A revision of the genus Digitaria Haller (Paniceae: Poaceae) in Australia.

Brunonia ◽  
1983 ◽  
Vol 6 (2) ◽  
pp. 131 ◽  
Author(s):  
RD Webster
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Alphabetical Order ◽  
Delta System ◽  
Anatomical Characters ◽  
Species Descriptions ◽  
Species Being ◽  
Scanning Electron

The DELTA computer system is used in the presentation of a revision of the genus Digitaria in Australia. Thirty-eight species are recognized, new species being D. imbricata, D. lanceolata, D. minima and D. oraria. Methods used in the production of the computerized taxonomic output are described. Characters used in the keys and descriptions are discussed and where necessary illustrated by scanning electron microscopy and light microscopy. Species are grouped into sections and a key is given to these categories. Section descriptions are listed in alphabetic order. Two keys for the species are given. The first is a standard morphological key and the second is based entirely on vegetative and anatomical characters. Species descriptions are listed in alphabetical order. It is concluded that the DELTA system provides an efficient means of accumulating, storing, editing, manipulating and presenting classical taxonomic data.

Five new Achnanthidiaceae species (Bacillariophyta) from Jiuzhai Valley, Sichuan Province, Southwestern China

Phytotaxa ◽  
2019 ◽  
Vol 405 (3) ◽  
pp. 147
Author(s):  
P. YU ◽  
Q-M. YOU ◽  
W-T. PANG ◽  
Y. CAO ◽  
Q-X. WANG
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Southwest China ◽  
Sichuan Province ◽  
Similar Species ◽  
Separate Species ◽  
Outline Shape ◽  
Scanning Electron

Five new species are described in this study: Achnanthidium jiuzhaienis sp. nov., Achnanthidium epilithica sp. nov., Achnanthidium limosua sp. nov., Achnanthidium subtilissimum sp. nov., and Kolbesia sichuanenis sp. nov. Classification was based on light microscopy (LM) and scanning electron microscopy (SEM). A. jiuzhaienis sp. nov. belongs to the “A. pyrenaicum complex” of the genus Achnanthidium, this classification was based on certain characteristics, such as the possession of transpically-elongated areolae and deflected external distal raphe fissures. A. epilithica sp. nov., A. limosua sp. nov., and A. subtilissimum sp. nov. belong to the “A. minutissimum complex” of the genus Achnanthidium, this classification was based on certain characteristics, such as the possession of straight external distal raphe fissures and round or elliptical areolae. Kolbesia sichuanenis sp. nov. was found to belongs to the Kolbesia genus, based on its elongated areolae and striae comprised of one macroareola. All five species were sufficiently different from other similar species to be considered unique separate species based on their valve outline, shape of the axial and center areas, and density of striae of each taxon. These new species derived from the epilithic and epiphytic collections of four alkaline lakes in Jiuzhai Valley, Sichuan Province, Southwest China.

A new species of Acanthella Schmidt, 1862 (Porifera, Demospongiae, Dictyonellidae) from northeast region, Brazil

Zootaxa ◽  
2019 ◽  
Vol 4555 (2) ◽  
pp. 291
Author(s):  
ELIELTON NASCIMENTO ◽  
THAYNÃ CAVALCANTI ◽  
ULISSES PINHEIRO
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Valid Species ◽  
Taxonomic Identification ◽  
Herbaceous Species ◽  
Northeast Region ◽  
A New Species ◽  
Scanning Electron

Acanthella Schmidt, 1862 species are characterized by choanosomal skeleton of dendritic tracts cored by interwoven sinuously bent strongyles or strongyloxeas and echinated by straight styles, oxeas or anisoxeas (Van Soest et al. 2002). The genus Acanthella comprises 33 valid species, with six known from the Atlantic Ocean (Van Soest et al. 2018). Previously, the only record for Brazil was A. flagelliformis (Van Soest & Stentoft, 1988) (Muricy 2018). Species of the genus include a transition from shrub like ‘Axinellas’ and herbaceous species similar to the genus Suberites Nardo, 1833 (Schmidt 1862; Vosmaer 1912). Due to its heterogeneous complex of species, Acanthella has been confused with other axinellids. Similarities were seen in genera such as Phakellia (Van Soest et al. 2002), which shares spicule complement and comparable choanosomal skeletons. In the present study, we describe a new species of Acanthella from oceanographic expeditions of the northeast region of Brazil. Two specimens of Acanthella sp. nov. were collected by dredging at Ceará and Pernambuco State, Brazil. All specimens were preserved in 92% ethanol and deposited in the Porifera Collections at the Universidade Federal de Pernambuco (UFPEPOR). The taxonomic identification was carried out through analysis of spicules morphologies, using Light Microscopy (LM) and Scanning Electron Microscopy (SEM), following methods described by Hajdu et al. (2011). 

