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Centaurium Pulchellum
''Centaurium pulchellum '' is a species of flowering plant in the gentian family known by the common name lesser centaury, or slender centaury. It differs from ''Centaurium erythraea'' by lacking basal rosette of leaves and by having a developed peduncle below the flowers. It is often much smaller, less than ten centimetres. It is native to the southern temperate parts of Europe. Description Lesser centaury is an erect annual herb branching from the base, often less than tall, and much smaller than common centaury (''Centaurium erythraea''). Sometimes it is reduced to a single stem with one flower. By the time it flowers, from June to September, there is no basal rosette. The leafy stem has opposite pairs of narrow oval leaves. The inflorescence is a group of a few pale pink star-like flowers, each with a short stalk, a tube and five narrow petals, about across, flat-faced with yellow anthers. Like other members of the family, the flowers close in the afternoon. The calyx is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gentianaceae
Gentianaceae is a family of flowering plants of 103 genera and about 1600 species. Etymology The family takes its name from the genus '' Gentiana'', named after the Illyrian king Gentius. Distribution Distribution is cosmopolitan. Characteristics The family consists of trees, shrubs and herbs showing a wide range of colours and floral patterns. Flowers are actinomorphic and bisexual with fused sepals and petals. The stamens are attached to the inside of the petals ( epipetalous) and alternate with the corolla lobes. There is a glandular disk at the base of the gynoecium, and flowers have parietal placentation. The inflorescence is cymose, with simple or complex cymes. The fruits are dehiscent septicidal capsules splitting into two halves, rarely some species have a berry. Seeds are small with copiously oily endosperms and a straight embryo. The habit varies from small trees, pachycaul shrubs to (usually) herbs, with ascending, erect or twining stems. Plants are usually ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurium Erythraea
''Centaurium erythraea'' is a species of flowering plant in the gentian family known by the common names common centaury and European centaury. Description This is an erect biennial herb which reaches half a meter in height. It grows from a small basal rosette and bolts a leafy, erect stem which may branch. The triangular leaves are arranged oppositely on the stem and the erect inflorescences emerge from the stem and grow parallel to it, sometimes tangling with the foliage. Each inflorescence may contain many flowers. The petite flower is pinkish-lavender and about a centimeter across, flat-faced with yellow anthers. The fruit is a cylindrical capsule. It flowers from June until September. Distribution This centaury is a widespread plant of Europe (including Scotland, Sweden and Mediterranean countries) and parts of western Asia and northern Africa. It has also naturalised in parts of North America, New Zealand, and eastern Australia, where it is an introduced species. Taxono ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peduncle (botany)
In botany, a peduncle is a stalk supporting an inflorescence or a solitary flower, or, after fecundation, an infructescence or a solitary fruit. The peduncle sometimes has bracts (a type of cataphylls) at nodes. The main axis of an inflorescence above the peduncle is the rachis. There are no flowers on the peduncle but there are flowers on the rachis. When a peduncle arises from the ground level, either from a compressed aerial stem or from a subterranean stem (rhizome, tuber, bulb, corm), with few or no bracts except the part near the rachis or receptacle, it is referred to as a scape. The acorns of the pedunculate oak are borne on a long peduncle, hence the name of the tree. See also *Pedicel (botany) *Scape (botany) In botany, a scape is a peduncle arising from a subterranean or very compressed stem, with the lower internodes very long and hence few or no bracts except the part near the rachis or receptacle. Typically it takes the form of a long, leafles ... Re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern. The stem holding the whole inflorescence is called a peduncle. The major axis (incorrectly referred to as the main stem) above the peduncle bearing the flowers or secondary branches is called the rachis. The stalk of each flower in the inflorescence is called a pedicel. A flower that is not part of an inflorescence is called a solitary flower and its stalk is al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stamen
The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filament and an anther which contains ''sporangium, microsporangia''. Most commonly anthers are two-lobed and are attached to the filament either at the base or in the middle area of the anther. The sterile tissue between the lobes is called the connective, an extension of the filament containing conducting strands. It can be seen as an extension on the dorsal side of the anther. A pollen grain develops from a microspore in the microsporangium and contains the male gametophyte. The stamens in a flower are collectively called the androecium. The androecium can consist of as few as one-half stamen (i.e. a single locule) as in ''Canna (plant), Canna'' species or as many as 3,482 stamens which have been counted in the saguaro (''Carnegiea gigantea'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marl Pit
