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Encephalartos Dolomiticus
''Encephalartos dolomiticus'', the Wolkberg cycad, is a critically endangered species of cycad. It is only found in the Wolkberg at elevations of 1100–1500 meters. The area is near Penge in southeastern Limpopo Province, South Africa. Description It is an arborescent plant, with a stem up to 2 m long and with a diameter of 40 cm, at the base of which often some shoots grow. The leaves, arranged like a crown at the apex of the stem, are 60–80 cm long and bluish in color and sometimes twisted on their own axis. The lanceolate leaflets, 12–17 cm long, are arranged on the rachis in the opposite way, at an angle of 45°; the margins are whole and the lower one can be equipped with small denticles. The petiole is straight and equipped with small spines. It is a dioecious species, with green ovoid male cones, 35–50 cm long and 10 cm broad. The female cones, of the same shape, are 30–45 cm long and have a diameter of 18–25 cm. Up to three cones can grow on each plant at a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycad
Cycads are seed plants that typically have a stout and woody (ligneous) trunk (botany), trunk with a crown (botany), crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to several meters tall. They typically grow very slowly and live very long. Because of their superficial resemblance, they are sometimes mistaken for Arecaceae, palms or ferns, but they are not closely related to either group. Cycads are gymnosperms (naked-seeded), meaning their fertilization, unfertilized seeds are open to the air to be directly fertilized by pollination, as contrasted with angiosperms, which have enclosed seeds with more complex fertilization arrangements. Cycads have very specialized pollinators, usually a specific species of beetle. Both male and female cycads bear cones (strobilus, strobili), somewhat similar to conife ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wolkberg
The Wolkberg is a mountain range in Tzaneen, Limpopo Province, South Africa. It is a northern termination and a subrange of the Drakensberg mountain range which lines up from Eastern Cape, Lesotho, Kwazulu Natal and Mpumalanga. At 2200 m (7200 ft) above sea level, it is the highest mountain range in Limpopo, together with the Iron crown mountain. Its Meteorological significance is that it brings along cold fronts and is a source of cold winters throughout the Limpopo province, the cold front gets transferred from greater Drakensberg mountains in Kwazulu Natal all the way to the Wolkberg. Without the Wolkberg, Limpopo will not experience cold winters at all . The range extends for about in a NW/SE direction north of Sekhukhuneland. The nearest towns are Haenertsburg and Tzaneen. Physiography The range forms a high plateau reaching up to 2126 m in height at the Ysterkroon, its highest point. Other conspicuous peaks are 2050 m high Serala, 1838 m high M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penge, Limpopo
Penge, alternatively known as Mabulane, is a township in Sekhukhune District Municipality in the Limpopo province of South Africa. Mining village on the Lepelle River, 37 km north of Burgersfort. It was established after amosite was discovered there in 1907. Named after Kgosi Mabulane of Roka Motshana tribal authority or alternatively Penge, a suburb of London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo .... References {{Authority control Populated places in the Fetakgomo Tubatse Local Municipality Mining communities in South Africa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limpopo Province
Limpopo is the northernmost Provinces of South Africa, province of South Africa. It is named after the Limpopo River, which forms the province's western and northern borders. The capital and largest city in the province is Polokwane, while the provincial legislature is situated in Lebowakgomo. The province is made up of 3 former homelands of Lebowa, Gazankulu and Venda and the former parts of the Transvaal province. The Limpopo province was established as one of the new nine provinces after South Africa's first democratic election on the 27th of April 1994. The province's name was first "Northern Transvaal", later changed to "Northern Province" on the 28th of June 1995, together with two other provinces. The name was later changed again in 2002 to the Limpopo province. Limpopo is made up of 3 main ethnic groups namely; Pedi people, Tsonga people, Tsonga and Venda people. Traditional leaders and chiefs still form a strong backbone of the province's political landscape. Establ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sarcotesta
The sarcotesta is a fleshy seedcoat, a type of testa. Examples of seeds with a sarcotesta are pomegranate and some cycad seeds. The sarcotesta of pomegranate seeds consists of epidermal cells derived from the integument, and there are no aril An aril (pronounced ), also called an arillus, is a specialized outgrowth from a seed that partly or completely covers the seed. An arillode or false aril is sometimes distinguished: whereas an aril grows from the attachment point of the see ...s on these seeds. References External links * Fruit morphology Plant anatomy {{Botany-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encephalartos
''Encephalartos'' is a genus of cycad native to Africa. Several species of ''Encephalartos'' are commonly referred to as bread trees, bread palms or kaffir bread, since a bread-like starchy food can be prepared from the centre of the stem. The genus name is derived from the Greek words ''en'' (within), ''kephalē'' (head), and ''artos'' (bread), referring to the use of the pith to make food. They are, in evolutionary terms, some of the most primitive living gymnosperms. All the species are endangered, some critically, due to their exploitation by collectors and traditional medicine gatherers. The whole genus is listed under CITES Appendix I which prohibits international trade in specimens of these species except for certain non-commercial motives, such as scientific research. Description Several of the species possess stout trunks. In '' E. cycadifolius'', the main trunks are up to high, and several of them may be united at a base where a former main trunk once grew. The persist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Described In 1988
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 los ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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