scholarly journals On the distribution of Helichrysum arenarium (l.) Moench (Asreraceae) in Bulgaria

2019 ◽  
Vol 2 ◽  
Author(s):  
Elina Yankova-Tsvetkova ◽  
Stoyan Stoyanov ◽  
Antonina Vitkova ◽  
Ivanka Semerdjieva
Keyword(s):  
Medicinal Plants ◽  
Current Distribution ◽  
Gallbladder Disease ◽  
Limited Area ◽  
Herbarium Specimens ◽  
Protected Species ◽  
Narrow Strip ◽  
Perennial Plant ◽  
Asteraceae Family ◽  
Herbaceous Perennial

Helichrysum arenarium (L.) Moench is herbaceous perennial plant belonging to Asteraceae family. The plant is well known in phytotherapy for its potential in the treatment of gallbladder disease and is classified as endangered in a number of European countries. In Bulgaria it is a protected species according to the Biodiversity Act (Annex 4) and is in the List of Species of Medicinal Plants under special regimen of conservation and use. The data on the distribution of H. arenarium in the Bulgarian flora have not been updated for more than 20 years. The aim of this study is to determine the current distribution of H. arenarium in Bulgaria on the basis of reviewing the available herbarium specimens in the Bulgarian herbariums, literature data, and personal collections. As a result, the locations of the species on the territory of the country were described and mapped. In Bulgaria H. arenarium is represented with only a few populations located in a limited area in the northeastern part of the country, in a narrow strip between the towns of Shumen and Varna.

scholarly journals Potential of Medicinal Plants in the Asteraceae Family Found in Harau Lima Puluh Kota Regency

2021 ◽  
Vol 13 (2) ◽  
pp. 73
Author(s):  
Rizki Rizki ◽  
Chairunnisak Chairunnisak ◽  
Rina Alfina ◽  
Olivia Darlis ◽  
Rasdanelwati Rasdanelwati
Keyword(s):  
Data Analysis ◽  
Medicinal Plants ◽  
Literature Review ◽  
Herbarium Specimens ◽  
Tabular Form ◽  
Form Identification ◽  
Identification Guide ◽  
Exploratory Survey ◽  
Asteraceae Family

Harau is one of the areas with a wealth of flora and has not been fully explored, especially for medicinal plants. This research was carried out in July-September 2020 in Harau, Lima Puluh Kota District, using an exploratory survey by observing the research location. Samples of species in the Asteraceae family were taken  as data,  photos were tken, and samples of plants as herbarium specimens were taken as identification material. Furthermore, a literature review was carried out on this Asteraceae family plant which could  be used as medicinal ingredients. Data analysis was done descriptively. The data obtained was presented in tabular form. Identification of plants of the Asteraceae family found in Harau and species of this family that had the potential for treatment were identified using the identification guide literature. Based on the research conducted, it was found that 28 species in the Harau, Lima Puluh Kota District, with habitus terna, sufrutex, frutex, and liana. The Asteraceae family consisted of only one genus, except for Eupatorium which had three species, and Bidens which had two species.

ARAUCARIA GOROENSIS (ARAUCARIACEAE), A NEW MONKEY PUZZLE FROM NEW CALEDONIA, AND NOMENCLATURAL NOTES ON ARAUCARIA MUELLERI

2017 ◽  
Vol 74 (2) ◽  
pp. 123-139 ◽  
Author(s):  
R. R. Mill ◽  
M. Ruhsam ◽  
P. I. Thomas ◽  
M. F. Gardner ◽  
P. M. Hollingsworth
Keyword(s):  
New Species ◽  
New Caledonia ◽  
Limited Area ◽  
Herbarium Specimens ◽  
Female Cone ◽  
International Union ◽  
Nickel Mining

Araucaria goroensis R.R.Mill & Ruhsam sp. nov., a new monkey puzzle species from New Caledonia, is described and illustrated with photographs from the field and from herbarium specimens. Previously confused with Araucaria muelleri, it is more similar to A. rulei. It is distinguished from the latter species by its larger leaves, microsporophylls without a shouldered base, and shorter female cone bracts. It occurs in a very limited area of south-east New Caledonia, where its existence is threatened by nickel mining. Using the guidelines of the International Union for Conservation of Nature, we propose an assessment of Endangered for the new species and reassess Araucaria muelleri also as Endangered. A key to the seven species in the ‘large-leaved clade’ of New Caledonian species of Araucaria is given. The name Eutassa latifolia de Laub. is synonymised with Araucaria muelleri, and the recent typification of the latter name by Vieillard 1276 is rejected. Detailed reasoning is given for these nomenclatural acts.

