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Wulong Karst
The Wulong Karst () is a karst landscape located within the borders of Wulong District, Chongqing Municipality, People's Republic of China. It is divided into three areas containing the Three Natural Bridges, the Qingkou Tiankeng (箐口天坑) and Furong Cave respectively. It is a part of the Wulong Karst National Geology Park as well as part of the South China Karst, a UNESCO World Heritage Site. Scenic areas Three Natural Bridges The Three Natural Bridges (), a series of natural limestone bridges located in Xiannushan Town (), Wulong County, are the nucleus of a conservation area which includes the following features: * Tianlong (天龙桥) Qinglong (青龙桥) and Heilong (黑龙桥) limestone bridges; * Qinglong Tiankeng (青龙天坑); * Shenying Tiankeng (神鹰天坑); * Yangshui River Karst Canyon (羊水河喀斯特峡谷); * Longshui Gorge (龙水峡地缝); * Central Shiyuan Tiankeng (中石院天坑); * Lower Shiyuan Tiankeng (下石院天坑); * Seventy-two Branc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karst
Karst is a topography formed from the dissolution of soluble rocks such as limestone, dolomite, and gypsum. It is characterized by underground drainage systems with sinkholes and caves. It has also been documented for more weathering-resistant rocks, such as quartzite, given the right conditions. Subterranean drainage may limit surface water, with few to no rivers or lakes. However, in regions where the dissolved bedrock is covered (perhaps by debris) or confined by one or more superimposed non-soluble rock strata, distinctive karst features may occur only at subsurface levels and can be totally missing above ground. The study of ''paleokarst'' (buried karst in the stratigraphic column) is important in petroleum geology because as much as 50% of the world's hydrocarbon reserves are hosted in carbonate rock, and much of this is found in porous karst systems. Etymology The English word ''karst'' was borrowed from German in the late 19th century, which entered German much earlier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pinus Massoniana
''Pinus massoniana'' (English: Masson's pine, Chinese red pine, horsetail pine; Chinese: 馬尾松) is a species of pine, native to Taiwan, a wide area of central and southern China, and northern Vietnam. Description It is an evergreen tree reaching in height, with a broad, rounded crown of long branches. The bark is thick, grayish-brown, and scaly plated at the base of the trunk, and orange-red, thin, and flaking higher on the trunk. The leaves are needle-like, dark green, with two per fascicle, long and wide, the persistent fascicle sheath long. The cones are ovoid, long, chestnut-brown, opening when mature in late winter to broad. The seeds are winged, long with a wing. Pollination occurs in mid-spring, with the cones maturing 18–20 months after. Distribution and habitat It is native to Taiwan, a wide area of central and southern China including Hong Kong, and northern Vietnam, growing at low to moderate altitudes, mostly below but rarely up to above sea l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vitex Negundo
''Vitex negundo'', commonly known as the Chinese chaste tree, five-leaved chaste tree, or horseshoe vitex, or nisinda is a large aromatic shrub with quadrangular, densely whitish, tomentose branchlets. It is widely used in folk medicine, particularly in South and Southeast Asia. ''Vitex negundo'' is an erect shrub or small tree growing from in height. The bark is reddish brown. Its leaves are digitate, with five lanceolate leaflets, sometimes three. Each leaflet is around in length, with the central leaflet being the largest and possessing a stalk. The leaf edges are toothed or serrated and the bottom surface is covered in hair. The numerous flowers are borne in panicles in length. Each is around long and are white to blue in color. The petals are of different lengths, with the middle lower lobe being the longest. Both the corolla and calyx are covered in dense hairs. The fruit is a succulent drupe, in diameter, rounded to egg-shaped. It is black or purple when ripe. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pyracantha Fortuneana
''Pyracantha crenatoserrata'', commonly known as Chinese firethorn or Yunnan firethorn, is a species of firethorn. It is a short shrub. It is cultivated for its decorative bright red pome In botany, a pome is a type of fruit produced by flowering plants in the subtribe Malinae of the family Rosaceae. Well-known pomes include the apple, pear, and quince. Etymology The word ''pome'' entered English in the late 14th century, and re ... fruit (inaccurately called berries). The flowers are white. It survives in warm climates. It cannot tolerate frost, but it can withstand drought. This species originates from central China. It has become naturalised across parts of Australia, New Zealand and the United States. References fortuneana {{maleae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kalopanax Ricinifolium
''Kalopanax septemlobus'', common names castor aralia, tree aralia, and prickly castor oil tree, is a deciduous tree in the family Araliaceae, the sole species in the genus ''Kalopanax''. It is native to northeastern Asia, from Sakhalin and Japan west to southwestern China. It is called ''cìqiū'' () in Chinese, ''eumnamu'' () in Korean, and ''harigiri'' (; ) in Japanese. Description The tree grows to tall, with a trunk up to diameter. The stems are often spiny, with stout spines up to long. The leaves are alternate, in appearance similar to a large '' Fatsia'' or ''Liquidambar'' (sweetgum) leaf, across, palmately lobed with five or seven lobes, each lobe with a finely toothed margin. The leaf lobes vary greatly in shape, from shallow lobes to cut nearly to the leaf base. Trees with deeply lobed leaves were formerly distinguished as ''K. septemlobus'' var. ''maximowiczii'', but the variation is continuous and not correlated with geography, so it is no longer regarded as dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Acutissima