Marl is an earthy material rich in carbonate minerals, clays, and silt. When hardened into rock, this becomes marlstone. It is formed in marine or freshwater environments, often through the activities of algae. Marl makes up the lower part of the cliffs of Dover, and the Channel Tunnel follows these marl layers between France and the United Kingdom. Marl is also a common sediment in post-glacial lakes, such as the marl ponds of the northeastern United States. Marl has been used as a soil conditioner and neutralizing agent for acid soil and in the manufacture of cement. Description Marl or marlstone is a carbonate-rich mud or mudstone which contains variable amounts of clays and silt. The term was originally loosely applied to a variety of materials, most of which occur as loose, earthy deposits consisting chiefly of an intimate mixture of clay and calcium carbonate, formed under freshwater conditions. These typically contain 35–65% clay and 65–35% carbonate. The ter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morecambe Bay
Morecambe Bay is a large estuary in northwest England, just to the south of the Lake District National Park. It is the largest expanse of intertidal mudflats and sand in the United Kingdom, covering a total area of . In 1974, the second largest gas field in the UK was discovered west of Blackpool, with original reserves of over 7 trillion cubic feet (tcf) (200 billion cubic metres). At its peak, 15% of Britain's gas supply came from the bay but production is now in decline. It is also one of the homes of the high brown fritillary butterfly. Natural features The rivers Leven, Kent, Keer, Lune and Wyre drain into the Bay, with their various estuaries making a number of peninsulas within the bay. Much of the land around the bay is reclaimed, forming salt marshes used in agriculture. Morecambe Bay is also an important wildlife site, with abundant birdlife and varied marine habitats, and there is a bird observatory at Walney Island. The bay has rich cockle beds, which have been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juncus Gerardii
''Juncus gerardii'', commonly known as blackgrass, black needle rush or saltmarsh rush, is a flowering plant in the rush family Juncaceae. Distribution ''Juncus gerardii'' is mainly a coastal species, occurring at the high tide mark on the Mediterranean, Atlantic, Baltic and Black sea shorelines of Europe and the east coast of North America ''Juncus gerardii'' is one of the many species identified by Eric Hultén as amphi-Atlantic plants, meaning that they have a disjunct distribution on both sides of the Atlantic, but are absent on the Pacific side of the globe. It also occurs inland in parts of eastern Europe, west and central Asia, particularly on saline soils. In North America it occurs along the shorelines of areas once flooded by the sea, and as a weed along railway lines, for example in Minnesota. In Indiana, it is the only ''Juncus'' species found in the Tipton Till Plain, a Till Plain Till plains are an extensive flat plain of glacial till that forms when a sheet of i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juncus Maritimus
''Juncus maritimus'', known as the sea rush, is a species of rush that grows on coastlines. It is sometimes considered conspecific with '' Juncus kraussii''. It has a wide distribution across the western Palearctic realm (all of Europe, western Asia and the Maghreb). According to Edward Catich Edward M. Catich (1906–April 14, 1979) was an American Roman Catholic priest, teacher, and calligrapher. He is noted for the fullest development of the thesis that the inscribed Roman square capitals of the Augustan age and afterward owed their ... the ancient Egyptians used ''Juncus maritimus'' as a brush for writing. He describes the process of making one: “the end of which he rushwas cut at a slant and its fibers split by chewing to produce a small chisel-shaped ‘brush‘.”. References External links maritimus Plants described in 1789 Taxa named by Jean-Baptiste Lamarck Flora of Europe Flora of Sweden {{Poales-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blysmus Rufus
''Blysmus rufus'' is a species of sedge The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus '' Carex'' ... belonging to the family Cyperaceae. Its native range is Europe to Mongolia, Subarctic America to Canada. References Cyperaceae {{cyperaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eleocharis Quinqueflora
''Eleocharis quinqueflora'' is a species of spikesedge known by the common names fewflower spikerush and few-flowered spike-rush. It is widespread across Europe, North Africa, northern Asia (Siberia, China, Kazakhstan, Himalayas, etc.), and North America (Canada, Greenland, northern and western US). There are also isolated populations in Argentina and Chile. ''Eleocharis quinqueflora''is a resident of wet meadows, bogs, hot springs, and other moist places. This is a rhizomatous perennial approaching a maximum height of 40 centimeters. The thin, flattened stems are surrounded by papery reddish to green leaf sheaths and topped with dark inflorescences. The spikelet is lance-shaped to oval and less than a centimeter long. It contains two to seven flowers, each of which is covered with a brown or black bract. The fruit is a yellow-brown achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Centaurium
''Centaurium'' (centaury) is a genus of 20 species in the gentian family (Gentianaceae), tribe Chironieae, subtribe Chironiinae. The genus was named after the centaur Chiron, famed in Greek mythology for his skill in medicinal herbs. It is distributed across Europe and into Asia. Until 2004, ''Centaurium'' was given a much wider circumscription, comprising about 50 species ranging across Europe, Asia, the Americas, Australasia and the Pacific. However this circumscription was polyphyletic, so in 2004 the genus was split in four, being ''Centaurium'' sensu stricto, ''Zeltnera'', ''Gyrandra'' and '' Schenkia''. Species * '' Centaurium barrelieri'' (Duf.) F. Q. & Rothm. * '' Centaurium bianoris'' (Sennen) Sennen * '' Centaurium calycosum'' (Buckley) Fernald * '' Centaurium capense'' Broome * '' Centaurium centaurioides'' (Roxb.) Rolla Rao & Hemadri * '' Centaurium chloodes'' (Brot.) Samp. * '' Centaurium davyi'' (Jeps.) Abrams * ''Centaurium erythraea'' Rafn * '' Centaurium exalt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
