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Elachista Bifasciella
''Elachista bifasciella'' is a moth of the family Elachistidae. It is found from Sweden to the Pyrenees, Italy and Romania and from the Netherlands to Poland. It is the type species of the genus ''Elachista''. The wingspan is . Adults are on wing in May and June. The larvae feed on ''Agrostis gigantea'', ''Agrostis stolonifera'', ''Brachypodium sylvaticum'', ''Calamagrostis arundinacea'', ''Calamagrostis varia'', ''Calamagrostis villosa'', ''Corynephorus canescens'', ''Dactylis glomerata'', ''Deschampsia cespitosa'', ''Deschampsia flexuosa'', ''Festuca gigantea'', ''Festuca ovina'', ''Festuca rubra'', ''Holcus mollis'', ''Milium effusum'' and ''Poa nemoralis''. They mine the leaves of their host plant. The mine descends from just below the leaf tip to the center of the leaf. The frass Frass refers loosely to the more or less solid excreta of insects, and to certain other related matter. Definition and etymology ''Frass'' is an informal term and accordingly it is variously u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georg Friedrich Treitschke
Georg Friedrich Treitschke (; 29 August 1776 – 4 June 1842) was a German librettist, translator and lepidopterist. He was born in Leipzig and died in Vienna. In 1800 he came to the Vienna Hofoper. From 1809 to 1814 he was principal of the Viennese Theater an der Wien. He wrote mostly librettos for Paul Wranitzky, Adalbert Gyrowetz and C. Weigl (Weisenhaus, The Orphanage), and translated many French operas into German. In 1814 he revised the libretto of ''Fidelio'' at Ludwig van Beethoven Ludwig van Beethoven (baptised 17 December 177026 March 1827) was a German composer and pianist. Beethoven remains one of the most admired composers in the history of Western music; his works rank amongst the most performed of the classic ...'s request. Entomological works * with Ochsenheimer, F. (1825): Die Schmetterlinge von Europa, Band 5/1. – Leipzig (Fleischer). XVI + 414 S. * Treitschke, F. (1825): Die Schmetterlinge von Europa, Band 5/2. – Leipzig (Fleischer). 447 + ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Calamagrostis Varia
''Calamagrostis varia'' is a species of flowering plant from the family Poaceae which is native to Europe. Description The species is perennial and caespitose with short rhizomes and erect culms which are long. It ligule have an eciliate membrane which is long and is also lacerate, and obtuse. The leaf-blades are by with the bottom being glabrous. The panicle is open, linear, is long and have scabrous branches. It fertile spikelets are lanceolate and are . They carry one fertile floret which have a hairy floret callus which is over lemma. Fertile lemma is oblong and is of the same size as a spikelet, membranous and keelless. Lemma itself have an asperulous surface and dentate apex with the main lemma having awns which are over the lemma and are geniculated and are long. The species also have glumes which are lanceolate, membranous, and are long with the upper glume having an acuminate apex. Rhachilla is long and pilose. Flowers have two lodicules and two stigmas a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frass
Frass refers loosely to the more or less solid excreta of insects, and to certain other related matter. Definition and etymology ''Frass'' is an informal term and accordingly it is variously used and variously defined. It is derived from the German word ''Fraß'', which means the food takeup of an animal.M. Clark and O. Thyen. The Oxford-Duden German Dictionary. Publisher: Oxford University Press 1999. The English usage applies to excreted residues of anything that insects had eaten, and similarly, to other chewed or mined refuse that insects leave behind. It does not generally refer to fluids such as honeydew, but the point does not generally arise, and is largely ignored in this article. Such usage in English originated in the mid-nineteenth century at the latest. Modern technical English sources differ on the precise definition, though there is little actual direct contradiction on the practical realities. One glossary from the early twentieth century speaks of "...excreme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leaf Miner
A leaf miner is any one of numerous species of insects in which the larval stage lives in, and eats, the leaf tissue of plants. The vast majority of leaf-mining insects are moths ( Lepidoptera), sawflies (Symphyta, the mother clade of wasps), and flies ( Diptera). Some beetles also exhibit this behavior. Like woodboring beetles, leaf miners are protected from many predators and plant defenses by feeding within the tissues of the leaves, selectively eating only the layers that have the least amount of cellulose. When attacking ''Quercus robur'' (English oak), they also selectively feed on tissues containing lower levels of tannin, a deterrent chemical produced in great abundance by the tree. The pattern of the feeding tunnel and the layer of the leaf being mined is often diagnostic of the insect responsible, sometimes even to species level. The mine often contains frass, or droppings, and the pattern of frass deposition, mine shape, and host plant identity are useful to de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poa Nemoralis
''Poa nemoralis'', the wood bluegrass, is a perennial plant in the family Poaceae. The late-growing grass is fairly nutritious for livestock, which feed on it in the autumn, and it is used as a lawn grass for shady situations. Description It forms loose tufts, and is of a more delicate, slender appearance than other meadow grasses. It is slightly creeping. The leaves are narrow, tapering to a point. The ligules are short (0.5 mm). The stem is slender, high. The panicle is slender, loose and branched. The spikelets are few and egg shaped. They have one to five flowers. This grass is in flower from June to August in the Northern Hemisphere. It can produce asexual seeds by means of apomixis and can also reproduce vegetatively. Because of the characteristic lamina, similar to a stretched out arm, it is sometimes called "Wegweisergras" (signpost grass) in Germany. Distribution and habitat Wood bluegrass is native to Europe, where its range extends from Portugal to Bulgar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Milium Effusum
