Anatomy of Culcita macrocarpa

1968 ◽  
Vol 46 (1) ◽  
pp. 43-46 ◽  
Author(s):  
U. Sen
Keyword(s):  
Vascular Bundle ◽  
Subsidiary Cell ◽  
Taxonomic Position ◽  
Transverse Orientation ◽  
Diagnostic Features ◽  
Anatomical Characteristics ◽  
Sieve Cells ◽  
Close Relationship ◽  
First Time ◽  
Silica Crystals

The anatomy of Culcita macrocarpa Presl., the taxonomic position of which has been in dispute, is described in detail for the first time. The stem is solenostelic. Important diagnostic features are the presence of cubical cells with silica crystals in both cortex and pith, and a transverse orientation of some of the sieve cells. Each petiole has a U-shaped vascular bundle. Stomata are of the syndetocheilic type with one subsidiary cell. The indusium has abaxial and adaxial lips which are structurally dissimilar. Anatomical characteristics of the species justify its inclusion in the Cyatheaceae (sensu Holttum and Sen, 1961), and show close relationship with Thyrsopteris.

scholarly journals The utility of Bambusoideae (Poaceae, Poales) leaf blade anatomy for identification and systematics

2016 ◽  
Vol 76 (3) ◽  
pp. 708-717 ◽  
Author(s):  
T. D. Leandro ◽  
R. T. Shirasuna ◽  
T. S. Filgueiras ◽  
V. L. Scatena
Keyword(s):  
Vascular Bundle ◽  
Leaf Blade ◽  
Sympatric Species ◽  
Subsidiary Cell ◽  
Vascular Bundles ◽  
Diagnostic Features ◽  
Bulliform Cells ◽  
Herbaceous Bamboos ◽  
Stomatal Apparatus ◽  
Woody Bamboos

Abstract Bambusoideae is a diverse subfamily that includes herbaceous (Olyreae) and woody (Arundinarieae and Bambuseae) bamboos. Species within Bambusae are particularly difficult to identify due to their monocarpic lifecycle and the often long durations between mass flowering events; whereas the herbaceous bamboos are pluricarpic, but often are found with no reproductive structures. The leaf blade anatomy of 16 sympatric species of native Brazilian bamboos (Olyreae and Bambuseae) from the Atlantic Rainforest was studied in order to detect useful features for their identification. All the studied species share the following features: epidermis with a single stratum of cells; adaxial bulliform cells; mesophyll with arm cells, rosette cells, and fusoid cells; and collateral vascular bundles. Herbaceous bamboos share two features: papillae scattered on the abaxial surface and parallel-sided arrays of bulliform cells; whereas woody bamboos share: centrally organized papillae and fan-shaped arrays of bulliform cells. Also within the woody bamboos, intercostal fibers and a midrib with only one vascular bundle (simple midrib) characterize the subtribe Arthrostylidiinae; whereas a midrib with more than one vascular bundle (complex midrib) and a stomatal apparatus with two pappilae per subsidiary cell characterize the subtribe Chusqueinae. There are also diagnostic features for the sampled species, such as: papillae shape, and the outline and structure of the midrib. An identification key for all the studied species is provided based on the anatomical features.

The first record of Jaapia ochroleuca (Basidiomycota) in the European part of Russia

2013 ◽  
Vol 47 ◽  
pp. 68-73
Author(s):  
S. V. Volobuev
Keyword(s):  
Nature Reserve ◽  
First Record ◽  
European Part ◽  
European Russia ◽  
Taxonomic Position ◽  
Morphological Description ◽  
Microscopic Structure ◽  
European Part Of Russia ◽  
Distribution And Ecology ◽  
First Time

The corticioid basidiomycete Jaapia ochroleuca (Bres.) Nannf. et J. Erikss. is recorded for the first time in the European Russia from the «Bryansky Les» Nature Reserve (Bryansk Region). The taxonomic position of the species is defined briefly. Its morphological description and data on distribution and ecology are provided. The details of microscopic structure of the collected specimen are illustrated.

scholarly journals A Meningo-Leucoencephalomyelitis Resembling Visna in Dutch Zwoeger Sheep

1966 ◽  
Vol 3 (5) ◽  
pp. 401-411 ◽  
Author(s):  
A. A. Ressang ◽  
F. C. Stam ◽  
G. F. De Boer
Keyword(s):  
White Matter ◽  
The Netherlands ◽  
Final Stage ◽  
Chronic Condition ◽  
Cerebral Lesions ◽  
Terminal Stage ◽  
Icelandic Sheep ◽  
Close Relationship ◽  
Secondary Demyelination ◽  
First Time

Zwoegerziekte is a disease in Dutch sheep which morphologically closely resembles an Icelandic sheep disease, Maedi2. Chronic lung affection and emaciation are the principal symptoms of both diseases. Visna is another chronic condition in Icelandic sheep affecting mainly the C.N.S. A virus has been isolated from sheep affected with Maedi or Visna and a close relationship in properties has been found between both viruses. In two Dutch sheep autopsied in the final stage of Zwoegerziekte, lesions were present in the C.N.S., which histologically resembled those in Visna. Another sheep slaughtered at the municipal abattoir, with lung lesions characteristic for the terminal stage of Zwoegerziekte, exhibited early cerebral lesions resembling Visna. The lesions in the C.N.S. of these three sheep were meningitis and severe encephalomyelitis of the glial type affecting the white matter. Secondary demyelination was striking. Though Zwoegerziekte has been known for several decades in the Netherlands, the accompanying C.N.S. lesions are described for the first time.

