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Rhamnus Davurica
''Rhamnus davurica'' is a species of flowering plant in the buckthorn family known by the common name Dahurian buckthorn. It is native to China, Korea, Mongolia, eastern Siberia, and Japan. It is present in North America as an introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived ther ....Zouhar, Kris. 2011''Rhamnus cathartica'', ''R. davurica''.In: Fire Effects Information System, nline U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory. Description This plant is similar to common buckthorn, but the stems are more stout and the leaves are longer. In its native range it may be up to 10 meters tall. It may also reach up to 9 meters in cultivation. The oppositely arranged leaves are up to 13 centimeters long by 6 wide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pall
Pall may refer to: * Pall (funeral), a cloth used to cover a coffin * Pall (heraldry), a Y-shaped heraldic charge * Pall (liturgy), a piece of stiffened linen used to cover the chalice at the Eucharist * Pall Corporation, a global business * Pall., author abbreviation of German naturalist Peter Simon Pallas * Pallium, a vestment pertaining to an archbishop * Pall (name) * Páll, name See also * Pail, a bucket * Pale (other) * Pall Mall (other) Pall mall, paille maille, palle malle, etc., may refer to: * Pall-mall, a lawn game related to croquet, the source of later uses Places * Pall Mall, London, a street in the City of Westminster, London * Pall Mall, a long-running farm near Tywyn ... * PAL (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhamnaceae
The Rhamnaceae are a large family of flowering plants, mostly trees, shrubs, and some vines, commonly called the buckthorn family. Rhamnaceae is included in the order Rosales. The family contains about 55 genera and 950 species. The Rhamnaceae have a worldwide distribution, but are more common in the subtropical and tropical regions. The earliest fossil evidence of Rhamnaceae is from the Late Cretaceous. Fossil flowers have been collected from the Upper Cretaceous of Mexico and the Paleocene of Argentina. Leaves of family Rhamnaceae members are simple, i.e., the leaf blades are not divided into smaller leaflets.Flowering Plants of the Santa Monica Mountains, Nancy Dale, 2nd Ed. 2000, p. 166 Leaves can be either alternate or opposite. Stipules are present. These leaves are modified into spines in many genera, in some (e.g. ''Paliurus spina-christi'' and '' Colletia cruciata'') spectacularly so. ''Colletia'' stands out by having two axillary buds instead of one, one developing int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korea National Arboretum
Korea National Arboretum () is an over-500-year-old arboretum located in Pocheon city of Gyeonggi Province of South Korea. It is widely known as "Gwangneung Forest ()" by the public. It is designated as UNESCO World Network of Biosphere Reserves, World Network of Biosphere Reserve and the country's 11th Natural monuments of South Korea, natural monument. Its history can be traced back to Joseon Dynasty. The planting of large forests started during the reign of Sejo of Joseon. He and Queen Jeonghui designated the area for a tomb which later named ''Gwangneung.'' Their tomb is one of Royal Tombs of the Joseon Dynasty, a UNESCO World Heritage Site. Following the construction of the tomb, it and its surrounding areas were designated as royal forest and kept under strict protection which lasted throughout post-Joseon history. The area was devastated during the Korean war. From 1983 to 1987, the central government went under project to develop the area as an arboretum with a forest museum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korea Forest Service
The Korea Forest Service is an independent agency specializing in forestry that is overseen by the South Korean Ministry for Food, Agriculture, Forestry and Fisheries. It is charged with maintaining South Korea's forest lands. The current minister is Kim Jae-Hyun. The headquarters of the agency is located at the Daejeon Government Complex. Overview The Korea Forest Service has the overall responsibility for establishment and implementation of forest policies and laws. The KFS consists of 5 bureaus, 22 divisions, 5 Regional Forest Services, and 27 National Forest Stations. There are KFS-affiliated agencies such as the Forest Aviation Headquarters, the Korea Forest Research Institute, the National Arboretum, and the National Natural Recreation Forest Office. The province and metropolitan cities have their local forestry administrative organizations. The Korea Forest Service is actively involved in the United Nations Convention to Combat Desertification, United Nations Framewor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Introduced Species
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately or accidentally. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are considered naturalized. The process of human-caused introduction is distinguished from biological colonization, in which species spread to new areas through "natural" (non-human) means such as storms and rafting. The Latin expression neobiota captures the characteristic that these species are ''new'' biota to their environment in terms of established biological network (e.g. food web) relationships. Neobiota can further be divided into neozoa (also: neozoons, sing. neozoon, i.e. animals) and neophyt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhamnus Cathartica
