Cycas Chenii
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Cycas Chenii
''Cycas chenii'' is a species of cycad endemic to the Red River valley of Yunnan, southern China. It is found in Honghe County and Shuangbai County, Yunnan. It is most closely related to '' Cycas guizhouensis''. Distribution ''Cycas chenii'' has been recorded in the following townships (Zhou, et al. 2015). *Dutian (独田乡), Shuangbai County ( type locality) *Lianhua (莲花), Honghe County *Menglong (勐龙河), Honghe County *Qingshuihe (清水河), Shuangbai County Shuangbai County (; Chuxiong Yi script: , IPA: ) is under the administration of the Chuxiong Yi Autonomous Prefecture, in the central part of Yunnan province, China. It is the southernmost county-level division The administrative divisions ... References * Wei Zhou, Meng-Meng Guan and Xun Gong. 2015''Cycas chenii'' (Cycadaceae), A New Species from China, and its Phylogenetic Position Journal of Systematics and Evolution. 53(6); 489–498. DOI: 10.1111/jse.12153 chenii Flora of Yunnan Plants des ...
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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 ...
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Red River (Asia)
The Red River, also known as the Hong River (; vi, Sông Hồng; Chữ Nôm: 瀧紅; Chữ Hán: 紅河), the ' and ' (lit. "Mother River") in Vietnamese, and the (, ' Nguyên Giang) in Chinese, is a -long river that flows from Yunnan in Southwest China through northern Vietnam to the Gulf of Tonkin. According to C. Michael Hogan, the associated Red River Fault was instrumental in forming the entire South China Sea at least as early as 37 million years before present. The name red and southern position in China are associated in traditional cardinal directions. Geography The Red River begins in China's Yunnan province in the mountains south of Dali. Main headstreams Leqiu River, Xi River and Juli River confluence at Nanjian where they form the Lishe River. The Lishe River meets with another headstream, the Yijie River at Hongtupo, Chuxiong Prefecture. It flows generally southeastward, passing through Yi and Dai ethnic minority areas before leaving C ...
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Yunnan
Yunnan , () is a landlocked Provinces of China, province in Southwest China, the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the Chinese provinces of Guizhou, Sichuan, autonomous regions of Guangxi, and Tibet Autonomous Region, Tibet as well as Southeast Asian countries: Vietnam, Laos, and Myanmar. Yunnan is China's fourth least developed province based on disposable income per capita in 2014. Yunnan is situated in a mountainous area, with high elevations in the northwest and low elevations in the southeast. Most of the population lives in the eastern part of the province. In the west, the altitude can vary from the mountain peaks to river valleys by as much as . Yunnan is rich in natural resources and has the largest diversity of plant life in China. Of the approximately 30,000 species of Vascular plant, higher plants in China, Yu ...
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Honghe County
Honghe County () is located in Honghe Hani and Yi Autonomous Prefecture, Yunnan Yunnan , () is a landlocked province in the southwest of the People's Republic of China. The province spans approximately and has a population of 48.3 million (as of 2018). The capital of the province is Kunming. The province borders the C ... province, China. Administrative divisions In the present,Honghe County has 5 towns and 8 townships. ;5 towns ;8 townships Climate References External linksHonghe County Official Website County-level divisions of Honghe Prefecture {{Yunnan-geo-stub ...
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Shuangbai County
Shuangbai County (; Chuxiong Yi script: , IPA: ) is under the administration of the Chuxiong Yi Autonomous Prefecture, in the central part of Yunnan province, China. It is the southernmost county-level division The administrative divisions of China have consisted of several levels since ancient times, due to China's large population and geographical area. The constitution of China provides for three levels of government. However in practice, there a ... of Chuxiong Prefecture. Administrative divisions Shuangbai County has 5 towns and 3 townships. ;5 towns ;3 townships * Anlongbao () * Ainishan () * Dutian () Ethnic groups The ''Shuangbai County Gazetteer'' (1996:89-90) lists the following ethnic subgroups. All population statistics, given in parentheses, are as of 1986. *Yi **Luoluo 罗罗 (30,237) **Luowu 罗武 (3,455; autonym: Naisu 乃苏) **Ache 阿车 (20,543) **Chesu 车苏 (2,528): Candoutian 蚕豆田, Hekou Township 河口乡; Damaidi 大麦地, Yulong 雨 ...
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Cycas Guizhouensis
''Cycas guizhouensis'' is a species of cycad endemic to southwestern China. Distribution It is found in Nanpan and Qingshui valleys in southwestern Guizhou province (including Xingyi) and also in eastern Yunnan and northwestern Guangxi provinces (including Xilin County and Leye County).Whitelock, Loran M. 2002. ''The Cycads''. Portland: Timber Press. In Xingyi, Guizhou, specimens were collected from Wantun Village 万屯村. It was used as a famine food by local ethnic minorities during the Cultural Revolution The Cultural Revolution, formally known as the Great Proletarian Cultural Revolution, was a sociopolitical movement in the People's Republic of China (PRC) launched by Mao Zedong in 1966, and lasting until his death in 1976. Its stated goal .... Wild populations are very small, with fewer than 50 individuals per population.Zheng Y, Liu J, Feng X, Gong X. 2017. The distribution, diversity, and conservation status of ''Cycas'' in China. Ecol Evol. 2017;7:3212–3 ...
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Type Locality (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost a ...
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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 ar ...
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Flora Of Yunnan
Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms ''gut flora'' or ''skin flora''. Etymology The word "flora" comes from the Latin name of Flora, the goddess of plants, flowers, and fertility in Roman mythology. The technical term "flora" is then derived from a metonymy of this goddess at the end of the sixteenth century. It was first used in poetry to denote the natural vegetation of an area, but soon also assumed the meaning of a work cataloguing such vegetation. Moreover, "Flora" was used to refer to the flowers of an artificial garden in the seventeenth century. The distinction between vegetation (the general appearance of a community) and flora (the taxonomic composition of a community) was first made by Jules Thurmann (1849). Prior to this, the two terms were used indiscriminately.Thurmann, J. (1849). ''Essai de Phyt ...
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