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Cycas Petraea
''Cycas petraea'' is a species of cycad endemic to Thailand. It is known only from a single line of limestone mountains flanking the Phu Kra Dueng massif to the east, in Phu Kradueng National Park Phu Kradueng National Park ( th, อุทยานแห่งชาติภูกระดึง), in the Si Than sub-district of Amphoe Phu Kradueng, Loei Province, is one of the best known national parks of Thailand. It has a high point ..., Loei Province, Thailand. References petraea {{cycad-stub ... [...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] |
Endemic
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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 Ayutthaya, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phu Kradueng National Park
Phu Kradueng National Park ( th, อุทยานแห่งชาติภูกระดึง), in the Si Than sub-district of Amphoe Phu Kradueng, Loei Province, is one of the best known national parks of Thailand. It has a high point of 1,316 m (4318 ft) elevation at Khok Moei. It was proclaimed a national park on 23 November 1962, making it the second national park of Thailand after Khao Yai National Park. The park is closed to visitors during the rainy season (1 June - 30 September). Toponymy "Phu" (ภู) comes from the Thai-Isan word "phukao" (ภูเขา), meaning mountain. The name "kradueng" (กระดึง), or "krading" (กระดิ่ง) in the local dialect of Loei Province, can be translated as "rakhang yai" (ระฆังใหญ่), meaning "large bell". This name comes from a legend relating to a Buddhist holiday. During the holiday many of the townspeople heard the sound of a large bell. They believed it to be the bell of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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