''Rhamnus cathartica'', the European buckthorn, common buckthorn, purging buckthorn, or just buckthorn, is a species of small tree in the flowering plant family Rhamnaceae. It is native to Europe, northwest Africa and western Asia, from the central British Isles south to Morocco, and east to Kyrgyzstan.Flora Europaea''Rhamnus cathartica''/ref> It was introduced to North America as an ornamental shrub in the early 19th century or perhaps before, and is now naturalized in the northern half of the continent, and is classified as an invasive plant in several US states and in Ontario, Canada. Description ''Rhamnus cathartica'' is a deciduous, dioecious shrub or small tree growing up to tall, with grey-brown bark and often thorny branches. The leaves are elliptic to oval, long and broad; they are green, turning yellow in autumn, and are arranged somewhat variably in opposite to subopposite pairs or alternately. The flowers are yellowish-green, with four petals; they are dioe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opposite Leaves
In botany, phyllotaxis () or phyllotaxy is the arrangement of leaves on a plant stem. Phyllotactic spirals form a distinctive class of patterns in nature. Leaf arrangement The basic arrangements of leaves on a stem are opposite and alternate (also known as spiral). Leaves may also be whorled if several leaves arise, or appear to arise, from the same level (at the same node) on a stem. With an opposite leaf arrangement, two leaves arise from the stem at the same level (at the same node), on opposite sides of the stem. An opposite leaf pair can be thought of as a whorl of two leaves. With an alternate (spiral) pattern, each leaf arises at a different point (node) on the stem. Distichous phyllotaxis, also called "two-ranked leaf arrangement" is a special case of either opposite or alternate leaf arrangement where the leaves on a stem are arranged in two vertical columns on opposite sides of the stem. Examples include various bulbous plants such as ''Boophone''. It also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drupe
In botany, a drupe (or stone fruit) is an indehiscent fruit in which an outer fleshy part (exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pit'', ''stone'', or '' pyrena'') of hardened endocarp with a seed (''kernel'') inside. These fruits usually develop from a single carpel, and mostly from flowers with superior ovaries (polypyrenous drupes are exceptions). The definitive characteristic of a drupe is that the hard, lignified stone is derived from the ovary wall of the flower. In an aggregate fruit, which is composed of small, individual drupes (such as a raspberry), each individual is termed a drupelet, and may together form an aggregate fruit. Such fruits are often termed ''berries'', although botanists use a different definition of ''berry''. Other fleshy fruits may have a stony enclosure that comes from the seed coat surrounding the seed, but such fruits are not drupes. Flowering plants that produce drupes include coffee, jujube, mango, oli ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invasive Species
An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native species that become harmful to their native environment after human alterations to its food webfor example the purple sea urchin (''Strongylocentrotus purpuratus'') which has decimated kelp forests along the northern California coast due to overharvesting of its natural predator, the California sea otter (''Enhydra lutris''). Since the 20th century, invasive species have become a serious economic, social, and environmental threat. Invasion of long-established ecosystems by organisms is a natural phenomenon, but human-facilitated introductions have greatly increased the rate, scale, and geographic range of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhamnus (plant)
''Rhamnus'' is a genus of about 110 accepted species of shrubs or small trees, commonly known as buckthorns, in the family Rhamnaceae. Its species range from tall (rarely to ) and are native mainly in east Asia and North America, but found throughout the temperate and subtropical Northern Hemisphere, and also more locally in the subtropical Southern Hemisphere in parts of Africa and South America. One species, the common buckthorn (''Rhamnus cathartica''), is able to flourish as an invasive plant in parts of Canada and the U.S., where it has become naturalized. Both deciduous and evergreen species occur. The leaves are simple, long, and arranged alternately, in opposite pairs, or almost paired (subopposite). One distinctive character of many buckthorns is the way the veination curves upward towards the tip of the leaf. The plant bears fruits which are black or red berry-like drupes. The name is due to the woody spine on the end of each twig in many species. One species is kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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