|
Cladium Mariscus
''Cladium mariscus'' is a species of flowering plant in the Cyperaceae, sedge family known by the common names swamp sawgrass, great fen-sedge, saw-sedge or sawtooth sedge. Previously it was known as elk sedge. It is native of temperate Europe and Asia where it grows in alkali soil, base-rich boggy areas and lakesides. It can be up to tall, and has leaves with hard serrated edges. In the past, it was an important material to build thatching, thatched roofs; harvesting it was an arduous task due to its sharp edges that can cause deep lacerations.The Worst Jobs in History, The Worst Rural Jobs in History, Channel 4, 2006 Subspecies *''C. m. californicum'' (S.Watson) Govaerts - California, Arizona, New Mexico, Nevada, Utah, Texas, Sonora, Coahuila *''C. m. intermedium'' Kük. - Australia, New Caledonia *''C. m. jamaicense'' (Crantz) Kük. - Latin America from Mexico to Argentina; West Indies; southeastern United States from Texas to Delaware; naturalized in tropical Africa and on m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Linnaeus
Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the modern system of naming organisms. He is known as the "father of modern taxonomy". Many of his writings were in Latin; his name is rendered in Latin as and, after his 1761 ennoblement, as . Linnaeus was born in Råshult, the countryside of Småland, in southern Sweden. He received most of his higher education at Uppsala University and began giving lectures in botany there in 1730. He lived abroad between 1735 and 1738, where he studied and also published the first edition of his ' in the Netherlands. He then returned to Sweden where he became professor of medicine and botany at Uppsala. In the 1740s, he was sent on several journeys through Sweden to find and classify plants and animals. In the 1750s and 1760s, he continued to collect an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Baptist Emanuel Pohl
Johann Baptist Emanuel Pohl (23 February 1782, Česká Kamenice (german: Böhmisch Kamnitz) – 22 May 1834, Vienna) was an Austrian botanist, entomologist, geologist, mineralogist, and physician. Biography Johann Emanuel Pohl grew up in ''Politz an der Elbe'' (''Boletice nad Labem''− of northwestern Bohemia, in the present day Děčín District of the northern Czech Republic. He studied in Prague, and graduated as Doctor of Medicine in 1808. While he taught botany at the University he became librarian and curator of the collections of the Princess Kinsky. After a stint teaching at the University he worked in military hospitals in Náchod and Prague. In this period he published the ''Tentamen florae bohemicae'' of which only the first two volumes were published: ''Expositio generalis anatomica organi auditus per classes animalium'' and ''Systematischer Überblick der Reihenfolge der einfachen Fossilien''. He made his professional name in several branches of natural history ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyperaceae
The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus ''Carex'' with over 2,000 species. These species are widely distributed, with the centers of diversity for the group occurring in tropical Asia and tropical South America. While sedges may be found growing in almost all environments, many are associated with wetlands, or with poor soils. Ecological communities dominated by sedges are known as sedgelands or sedge meadows. Some species superficially resemble the closely related rushes and the more distantly related grasses. Features distinguishing members of the sedge family from grasses or rushes are stems with triangular cross-sections (with occasional exceptions, a notable example being the tule which has a round cross-section) and leaves that are spirally arranged in three ranks. In comparison, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alkali Soil
Alkali, or Alkaline, soils are clay soils with high pH (greater than 8.5), a poor soil structure and a low infiltration capacity. Often they have a hard calcareous layer at 0.5 to 1 metre depth. Alkali soils owe their unfavorable physico-chemical properties mainly to the dominating presence of sodium carbonate, which causes the soil to swellManaging irrigation water quality, Oregon State University, USA Retrieved on 2012-10-04. and difficult to clarify/settle. They derive their name from the group of elements, to which |
Willdenowia (journal)
''Willdenowia: Annals of the Botanic Garden and Botanical Museum Berlin'' is a triannual peer-reviewed scientific journal on plant, algal, and fungal taxonomy published by the Botanic Garden and Botanical Museum Berlin, Freie Universität Berlin. It was established in 1895 as ''Notizblatt des Königlichen botanischen Gartens und Museums zu Berlin,'' and was renamed to the current title in 1954 to honour botanist Carl Ludwig Willdenow Carl Ludwig Willdenow (22 August 1765 – 10 July 1812) was a German botanist, pharmacist, and plant taxonomist. He is considered one of the founders of phytogeography, the study of the geographic distribution of plants. Willdenow was als ... (1765-1812), director of the Royal Botanic Garden in Schöneberg near Berlin. Abstracting and indexing The journal is abstracted and indexed in: References {{reflist External links Online edition (BioOne) Botany journals Publications established in 1895 English-language journals Biannual jou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thatching