scholarly journals Теория ленточной антенны, расположенной на плоской границе раздела одноосного магнитного метаматериала и изотропной среды

2019 ◽  
Vol 89 (10) ◽  
pp. 1598
Author(s):  
Т.М. Заборонкова ◽  
А.С. Зайцева ◽  
А.В. Кудрин ◽  
Н.В. Юрасова
Keyword(s):  
Singular Integral ◽  
Current Distribution ◽  
Input Impedance ◽  
Singular Integral Equations ◽  
Anisotropy Axis ◽  
Strip Conductor ◽  
Transmission Line Theory ◽  
Narrow Strip ◽  
Time Harmonic ◽  
Line Theory

A study is made of the electrodynamic characteristics of an antenna having the form of an infinitesimally thin, perfectly conducting narrow strip located at the plane interface of a uniaxial magnetic metamaterial and an isotropic magnetodielectric medium. The antenna is perpendicular to the anisotropy axis of the metamaterial and is excited by a time-harmonic given voltage. Singular integral equations for the antenna current are obtained in the case of an infinitely long strip conductor. Based on the solution of these equations, the current distribution and input impedance of the antenna are found and analyzed. The limits of applicability of an approximate method based on the transmission line theory for determining the antenna characteristics are established. Within the framework of this method, the results obtained are generalized to the case of a finite-length strip antenna.

Could marine animal conservation laws be responsible for the decline or extirpation of macroalgal populations in Bermuda over the past century?

2017 ◽  
Vol 60 (6) ◽  
Author(s):  
Craig W. Schneider ◽  
Christopher T. Flook
Keyword(s):  
Early 20Th Century ◽  
Past Century ◽  
Herbarium Specimens ◽  
Marine Animal ◽  
Population Abundance ◽  
Protected Species ◽  
Animal Conservation ◽  
Macroalgal Species ◽  
The Past ◽  
The Tropics

AbstractUsing over 10,000 archival herbarium specimens from Bermuda, we compared the presence or absence of seaweeds from a century ago with our more than 5000 collections from the last 30 years. Populations of parrotfish, important herbivores of macroalgae in the tropics, have increased since the 1993 amendment to the Bermuda 1978 Fisheries (Protected Species) Order. A fish pot ban for Bermuda was put into effect in 1990 to protect a variety of fish including parrotfish and several species of grouper, important predators of parrotfish that were rarely seen in island waters at the time. Intertidal grazing West Indian top shells were reintroduced in 1982 to Bermuda, and since then, along with the rise in parrotfish populations, inshore populations of many macroalgae have dramatically changed. We suggest that several large and abundant Bermuda macroalgal species recorded in the early 20th century appear to have been extirpated or are greatly diminished in sizes of individuals as well as population abundance, and propose that marine animal protections over the past 35 years are a possible reason for the changes we are presently observing.

scholarly journals Ethnomedical Knowledge of Plants Used for the Treatment of Tuberculosis in Johor, Malaysia

2016 ◽  
Vol 2016 ◽  
pp. 1-12 ◽  
Author(s):  
Siti Fatimah Sabran ◽  
Maryati Mohamed ◽  
Mohd Fadzelly Abu Bakar
Keyword(s):  
Medicinal Plants ◽  
Sampling Technique ◽  
Conservation Strategies ◽  
Herbarium Specimens ◽  
Transfer Of Knowledge ◽  
Snowball Sampling ◽  
Semistructured Interviews ◽  
Biomedical Terminology ◽  
Emic Perspective ◽  
First Time

This study documented ethnomedical knowledge of plants used for the treatment of tuberculosis (TB) and its related symptoms as practiced by the Jakun community of Kampung Peta, situated in Endau Rompin Johor National Park, Johor, Malaysia. Eight key informants were selected by snowball sampling technique and data about medicinal plants were collected by semistructured interviews, participatory observations, and focus group. Qualitative analysis was undertaken using thematic analysis. There were 23 species of plants (22 genera, 20 families) documented and herbarium specimens were deposited at the UTHM Herbarium.Dipterocarpus sublamellatuswas recorded for the first time with ethnomedical uses while other species were previously reported. The qualitative approach employed in this study demonstrates the emic perspective in terms of perceptions on traditional herbal medicine, transfer of knowledge, significant taboos related with medicinal plants, and their conservation efforts. Local and biomedical terminology in treatment of TB showed substantial correspondence. The outcomes obtained in the study are worth being further investigated for conservation strategies and are worthy of verifying their ethnomedical claims scientifically.

