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Knapweed
''Centaurea'' () is a genus of over 700 species of herbaceous thistle-like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding regions are particularly species-rich. Common names Common names for this genus are centaury, centory, starthistles, knapweeds, centaureas and the more ambiguous "bluets"; a vernacular name used for these plants in parts of England is "loggerheads" ( common knapweed). The ''Plectocephalus'' group – possibly a distinct genus – is known as basketflowers. "Cornflower" is used for a few species, but that term more often specifically means either '' C. cyanus'' (the annual cornflower) or '' Centaurea montana'' (the perennial cornflower). The common name "centaury" is sometimes used, although this also refers to the unrelated plant genus '' Centaurium''.Keil (2006), Keil & Ochsmann (2006). The name is said to be in reference to Chir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurea Nigra-floro
''Centaurea'' () is a genus of over 700 species of herbaceous thistle-like flowering plants in the family Asteraceae. Members of the genus are found only north of the equator, mostly in the Eastern Hemisphere; the Middle East and surrounding regions are particularly species-rich. Common names Common names for this genus are centaury, centory, starthistles, knapweeds, centaureas and the more ambiguous "bluets"; a vernacular name used for these plants in parts of England is "loggerheads" ( common knapweed). The ''Plectocephalus'' group – possibly a distinct genus – is known as basketflowers. "Cornflower" is used for a few species, but that term more often specifically means either '' C. cyanus'' (the annual cornflower) or '' Centaurea montana'' (the perennial cornflower). The common name "centaury" is sometimes used, although this also refers to the unrelated plant genus '' Centaurium''.Keil (2006), Keil & Ochsmann (2006). The name is said to be in reference to Chiro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Knapweed
''Centaurea nigra'' is a species of flowering plant in the family Asteraceae, and is also known as lesser knapweed, common knapweed, black knapweed and bell weed. It is native to central Europe, and has been introduced to temperate North America and Australasia, where it is usually regarded as a noxious weed due to its fast spread, hardiness and competitive potential. Description ''Centaurea nigra'' is an upright herbaceous perennial plant, perennial growing up to c. 1 m (3.3 ft) in height. It produces spreading Rhizome, rhizomes. ''C. nigra'' initially produces a basal Rosette (botany), rosette of leaves, which are usually Glossary of leaf morphology, entire and up to 30 cm long (11.8 in). Once the rosette is fully formed, it produces upright stems before eventually dying away. These upright stems turn purple when mature. The leaves on these stems are smaller, 1-8 mm x 2-10 mm, usually entire, grey-green and roughly hairy. The inflorescence is globe-shaped, 10-20 mm x 30-40 m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurea Montana
''Centaurea montana'', the perennial cornflower, mountain cornflower, bachelor's button, montane knapweed or mountain bluet, is a species of flowering plant in the family Asteraceae, endemic to Europe. It is widespread and common in the more southerly mountain ranges of Europe, but is rarer in the north. It escapes from gardens readily, and has thereby become established in the British Isles, Scandinavia and North America. This plant has become an invasive species in British Columbia, Canada. ''Centaurea montana'' grows in meadows and open woodland in the upper montane and sub-alpine zones, in basic areas. It grows to tall, and flowers mainly from May to August. ''Centaurea montana'' may be distinguished from other ''Centaurea'' species in the region by its usually entire leaves, and the blue-purple colour of the outermost ray florets. It may be distinguished from the cornflower, ''Centaurea cyanus'', by having a single (rarely up to three) flower heads, and by its being perenn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Disk Flower
Asteraceae () is a large family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the order Asterales. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger family is unclear as the quantity of extant species in each family is unknown. The Asteraceae were first described in the year 1740 and given the original name Compositae. The family is commonly known as the aster, daisy, composite, or sunflower family. Most species of Asteraceae are herbaceous plants, and may be annual, biennial, or perennial, but there are also shrubs, vines, and trees. The family has a widespread distribution, from subpolar to tropical regions, in a wide variety of habitats. Most occur in hot desert and cold or hot semi-desert climates, and they are found on every continent but Antarctica. Their common primary characteristic is compound flower heads, technically known as capitula, consisting of sometimes hundreds o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asteraceae
Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger family is unclear as the quantity of Extant taxon, extant species in each family is unknown. The Asteraceae were first described in the year 1740 and given the original name Composita, Compositae. The family is commonly known as the aster, Daisy (flower), daisy, composite, or sunflower family. Most species of Asteraceae are herbaceous plants, and may be Annual plant, annual, Biennial plant, biennial, or Perennial plant, perennial, but there are also shrubs, vines, and trees. The family has a widespread distribution, from subpolar to tropical regions, in a wide variety of habitats. Most occur in Hot desert climate, hot desert and cold or hot Semi-arid climate, semi-desert climates, and they are found on ever ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurea Paniculata
''Centaurea paniculata'', the Jersey knapweed, is a species of ''Centaurea'' found in France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ... and northern Italy. References External links * * paniculata {{Cynareae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesotrophic Grasslands In The British National Vegetation Classification System
The mesotrophic grassland communities in the British National Vegetation Classification system were described in Volume 3 of '' British Plant Communities'', first published in 1992, along with the calcicolous grassland communities and the calcifugous grasslands and montane communities. In total, 13 mesotrophic grassland communities have been identified: * two communities in which False Oat-grass is the characteristic grass species (one of these, community MG1, is widespread throughout Britain; the other, MG2, is confined to northern England England is a Countries of the United Kingdom, country that is part of the United Kingdom. It is located on the island of Great Britain, of which it covers about 62%, and List of islands of England, more than 100 smaller adjacent islands. It ...). * four communities of well-drained permanent pastures and meadows, two of which ( MG5 and MG6) are widespread and the other two ( MG3 and MG4) more localised * a single community ( MG7) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cock's-foot
''Dactylis'' is a genus of Eurasian and North African plants in the Pooideae, bluegrass subfamily within the Poaceae, grass family. ''Dactylis'' is native to North Africa, they are found throughout the world, and are an invasive species. They are known in English as cock's-foot or cocksfoot grasses, also sometimes as orchard grasses. Taxonomy The genus has been treated as containing only a single species ''Dactylis glomerata'' by many authors, treating variation in the genus at only subspecific rank within ''D. glomerata'',Flora Europaea''Dactylis glomerata''Flora of China Town''Dactylis''/ref> but more recently, there has been a trend to accept two species,Germplasm Resources Information NetworkSpecies Records of ''Dactylis'' while some authors accept even more species in the genus, particularly endemism, island endemic species in Macaronesia.Schönfelder, P., & Ludwig, D. (1996). Dactylis metlesicsii (Poaceae), eine neue Art der Gebirgsvegetation von Tenerife, Kanarische Inseln ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crested Dog's-tail
''Cynosurus cristatus'', the crested dog's-tail, is a short-lived perennial grass in the family Poaceae, characterised by a seed head that is flat on one side. It typically grows in species rich grassland. It thrives in a variety of soil types but avoids the acid and calcareous extremes of pH, and prefers well drained soils. retrieved 10 December 2010. It may be grown as an ornamental plant. Description 
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Taproot
A taproot is a large, central, and dominant root from which other roots sprout laterally. Typically a taproot is somewhat straight and very thick, is tapering in shape, and grows directly downward. In some plants, such as the carrot, the taproot is a storage organ so well developed that it has been cultivated as a vegetable. The taproot system contrasts with the adventitious- or fibrous-root system of plants with many branched roots, but many plants that grow a taproot during germination go on to develop branching root structures, although some that rely on the main root for storage may retain the dominant taproot for centuries—for example, ''Welwitschia''. Description Dicots, one of the two divisions of flowering plants (angiosperms), start with a taproot, which is one main root forming from the enlarging radicle of the seed. The tap root can be persistent throughout the life of the plant but is most often replaced later in the plant's development by a fibrous root system. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
