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Reynoutria
''Reynoutria'' is a genus of flowering plants in the family Polygonaceae. The genus is native to eastern China, Eastern Asia and the Russian Far East, although species have been introduced to Europe and North America. Members of the genus, including '' R. japonica'' (Japanese knotweed) and its hybrid with '' R. sachalinensis'', are highly invasive plants. Description Species placed in the genus ''Reynoutria'' are robust erect perennial plants, growing from rhizomes. They are usually monoecious, with mostly bisexual flowers, but also some unisexual flowers. The petals of the flowers are dry and paperlike when mature. The fruits are achenes with threefold sharp edges. The inflorescence is in the form of a panicle. The flowers have separated triangular stigmas with fringes (fimbriate) borne on long divided styles. Taxonomy The genus ''Reynoutria'' was erected by Maarten Houttuyn in 1777 for the species ''R. japonica''. It was named in honour of Herr von Reynoutre wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reynoutria Sachalinensis 1 Beentree
''Reynoutria'' is a genus of flowering plants in the family Polygonaceae. The genus is native to eastern China, Eastern Asia and the Russian Far East, although species have been introduced to Europe and North America. Members of the genus, including '' R. japonica'' (Japanese knotweed) and its hybrid with '' R. sachalinensis'', are highly invasive plants. Description Species placed in the genus ''Reynoutria'' are robust erect perennial plants, growing from rhizomes. They are usually monoecious, with mostly bisexual flowers, but also some unisexual flowers. The petals of the flowers are dry and paperlike when mature. The fruits are achenes with threefold sharp edges. The inflorescence is in the form of a panicle. The flowers have separated triangular stigmas with fringes (fimbriate) borne on long divided styles. Taxonomy The genus ''Reynoutria'' was erected by Maarten Houttuyn in 1777 for the species ''R. japonica''. It was named in honour of Herr von Reynoutre wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reynoutria Japonica
''Reynoutria japonica'', synonyms ''Fallopia japonica'' and ''Polygonum cuspidatum'', is a species of herbaceous perennial plant in the knotweed and buckwheat family Polygonaceae. Common names include Japanese knotweed and Asian knotweed. It is native to East Asia in Japan, China and Korea. In North America and Europe, the species has successfully established itself in numerous habitats, and is classified as a pest and invasive species in several countries. Japanese knotweed has hollow stems with distinct raised nodes that give it the appearance of bamboo, though it is not related. While stems may reach a maximum height of each growing season, it is typical to see much smaller plants in places where they sprout through cracks in the pavement or are repeatedly cut down. The leaves are broad oval with a truncated base, long and broad, with an entire margin. The flowers are small, cream or white, produced in erect racemes long in late summer and early autumn. Related species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fallopia
''Fallopia'' is a genus of about 12 species of flowering plants in the buckwheat family, often included in a wider treatment of the related genus ''Polygonum'' in the past, and previously including ''Reynoutria''. The genus is native to temperate and subtropical regions of the Northern Hemisphere, but species have been introduced elsewhere. The genus includes species forming vines and shrubs. Description Species of ''Fallopia'' grow as vines, lianas, shrubs or subshrubs. Unlike species of the related genus ''Duma'', they do not have thorn-like tips to their branches. Nectaries are present outside the flowers (extrafloral). Plants usually have bisexual flowers. More rarely they may be dioecious, each plant only having flowers with either functional stamens or a functional pistil. The flowers are arranged in a raceme. The tepals of the flowers are dry and paper-like when mature. The flowers have short styles with partially fused stigmas forming a "head". The fruits are achenes wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reynoutria Sachalinensis