''Quercus acutissima'', the sawtooth oak, is an Asian species of oak native to China, Tibet, Korea, Japan, Indochina (Vietnam, Thailand, Myanmar, Cambodia) and the Himalayas (Nepal, Bhutan, northeastern India). It is widely planted in many lands and has become naturalized in parts of North America. ''Quercus acutissima'' is closely related to the Turkey oak, classified with it in ''Quercus'' sect. ''Cerris'', a section of the genus characterised by shoot buds surrounded by soft bristles, bristle-tipped leaf lobes, and acorns that mature in about 18 months. Description ''Quercus acutissima'' is a medium-sized deciduous tree growing to tall with a trunk up to in diameter. The bark is dark gray and deeply furrowed. The leaves are long and wide, with 14–20 small saw-tooth-like triangular lobes on each side, with the teeth of very regular shape. The flowers are wind-pollinated catkins. The fruit is an acorn, maturing about 18 months after pollination, long and 2 cm br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Fabrei
''Quercus fabrei'', or Faber's oak, is a species of deciduous oak tree found in China (Anhui, Fujian, Guangdong, Guangxi, Guizhou, Henan, Hubei, Hunan, Jiangsu, Jiangxi, south Shaanxi, Sichuan, Yunnan and Zhejiang provinces) as well as Hong Kong (Tai Po and Northern districtsCheck List of Hong Kong Plants, 7th edition (page 73) ). Faber's oak can take on the form of either a large shrub or a tree, with the latter form reaching up to 20 metres in height. The tree has elongated leaves, with the tip of the leaf being wider than the base. The leaves are serrated, although the teeth are smaller than those of more well-known oak species such as '' |
List Of Quercus Species
The genus ''Quercus'' contains about 500 species, some of which are listed here. The genus, as is the case with many large genera, is divided into subgenera and sections. Traditionally, the genus ''Quercus'' was divided into the two subgenera ''Cyclobalanopsis'', the ring-cupped oaks, and ''Quercus'', which included all the other sections. However, a comprehensive revision in 2017 identified different relationships. Now the genus is commonly divided into a subgenus ''Quercus'' and a sugenus ''Cerris'', with ''Cyclobalanopsis'' included in the latter. The sections of subgenus ''Quercus'' are mostly native to the New World, with the notable exception of the white oaks of sect. ''Quercus'' and the endemic Quercus pontica. In contrast, the sections of the subgenus ''Cerris'' are exclusively native to the Old World. Legend Species with evergreen foliage ("live oaks") are tagged '#'. Species in the genus have been recategorized between deciduous and evergreen on numerous occasions, alt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castanopsis
''Castanopsis'', commonly called chinquapin or chinkapin, is a genus of evergreen trees belonging to the beech family, Fagaceae. The genus contains about 140 species, which are today restricted to tropical and subtropical eastern Asia. A total of 58 species are native to China, with 30 endemic; the other species occur further south, through Indochina to Indonesia and the Philippines, mountainous areas of Taiwan, and also in Japan. The English name chinkapin is shared with other related plants, including the golden chinkapins of the Pacific United States, which are sometimes included within ''Castanopsis'' but are more often considered a separate but very closely related genus, ''Chrysolepis''. They show many characters typical of Fagaceae. They are at least large shrubs but some species grow into sizeable trees. Their leaves are usually tough and much sclerotized and have a well-developed cuticula. Their flowers are unisexual, and the male ones are borne in erect catkins. The e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elaeocarpaceae
Elaeaocarpaceae is a family of flowering plants. The family contains approximately 615 species of trees and shrubs in 12 genera."Elaeocarpaceae" In: Klaus Kubitzki (ed.). ''The Families and Genera of Vascular Plants'' vol. VI. Springer-Verlag: Berlin;Heidelberg, Germany. (2004). The largest genera are ''Elaeocarpus'', with about 350 species, and ''Sloanea'', with about 120. The species of Elaeocarpaceae are mostly tropical and subtropical, with a few temperate-zone species. Most species are evergreen. They are found in Madagascar, Southeast Asia, Australia, New Zealand, West Indies, and South America. Plants in this family have simple leaves, usually arranged alternately, sometimes in opposite pairs or whorled often clustered at the ends of the branches, usually with a toothed edge but sometimes reduced to scales. The flowers are arranged in leaf axils, singly or in groups and are radially symmetrical. The flowers usually have both male and female organs, four or five sepals an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theaceae
Theaceae (), the tea family, is a family (biology), family of flowering plants comprising shrubs and trees, including the economically important tea plant, and the ornamental camellias. It can be described as having from seven to 40 genus, genera, depending on the source and the method of circumscription used. The family Ternstroemiaceae has been included within Theaceae;Royal Botanic Gardens, Kew. ''Vascular Plant Families and Genera''TheaceaeWatson, L., & Dallwitz, M. J. (1992 onwards). ''The families of flowering plants''/ref> however, the APG III system of 2009 places it instead in Pentaphylacaceae. Most but not all species are native species, native to China and East Asia. Family traits Plants in this family are characterized by simple leaves that are alternate spiral to distichial, serrated, and usually glossy. Most of the genera have evergreen foliage, but ''Stewartia'' and ''Franklinia'' are deciduous. The toothed margins are generally associated with a characteristic T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lauraceae
Lauraceae, or the laurels, is a plant family that includes the true laurel and its closest relatives. This family comprises about 2850 known species in about 45 genera worldwide (Christenhusz & Byng 2016 ). They are dicotyledons, and occur mainly in warm temperate and tropical regions, especially Southeast Asia and South America. Many are aromatic evergreen trees or shrubs, but some, such as ''Sassafras'', are deciduous, or include both deciduous and evergreen trees and shrubs, especially in tropical and temperate climates. The genus ''Cassytha'' is unique in the Lauraceae in that its members are parasitic vines. Most laurels are highly-poisonous. Overview The family has a worldwide distribution in tropical and warm climates. The Lauraceae are important components of tropical forests ranging from low-lying to montane. In several forested regions, Lauraceae are among the top five families in terms of the number of species present. The Lauraceae give their name to habitats know ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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