Ranunculus solhanensis (Ranunculaceae), a new species from eastern Turkey

Phytotaxa ◽  
2021 ◽  
Vol 497 (2) ◽  
pp. 157-164
Author(s):  
ALİ SİNAN ◽  
LÜTFİ BEHÇET ◽  
YAKUP YAPAR
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Conservation Status ◽  
Eastern Anatolia ◽  
Ecological Data ◽  
East Anatolia ◽  
A New Species ◽  
Scanning Electron

Ranunculus solhanensis sp. nov. (Ranunculaceae) is described from Bingöl province (Eastern Anatolia) in Turkey. It is related to R. bulbilliferus and R. munzurensis also distributed in east Anatolia. The new species is easily distinguished from its relatives by morphological features of stem, corolla, stamen and achenes. Achenes and pollen characteristics have been assessed by light microscopy and scanning electron microscopy. Distribution, ecological data and IUCN conservation status of the new species are also provided.

Falcaustra sanjuanensis sp. nov. (Nematoda: Kathlaniidae) from Odontophrynus cf. barrioi (Anura: Cycloramphidae) from Argentina

2013 ◽  
Vol 58 (1) ◽  
Author(s):  
Cynthya González ◽  
Eduardo Sanabria ◽  
Lorena Quiroga
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Ventral Side ◽  
Lateral Side ◽  
Triangular Form ◽  
Neotropical Species ◽  
Males And Females ◽  
Scanning Electron

AbstractHere, we describe a new kathlaniid nematode, Falcaustra sanjuanensis sp. nov., from the large intestine of Odontophrynus cf. barrioi (Anura: Cycloramphidae), from San Juan Province, Argentina. The new species belongs to the Falcaustra group that possesses a pseudosucker. It resembles F. andrias in the distribution pattern of caudal papillae (six precloacal, four adcloacal, 12 postcloacal, one unpaired median anterior to the cloaca) but differs from F. andrias in the following characters: the longer size of males and females (11.17–13.45 mm and 10.1–15.5 mm, respectively); the longer size and form of the gubernaculum (0.17–0.23 mm, triangular form); the arrangement of postcloacal papillae (three pairs on the ventral side, two pairs on the lateral side, one pair on the subventral side) and unpaired papilla anterior to the cloaca located on the protuberance. The species description is based on light microscopy and scanning electron microscopy (SEM). Falcaustra sanjuanensis sp. nov. represents the 12th Neotropical species assigned to the genus. Also, we added a key to Neotropical species of Falcaustra.

Another New Thai Argyreia Species (Convolvulaceae)

Phytotaxa ◽  
2015 ◽  
Vol 204 (3) ◽  
pp. 223 ◽  
Author(s):  
GEORGE W. STAPLES ◽  
Paweena Traiperm ◽  
JANENY CHOW
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Leaf Surface ◽  
Microscopic Features ◽  
A New Species ◽  
Scanning Electron

A new species of Argyreia (Convolvulaceae) from Thailand is described and illustrated: A. albiflora. The morphological distinctions of this new species and its relationships with allied species are discussed. Micromorphological evidence is presented using scanning electron microscopy (SEM) and light microscopy (LM) demonstrating that microscopic features of the upper leaf surface are useful in separating species that are similar on a macromorphological level.