Thatching is the craft of building a roof with dry vegetation such as straw, water reed, sedge (''Cladium mariscus''), rushes, heather, or palm branches, layering the vegetation so as to shed water away from the inner roof. Since the bulk of the vegetation stays dry and is densely packed—trapping air—thatching also functions as insulation. It is a very old roofing method and has been used in both tropical and temperate climates. Thatch is still employed by builders in developing countries, usually with low-cost local vegetation. By contrast, in some developed countries it is the choice of some affluent people who desire a rustic look for their home, would like a more ecologically friendly roof, or who have purchased an originally thatched abode. History Thatching methods have traditionally been passed down from generation to generation, and numerous descriptions of the materials and methods used in Europe over the past three centuries survive in archives and early publica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Worst Jobs In History
''The Worst Jobs in History'' is a British television series hosted by Tony Robinson on Channel 4. The second series was shown in March 2006 on History Television in Canada, then in April 2006 on Channel 4 in the UK. The first season is also shown with some regularity on History International. Tony Robinson tries his hand at each of the jobs, ultimately nominating which one he thought was the worst in each program. First series This was broadcast in 2004 and concentrated on a different historical period per program: Roman, Anglo-Saxon, Medieval, Tudor, Stuarts, Georgian, and Victorian. Some of the more repulsive or dangerous jobs included fuller, executioner, leech collector, plague burier, rat-catcher, leather tanner, gong farmer, and sin-eater. There was a one-off special called ''The Worst Christmas Jobs in History'' in December 2005. Second series Broadcast first in March 2006 on The History Channel in Canada, then in April 2006 on Channel 4 in the UK. This series conc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cladium
''Cladium'' (fen-sedge, sawgrass or twig-sedge) is a genus of large sedges, with a nearly worldwide distribution in tropical and temperate regions. These are plants characterized by long, narrow (grass-like) leaves having sharp, often serrated (sawtooth-like) margins, and flowering stems 1–3 m tall bearing a much-branched inflorescence. Like many plants found in wet habitats, it has deeply buried rhizomes that can produce tall shoots with dense canopies. ''Cladium mariscus ''subsp.'' jamaicense'', or saw-grass, is common in marshes and savannas throughout the tropical Americas. One typical and well-known area of extensive saw-grass growth is the Florida Everglades; sawgrass is the plant referred to by the descriptor, "River of Grass". Like many species of the Everglades, ''C. jamaicense'' grows in extremely infertile conditions, particularly wet sites that are low in phosphorus. Dense sawgrass beds are intermingled with other vegetation types. Together they produce a rich arr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flora Of Lebanon
The flora of Lebanon includes approximately 2,600 plant species. Situated on the eastern coast of the Mediterranean Basin, Lebanon is a reservoir of plant diversity and one of the world's biodiversity hotspots for conservation priorities. Endemic species constitute 12% of the Lebanese flora; 221 plant species are broad endemics and 90 are narrow endemics.. Important Plant Areas (IPAs) featuring the country exceptional botanical richness were defined in 2018. The natural vegetation of Lebanon has been threatened by overexploitation and fragmentation as a result of urban expansion, overgrazing, tourism and the impact of warfare. The cedar of Lebanon is the national symbol of the country; growing in the Lebanon Mountain range, these trees have been heavily harvested over the years for their valuable timber and few mature trees still remain. Nevertheless, Lebanon is more heavily wooded than most other countries in the region and pine, oak, fir, beech, cypress and juniper are to be f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1753
Plants are predominantly photosynthetic eukaryotes of the kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all current definitions of Plantae exclude the fungi and some algae, as well as the prokaryotes (the archaea and bacteria). By one definition, plants form the clade Viridiplantae (Latin name for "green plants") which is sister of the Glaucophyta, and consists of the green algae and Embryophyta (land plants). The latter includes the flowering plants, conifers and other gymnosperms, ferns and their allies, hornworts, liverworts, and mosses. Most plants are multicellular organisms. Green plants obtain most of their energy from sunlight via photosynthesis by primary chloroplasts that are derived from endosymbiosis with cyanobacteria. Their chloroplasts contain chlorophylls a and b, which gives them their green color. Some plants are parasitic or mycotrophic and have lost the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