Atrial fibrillation is associated with high levels of monocyte-platelet-aggregates and increased CD11b expression in patients with aortic stenosis

2016 ◽  
Vol 115 (05) ◽  
pp. 993-1000 ◽  
Author(s):  
Katharina Berndt ◽  
Sandy Wydra ◽  
Daniel Tarnowski ◽  
Peggy Barthel ◽  
Silvio Quick ◽  
...  
Keyword(s):  
Aortic Stenosis ◽  
Cd11b Expression ◽  
Flow Cytometric ◽  
High Prevalence ◽  
Close Relationship ◽  
Enhanced Expression ◽  
Quantification Analysis ◽  
Inflammatory Processes ◽  
Platelet Aggregates ◽  
First Time

SummaryA growing body of evidence suggests a pivotal role of inflammatory processes in AF in a bidirectional manner. Infiltrating leukocytes seem to promote both structural and electrical remodelling processes in patients with AF. Monocyte-platelets-aggregates (MPAs) are sensitive markers of both platelets and monocyte activation. So far it is not clear whether the content of MPAs is affected by AF. The present study examined the content of MPAs and the activation of monocytes in elderly patients with an aortic stenosis in dependence of AF. These patients are known to have a high prevalence of AF. Flow-cytometric quantification analysis demonstrated that patients with AF have an increased content of MPAs (207 ± 13 cells/μl vs 307 ± 21 cells/μl, p<0.001), and enhanced expression of CD11b on monocytes (p<0.001), compared to patients in stable sinus rhythm (SR). The number of CD14+/CD16+ monocytes were only slightly elevated in patients with AF. These findings were seen in patients with permanent AF. But also patients with paroxysmal AF, even when presenting in SR, the MPAs were increased by 50 % (p<0.05) as well as the CD11b expression, which was twice as high (p<0.05) compared to stable SR. These results demonstrate for the first time a dependency of MPAs and CD11b expression on monocytes in the presence of AF and support the notion of a close relationship between AF, thrombogenesis and inflammation. The content of MPAs and the extent of activation on monocytes appear promising as biomarkers for paroxysmal AF and as possible future targets for developing novel pharmacological therapeutic strategies.Supplementary Material to this article is available online at www.thrombosis-online.com.

The larva of Hydropsyche perseus Malicky 2001, endemic to Kerkyra (Corfu) Island, including a key for the known Hydropsyche larvae of the Greek islands

Zootaxa ◽  
2018 ◽  
Vol 4504 (2) ◽  
pp. 296
Author(s):  
IOANNIS KARAOUZAS ◽  
YIANNIS KAPAKOS
Keyword(s):  
Endemic Species ◽  
Diagnostic Features ◽  
First Time

The larva of Hydropsyche perseus Malicky 2001, endemic species of Kerkyra Island (Corfu), Greece, is described for the first time. The diagnostic features of the species are described and illustrated, and some information regarding its ecology is included. In addition, a tabular key for larvae of the known Hydropsyche species of the Greek Islands is provided. 

The larvae of three Greek species of Hydropsyche (Trichoptera: Hydropsychidae) and key for larvae of known Aegean Hydropsyche species

Zootaxa ◽  
2018 ◽  
Vol 4382 (2) ◽  
pp. 381
Author(s):  
IOANNIS KARAOUZAS
Keyword(s):  
Balkan Peninsula ◽  
Diagnostic Features ◽  
Aegean Islands ◽  
First Time ◽  
Of Greece

The larvae of Hydropsyche cetibeli Malicky & Sipahiler 1993 from the Aegean, Hydropsyche mostarensis Klapálek 1898, endemic of the Balkan Peninsula, and Hydropsyche pygmalion Malicky 2001 endemic of Serifos Island (Cyclades, Greece) are described for the first time. The diagnostic features of the species are described and illustrated, and some information regarding their ecology is included. In addition, a tabular key for larvae of the known Hydropsyche species of Greece and the Aegean Islands is included. 

