Cycas Tansachana
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Cycas Tansachana
''Cycas tansachana'' is a species of cycad in Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b .... They are located to the northeast of Khong Khi Sua in Kaeng Khoi District, Saraburi Province, central Thailand. It is also found in Praphotisat Cave Temple Huai Haeng (ห้วยแห้ง) Subdistrict, Kaeng Khoi District.Sudarat Hengbunmee, Duangkamol Maensiri and Pongthep Suwanwaree. Conservation of Cycas tansachana: A case study of Praphotisat Cave Temple (ถ้ำพระโพธิสัตว์), Kaengkhoi district, Saraburi province. It is locally abundant, but has a highly restricted distribution. References tansachana Endemic flora of Thailand Taxa named by Ken Hill (botanist) Taxa named by Si Lin Yang {{cycad-stub ...
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Cycad
Cycads are seed plants that typically have a stout and woody (ligneous) trunk with a 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 palms or ferns, but they are not closely related to either group. Cycads are gymnosperms (naked-seeded), meaning their 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 ( strobili), somewhat similar to conifer cones. Cycads have been reported to fix nitrogen in asso ...
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Thailand
Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bordered to the north by Myanmar and Laos, to the east by Laos and Cambodia, to the south by the Gulf of Thailand and Malaysia, and to the west by the Andaman Sea and the extremity of Myanmar. Thailand also shares maritime borders with Vietnam to the southeast, and Indonesia and India to the southwest. Bangkok is the nation's capital and largest city. Tai peoples migrated from southwestern China to mainland Southeast Asia from the 11th century. Indianised kingdoms such as the Mon, Khmer Empire and Malay states ruled the region, competing with Thai states such as the Kingdoms of Ngoenyang, Sukhothai, Lan Na and Ayutthaya, which also rivalled each other. European contact began in 1511 with a Portuguese diplomatic mission to Ayuttha ...
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Khong Khi Sua
Khong may refer to: * Khong District, Laos, a district of Champasak Province **Khong Island, in Laos * Khong District, Nakhon Ratchasima, Thailand *Khong, Iran (other), places in Iran People with the surname *Lawrence Khong (born 1952), Singaporean Christian leader *Yuen Foong Khong (born 1956), Malaysian political scientist *Kelvin Khong (born ), Singaporean general *Rachel Khong (born 1985), Malaysian-born American writer *Khổng Tú Quỳnh (born 1991), Vietnamese pop singer *Khổng Thị Hằng (born 1993), Vietnamese footballer See also * * Mekong River The Mekong or Mekong River is a trans-boundary river in East Asia and Southeast Asia. It is the world's twelfth longest river and the third longest in Asia. Its estimated length is , and it drains an area of , discharging of water annual ...
, also known as Khong River {{disambiguation, geo, surname ...
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Kaeng Khoi District
Kaeng Khoi ( th, แก่งคอย, ) is a district ('' amphoe'') of Saraburi province in central Thailand. Located on the bank of the Pa Sak River amid the surrounding hills of the Dong Phaya Yen Mountains, its main town of the same name developed throughout the 19th century, first as a trading post on the river and the passageway into the Northeast, then as a railway town when the Northeastern Railway was built through the town at the end of the century. Today, it has developed into a major industrial centre, especially of cement manufacturing. History Evidence of early human settlement in the area now covered by Kaeng Khoi district is found in the archaeological site of Ban Dong Nam Bo by the Pa Sak River, which revealed a late-prehistoric (iron age) settlement dated to 2,000–1,500 years before present, and the cave of Tham Phra Phothisat in the hills to the district's east, which features Dvaravati-era Buddhist carvings tentatively dated to the 6th to 8th centuries CE ...
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Cycas
''Cycas'' is a genus of plants belonging to a very ancient lineage, the Cycadophyta, which are not closely related to palms, ferns, trees or any other modern group of plants. They are evergreen perennials which achieved their maximum diversity in the Jurassic and Cretaceous periods, when they were distributed almost worldwide. At the end of the Cretaceous, when the non-avian dinosaurs became extinct, so did most of the cycas in the Northern Hemisphere. ''Cycas'' is the type genus and the only extant genus recognised in the family Cycadaceae. About 113 species are accepted. ''Cycas circinalis'', a species endemic to India, was the first cycad species to be described in western literature, and was the type of the generic name, ''Cycas''. The best-known ''Cycas'' species is '' Cycas revoluta''. Range The genus is native to the Old World, with the species concentrated around the equatorial regions - eastern and southeastern Asia including the Philippines with 10 species (9 of which a ...
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Endemic Flora Of Thailand
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ...
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Taxa Named By Ken Hill (botanist)
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in '' Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the i ...
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