorly known, and for this reason a redescription is provided. 

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