Unexpected diversity of Lacon Laporte, 1838 (Coleoptera: Elateridae: Agrypninae) in the Levant: revised species concepts, new species, and an identification key

Zootaxa ◽  
2019 ◽  
Vol 4679 (3) ◽  
pp. 401-449 ◽  
Author(s):  
ROBIN KUNDRATA ◽  
JOSEF MERTLIK ◽  
TAMÁS NÉMETH
Keyword(s):  
New Species ◽  
Species Concepts ◽  
Identification Key ◽  
Diagnostic Features ◽  
First Time

The species of genus Lacon Laporte, 1838 from the Levant are taxonomically revised. Currently, 18 species are known from the area covering the island of Cyprus and mainland from Hatay province of Turkey to Israel. Six species are described as new for science: Lacon mucheibensis sp. nov. (Israel), L. qatanensis sp. nov. (Syria), L. platiai sp. nov. (Jordan), L. safitensis sp. nov. (Syria), L. tafilensis sp. nov. (Jordan), and L. zenobiae sp. nov. (Lebanon, Syria). Lacon freidbergi Platia, 2010 is synonymized with L. lithophilus (Candèze, 1857), and L. kapleri Platia & Schimmel, 1994 with L. graecus (Candèze, 1857). Lacon drusus (Marseul, 1870) is recorded for the first time from Israel. Lacon lithophilus is recorded for the first time from Israel and Jordan. Lacon graecus is removed from the fauna of Levant, because all earlier reports of this species from Lebanon and Syria were based on misidentifications. Figures of habitus and main diagnostic features are provided for all species and an identification key to the Lacon species of the Levant is given. 

scholarly journals Redescriptions of Neanthes Kinberg, 1865 (Annelida: Errantia: Nereididae) species from worldwide regions

2021 ◽  
Vol 760 ◽  
Author(s):  
Tulio F. Villalobos-Guerrero ◽  
Jyothi Kara ◽  
Izwandy Idris
Keyword(s):  
Junior Synonym ◽  
Type Specimens ◽  
Diagnostic Features ◽  
St Helena ◽  
First Time

The present study redescribes four species of Neanthes Kinberg, 1865 (Nereididae de Blainville, 1818) based on their type specimens collected from different worldwide localities: Neanthes chilkaensis (Southern, 1921) from India, N. galetae (Fauchald, 1977) from Panama, N. helenae (Kinberg, 1865) from St Helena Island, and N. mossambica (Day, 1957) from Mozambique. The morphology of the types was re-examined for the first time after the species were originally described, and incorporated the recent improvements in the standards and terminology for describing nereidid features. The arrangement of paragnaths on area VI stood out among the diagnostic features used to distinguish these four species. Neanthes chilkaensis and N. helenae are the unique nereidids bearing p-bar paragnaths on the area VI. Both species are also distinctive as the former species only exhibited p-bar paragnaths on the area VII–VIII and the latter ventrolateral projections on the apodous segment. Further examination revealed that N. nanciae (Day, 1949) from St Helena is a junior synonym of N. helenae. Moreover, N. galetae and N. mossambica are distinguishable from other species also by the development of dorsal cirri, neuropodial postchaetal lobe and ventral ligule, the presence/absence of merged paragnaths on area IV, paired oesophageal caeca, among other features. This study has further contributed to the morphological delimitation of the species in Neanthes as a first step towards revising the genus.

scholarly journals The distribution of Allium schoenoprasum L. subsp. sibiricum (L.) Hartm. in Poland

2014 ◽  
Vol 68 (2) ◽  
pp. 149-156 ◽  
Author(s):  
Paweł Kwiatkowski
Keyword(s):  
Threatened Species ◽  
Taxonomic Position ◽  
General Distribution ◽  
Allium Schoenoprasum ◽  
First Time

Chorological analysis of the distribution of <em>Allium schoenoprasum</em> L. subsp. <em>sibiricum</em> (L) Hartm. presented in the paper is based on literature data, herbaria and the authors own observations. <em>A. *sibiricum</em> is a rare and threatened species in Poland, reported exclusively from the Karkonosze Mts. and the Pilsko Massif in the Beskid Żywiecki Mts. The author discusses the taxonomic position, general distribution as well as environmental and phytocoenotic conditions preferred by the species in Europe. Detailed phytosociological analysis of phytocoenoses in which <em>A. *sibiricum</em> typically occurs in the Karkonosze Mts. is presented. They belong to the association <em>Allietum sibirici</em> Šmarda 1950 which is described here for the first time from Poland.

scholarly journals A new pest of ficus in California: Macrohomotoma gladiata Kuwayama, 1908 (Hemiptera: Psylloidea: Homotomidae), new to North America

Check List ◽  
2016 ◽  
Vol 12 (3) ◽  
pp. 1882 ◽  
Author(s):  
Alessandra Rung
Keyword(s):  
North America ◽  
Diagnostic Features ◽  
First Time ◽  
New Pest

A new psyllid pest of ficus, Macrohomotoma gladiata (Hemiptera: Sternorrhyncha: Psylloidea), is reported for the first time from North America (California, U.S.A.). Notes on another adventive psyllid species that has been collected from ficus in California, Homotoma ficus, are given, together with a list diagnostic features that separate between M. gladiata and H. ficus.

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