Gomphonema qingyiensis sp. nov., a new freshwater species (Bacillariophyceae) from Qingyi River, China

Phytotaxa ◽  
2020 ◽  
Vol 474 (1) ◽  
pp. 40-50
Author(s):  
LIXUAN ZHANG ◽  
PAN YU ◽  
J.P. KOCIOLEK ◽  
WANTING PANG ◽  
QUANXI WANG ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Central Area ◽  
Anhui Province ◽  
Freshwater Species ◽  
Scanning Electron ◽  
Apical Axis

In this study, a new Gomphonema species from Qingyi River, Anhui Province, China, was identified and named Gomphonema qingyiensis sp. nov. We detailed its morphology using light microscopy (LM) and scanning electron microscopy (SEM). The LM and SEM photographs illustrate the size ranges and particular ultrastructure of the new species. The valves of G. qingyiensis are clavate and symmetrical to the apical axis. The headpole is broadly rounded and the footpole is narrowly rounded. The axial area is narrow, linear to linear-lanceolate. The central area is small and rectangular in shape. One stigma is evident. Striae are slightly radiate at the center. Biseriate striae and areolae are clearly evident in the LM images. The new species was compared with G. irroratum, G. zairense, G. dirangense, G. doonensis, G. latistigmata, G stoermeri, G marvanii, G cholnokyi, and G. clavatulum and was found to differ from these species in terms of the valve shape, size, striae density and row number, and central area.

A new species of Aspiculuris Schulz, 1924 (Nematoda, Heteroxynematidae) from the gray-sided vole, Clethrionomys rufocanus (Rodentia, Cricetidae), from Tianjin, China

2012 ◽  
Vol 57 (3) ◽  
Author(s):  
Baochen Liu ◽  
Yanzhen Bu ◽  
Luping Zhang
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Clethrionomys Rufocanus ◽  
A New Species ◽  
Scanning Electron

AbstractAspiculuris tianjinensis sp. nov. recovered from the intestine of Clethrionomys rufocanus from Tianjin, China is described and illustrated using light microscopy and scanning electron microscopy. The new species differs from congeners in the shape of the cervical alae, and the number and arrangement of caudal papillae.

scholarly journals A new species of Aplectana (Nematoda: Cosmocercidae) parasite of Pleurodema nebulosum (Anura: Leptodactylidae) from the Monte desert, Argentina, with a key to Neotropical species of the genus Aplectana

Zootaxa ◽  
2017 ◽  
Vol 4247 (2) ◽  
pp. 121 ◽  
Author(s):  
MAURICIO D. PIÑEIRO GOMEZ ◽  
CYNTHYA E. GONZÁLEZ ◽  
EDUARDO A. SANABRIA
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
New Species ◽  
Light Microscopy ◽  
Caudal Region ◽  
Monte Desert ◽  
Neotropical Species ◽  
A New Species ◽  
Scanning Electron ◽  
Shape And Size

Here we describe a new cosmocercid nematode, Aplectana nebulosa sp. nov., from the small and large intestines of Pleurodema nebulosum (Anura: Leptodactylidae), from the Monte desert of San Juan, Argentina. The new species belongs to the Aplectana group that possesses a gubernaculum and unpaired adcloacal papilla anteriorly to cloaca. It resembles A. membranosa, A. paraelenae and A. travassosi by the presence of four adcloacal papillae, but differs from those species by the following characters: number and arrangement of precloacal papillae; number and arrangement of postcloacal papillae; shape and size of spicules and gubernaculum, and by the presence of lateral alae in caudal region of males. The description of the new species is based on light microscopy and scanning electron microscopy (SEM) and we also provide a key to Neotropical species of Aplectana. 

A new species of alcyonacean octocoral from the Peruvian zoogeographic region

2014 ◽  
Vol 94 (3) ◽  
pp. 493-498 ◽  
Author(s):  
Odalisca Breedy ◽  
Hector M. Guzman
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Species Richness ◽  
New Species ◽  
Light Microscopy ◽  
First Record ◽  
Shallow Waters ◽  
Morphological Studies ◽  
A New Species ◽  
Scanning Electron

The first record of the plexaurid genus Psammogorgia from the shallow waters of Peru is reported here. A new species (Psammogorgia hookeri sp. nov.) is described from Isla San Gallán, Paracas National Reserve. The new species was morphologically analysed using light microscopy and scanning electron microscopy. It is distinguished from the others in the genus by its small size; prominent calyces with wide lips around polyp apertures and without a special type of sclerites, but with a concentration of irregular, thorny spindles and wart-clubs around the calyx rim; coenenchymal sclerites that do not reach more than 0.2 mm long; the occurrence of conspicuous star-like radiates; and the colour of the colony and coenenchymal sclerites, which is coral red. The results increase species richness within a genus that has not been studied for more than a century, and contribute to the establishment of characters for further morphological studies. Additionally, the new species adds value to existing protected areas and to the octocoral biodiversity records for the Peruvian region and the eastern Pacific.

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