scholarly journals Distribution of the European bladdernut Staphylea pinnata (Staphyleaceae) in Poland

2021 ◽  
Vol 66 (2) ◽  
pp. 166-183
Author(s):  
Łukasz Piechnik ◽  
Przemysław Kurek ◽  
Tomasz Wójcik
Keyword(s):  
Literature Review ◽  
Current Distribution ◽  
Population Management ◽  
Distribution Range ◽  
Protected Species ◽  
Search Methods ◽  
Anthropogenic Origin ◽  
Northern Poland ◽  
Natural Range

This paper presents the current distribution range of the protected shrub European bladdernut Staphylea pinnata in Poland. The study was based on a literature review, multidisciplinary search methods and field visits. The paper presents 211 sites considered as natural (including 48 new) and 143 sites considered as sites of anthropogenic origin (including 116 new). The data included in this paper extend the natural range of the species mainly in the Sudety Mts & Sudety Foreland, Rożnów Foothills, and the Tarnogród Plateau. It has been confirmed that the areas of Przemyśl Foothills (54 sites) and Dynów Foothills (49 sites) are the sites most abundant in bladdernut considered as natural. A few sites of anthropogenic origin have been found in the area of northern Poland, several hundred kilometres from the border of the bladdernut continual distribution range. In the case of sites of anthropogenic origin, knowledge of their distribution has increased significantly. This paper provides a basis for further research on the bladdernut in Poland and Europe and may be useful in population management of this protected species.

scholarly journals Optimization of the processes of sterilization and micropropagation of cup plant (Silphium perfoliatum L.) from apical explants of seedlings in in vitro cultures

2012 ◽  
Vol 64 (4) ◽  
pp. 3-10 ◽  
Author(s):  
Magdalena Tomaszewska-Sowa ◽  
Anna Figas
Keyword(s):  
Growth Regulators ◽  
Energy Production ◽  
Production Plant ◽  
Perennial Plant ◽  
Rooting Medium ◽  
Lateral Shoots ◽  
Functional Features ◽  
Animal Feeding ◽  
Asteraceae Family

Cup plant (<em>Silphium perfoliatum</em> L.) is a tall, reaching up to 2.5 m, perennial plant that represents the Asteraceae family. <em>Silphium perfoliatum</em> L. can be applied in medicine, animal feeding, and as a decorative, honey-producing and energy production plant which proves its multi-functional features. Sowing material currently available in Poland is insufficient, which justifies the present attempts at propagating these plants in <em>in vitro</em> cultures. Therefore, <em>Silphium perfoliatum</em> L. seed sterilization and micropropagation processes were studied under controlled conditions <em>in in vitro</em> cultures. Among the tested methods, ACE proved to be the most effective for sterilization. The apical parts of seedlings were used as explants; they were placed onto MS media with growth regulators added. 4 growth regulator concentration variants were applied. The highest percentage of explants with lateral shoots (41.7%) and callus (90.3%) was obtained on MS medium with 5 mg x dm<sup>-3</sup> BAP + 1 mg × dm<sup>-3</sup> NAA added. Shoots were isolated and transferred onto MS rooting medium without growth regulators. The rooted plants were transferred to the greenhouse and acclimatised to <em>ex vitro</em> conditions.

scholarly journals Zingiber capitatum (wild ginger).

2020 ◽  
Author(s):  
Sylvan Kaufman
Keyword(s):  
Invasive Species ◽  
Native Range ◽  
Perennial Plant ◽  
Medicinal Properties ◽  
Herbaceous Perennial

Abstract Zingiber capitatum is a herbaceous, perennial plant that spreads by rhizomes and possibly also by seed. It is native to India and is probably also native to Bangladesh and Nepal. It has medicinal properties and is likely to have been introduced to countries outside its native range for horticultural use. It is cultivated in Brazil and is also present in China and Vietnam. It is described as an invasive, transformer species in Cuba, but this is thought to be a misidentification. It is not listed as a weed or invasive species in any other country and information on its possible impact on habitats or biodiversity outside of its native range is lacking.

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