''Reynoutria sachalinensis'' (giant knotweed or Sakhalin knotweed Japanese オオイタドリ ''ooitadori'', Russian Горец сахалинский, Гречиха сахалинская; syns. ''Polygonum sachalinense'', ''Fallopia sachalinensis'') is a species of ''Fallopia'' native to northeastern Asia in northern Japan (Hokkaidō, Honshū) and the far east of Russia (Sakhalin and the southern Kurile Islands). ''Reynoutria sachalinensis'' is a herbaceous perennial plant growing to tall, with strong, extensively spreading rhizomes forming large clonal colonies. The leaves are some of the largest in the family, up to long and broad, nearly heart-shaped, with a somewhat wavy, crenate margin. The flowers are small, produced on short, dense panicles up to long in late summer or early autumn; it is gynodioecious, with male and female (male sterile) flowers on separate plants. The species is closely related to the Japanese knotweed, ''Reynoutria japonica'', and can be distingu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygonoideae
Polygonoideae is a subfamily of plants in the family Polygonaceae. It includes a number of plants that can be highly invasive, such as Japanese knotweed, ''Reynoutria japonica'', and its hybrid with '' R. sachalinensis'', ''R.'' × ''bohemica''. Boundaries between the genera placed in the subfamily and their relationships have long been problematic, but a series of molecular phylogenetic studies have clarified some of them, resulting in the division of the subfamily into seven tribes. Taxonomy Phylogeny A 2015 molecular phylogenetic study suggested that the genera and tribes in Polygonoideae were related as shown in the following cladogram. ''Rumex'' included ''Emex'', and ''Fallopia'' was not monophyletic, with some species placed outside the main group in the tribe Polygoneae, and some others grouping with '' Pteroxygonum'', placed in the tribe Pteroxygoneae. Genera Some of the boundaries between the genera are not settled ; in particular, ''Fallopia'' is at least paraphyle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reynoutria Multiflora
''Reynoutria multiflora'' (Synonym (taxonomy), syn. ''Fallopia multiflora'' and ''Polygonum multiflorum'') is a species of flowering plant in the buckwheat family Polygonaceae native to central and southern China. It is known by the English common names tuber fleeceflower and Chinese (climbing) knotweed. It is known as ''he shou wu'' in China and East Asia. Another name for the species is ''fo-ti'', which is a misnomer. The name ''he shou wu'' means 'the black-haired Mr. He'. It can be difficult to prevent the spread of this vining plant and to remove it once established. The leaves are thin and fragile but the stems, although narrow in diameter, can be very strong. Description ''Reynoutria multiflora'' is a herbaceous perennial plant, perennial vine growing to tall from a woody tuber. The leaf, leaves are long and broad, broad arrowhead-shaped, with an entire margin. The flowers are diameter, white or greenish-white, produced on short, dense panicles up to long in summer t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reynoutria Ciliinervis
''Reynoutria ciliinervis'' is a species of flowering plant in the family Polygonaceae, native to Korea and China – north-central China, south-central China, northeast China (Manchuria) and Qinghai. It was first described by Takenoshin Nakai in 1914 (as ''Pleuropterus ciliinervis'') and transferred to ''Reynoutria'' by Harold Norman Moldenke in 1941. It has also been placed in ''Fallopia'' and ''Polygonum ''Polygonum'' is a genus of about 130 species of flowering plant in the buckwheat and knotweed family Polygonaceae. Common names include knotweed and knotgrass (though the common names may refer more broadly to plants from Polygonaceae). In the ...''. References Polygonoideae Flora of North-Central China Flora of South-Central China Flora of Manchuria Flora of Korea Flora of Qinghai Plants described in 1941 {{Polygonaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reynoutria × Bohemica
Bohemian knotweed is a nothospecies that is a cross between Japanese knotweed and giant knotweed. It has been documented as occurring in the wild in Japan. The scientific name is accepted to be ''Reynoutria'' × ''bohemica'', but it may also be referred to as ''Fallopia'' × ''bohemica'' and ''Polygonum'' × ''bohemicum''. The species was first described by and in the Czech Republic in 1983. Description The species is an herbaceous perennial that can spread through seeds and rhizome In botany and dendrology, a rhizome (; , ) is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. Rhizomes develop from axillary buds and grow hori ...s. It can exceed 3.5 meters in height. Leaves are larger than those of Japanese knotweed, and leaf bases are less squared. White flowers typically open in August. The species can be verified by the hairs along the mid-vein on the undersides of leaves ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polygonaceae
The Polygonaceae are a family of flowering plants known informally as the knotweed family or smartweed—buckwheat family in the United States. The name is based on the genus ''Polygonum'', and was first used by Antoine Laurent de Jussieu in 1789 in his book, ''Genera Plantarum''.Antoine Laurent de Jussieu. 1789. ''Genera plantarum: secundum ordines naturales disposita, juxta methodum in Horto regio parisiensi exaratam''. page 82. Herrisant and Barrois: Paris, France. (see ''External links'' below) The name may refer to the many swollen nodes the stems of some species have, being derived from Greek, ''poly'' meaning 'many' and ''gony'' meaning 'knee' or 'joint'. Alternatively, it may have a different derivation, meaning 'many seeds'. The Polygonaceae comprise about 1200 speciesDavid J. Mabberley. 2008. ''Mabberley's Plant-Book'' third edition (2008). Cambridge University Press: UK. distributed into about 48 genera. The largest genera are ''Eriogonum'' (240 species), ''Rumex'' (20 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muehlenbeckia
''Muehlenbeckia'' or maidenhair is a genus of flowering plants in the family Polygonaceae. It is native to the borders of the Pacific, including South and North America, Papua New Guinea and Australasia. It has been introduced elsewhere, including Europe. Species vary in their growth habits, many being vines or shrubs. In some environments, rampant species can become weedy and difficult to eradicate. Description Species of ''Muehlenbeckia'' vary considerably in their growth habits; they may be perennials, vinelike, or shrubs. All have rhizomatous roots. Their leaves are arranged alternately on the stem, usually with stalks ( petioles), but sometimes stalkless (sessile). The brownish ocrea is short and tubular, soon disintegrating. The inflorescences may be terminal or axillary, and are in the form of spikes or clusters, with at most very short peduncles (flowering stems). Individual flowers have pedicels (stalks). The flowers may be bisexual or unisexual, with sometimes a mixtur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muehlenbeckia Australis
''Muehlenbeckia australis'', the large-leaved muehlenbeckia or pohuehue, is a prostrate or climbing plant native to New Zealand. Description The species grows up to tall with grey bark. The leaves are on stiff petioles and are long. Lamina is by long. It has juvenile and adult leaf forms and loses its leaves in winter. The flowers are greenish and the fruits are juicy with black shiny seeds covered by a white, succulent cup of sepals, which are fed on by various birds and lizards. Flowers bloom from late spring to autumn, with it panicles occur usually in spring and summer. Fruits are present from November to April, sometimes till June. Taxonomy The species was first described in 1786 by Georg Forster, as ''Coccoloba australis''. It was transferred to the genus ''Muehlenbeckia'' in 1841 by Carl Meissner. Some sources, including Plants of the World Online, regard ''Muehlenbeckia adpressa'' as a synonym of this species. Others treat them as separate species. Ecology ''M. aust ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plants Of The World Online
Plants of the World Online (POWO) is an online database published by the Royal Botanic Gardens, Kew. It was launched in March 2017 with the ultimate aim being "to enable users to access information on all the world's known seed-bearing plants by 2020". The initial focus was on tropical African Floras, particularly Flora Zambesiaca, Flora of West Tropical Africa and Flora of Tropical East Africa. The database uses the same taxonomical source as Kew's World Checklist of Selected Plant Families, which is the International Plant Names Index, and the World Checklist of Vascular Plants (WCVP). POWO contains 1,234,000 global plant names and 367,600 images. See also *Australian Plant Name Index *Convention on Biological Diversity *World Flora Online *Tropicos Tropicos is an online botanical database containing taxonomic information on plants, mainly from the Neotropical realm (Central, and South America). It is maintained by the Missouri Botanical Garden and was established over 25 y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