''Milium effusum'', the American milletgrass or wood millet, is a species of flowering plant in the grass family Poaceae, native to damp forests of the Holarctic Kingdom. The Latin specific epithet ''effusum'' means "spreading loosely". Habitat ''Milium effusum'' inhabits damp, deciduous woods and shaded banks, where it grows on winter-wet, calcareous to mildly acidic clay and loam soils, and also over rocks in western Scotland. Distribution It can be found in the northern United States and Canada, and Europe, including Britain but excluding the Mediterranean, east to Siberia and the Himalayas. Cultivation The yellow-leaved cultivar 'Aureum', known as Bowles' golden grass, is cultivated as an ornamental garden plant, and in the UK has won the Royal Horticultural Society’s Award of Garden Merit The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performanc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holcus Mollis
''Holcus mollis'', known as creeping soft grass or creeping velvet grass, is a species of grass, native to Europe and western Asia. Description ''Holcus mollis'' is a rhizomatous perennial grass found in woods and hedgerows, growing to tall. It has rhizomes that occur around deep in soil or sometimes deeper. Rhizome growth occurs in the period May to November but is fastest from mid-June to mid-July. The rhizomes have many dormant buds that do not develop unless the rhizomes are disturbed and then fresh aerial shoots may arise from the broken fragments. It flowers from June to July. The main distinguishing characteristics from '' H. lanatus'' are the presence of rhizomes, and the bearded nodes or 'hairy knees' on the culm. Habitat ''Holcus mollis'' is favoured by conditions in woodland clearings and at the early stages of coppicing. Growth and flowering are restricted as the tree canopy develops. It is often a relict of former woodland vegetation, surviving in open grass ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Festuca Rubra
''Festuca rubra'' is a species of grass known by the common name red fescue or creeping red fescue. It is widespread across much of the Northern Hemisphere and can tolerate many habitats and climates. It is best adapted to well-drained soils in cool, temperate climates; it prefers shadier areas and is often planted for its shade tolerance. Wild animals browse it, but it has not been important for domestic forage due to low productivity and palatability. It is also an ornamental plant for gardens. Description ''Festuca rubra'' is perennial and has sub-species that have rhizomes and/or form bunchgrass tufts. It mainly exists in neutral and acidic soils. It can grow between 2 and 20 cm tall. Like all fescues, the leaves are narrow and needle like, making it less palatable to livestock. The swards that it forms are not as tufted as sheep's fescue (''Festuca ovina'') or wavy hair grass (''Deschampsia flexuosa''). The tufted nature is what gives the grass its springy characteri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Festuca Ovina
''Festuca ovina'', sheep's fescue or sheep fescue, is a species of grass. It is sometimes confused with hard fescue (''Festuca trachyphylla''). General description It is a perennial plant sometimes found in acidic ground, and in mountain pasture, throughout Europe (with the exception of some Mediterranean areas) and eastwards across much of Asia; it has also been introduced to North America. It is one of the defining species of the British NVC community CG2, i.e. ''Festuca ovina'' – '' Avenula pratensis'' grassland, one of the calcicolous grassland communities. However, the species has a wide ecological tolerance in the UK, occurring on both basic and acid soils, as well as old mining sites and spoil heaps that are contaminated with heavy metals. Sheep's fescue is a densely tufted perennial grass. Its greyish-green leaves are short and bristle-like. The panicles are both slightly feathery and a bit one-sided. It flowers from May until June, and is wind-pollinated. It has no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Festuca Gigantea
''Festuca gigantea'', or giant fescue, is a plant species in the grass family, Poaceae. Because this and other members of ''Festuca'' subgenus ''Schedonorus'' have more in common morphologically with members of the genus ''Lolium ''Lolium'' is a genus of tufted grasses in the bluegrass subfamily (Pooideae). It is often called ryegrass, but this term is sometimes used to refer to grasses in other genera. They are characterized by bunch-like growth habits. ''Lolium'' is ...'' than with ''Festuca'' and often produce fertile hybrids with other ''Lolium'' species, ''Festuca gigantea'' has been recently published as ''Lolium giganteum'' and then as ''Schedonorus giganteus'' . Sources vary as to which placement is more acceptable. Description This grass can grow up to 2 metres. It is loosely tufted, hairless, and has auricles. It has dark red-purple leaf nodes, and there are six 8–13 mm long spikelets. Festuca Gigantea have long awns, forming flowers during th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deschampsia Flexuosa
''Deschampsia flexuosa'', commonly known as wavy hair-grass, is a species of bunchgrass in the grass family widely distributed in Eurasia, Africa, South America, and North America. Description Wavy hair-grass, ''Deschampsia flexuosa'', has wiry leaves and delicate, shaking panicles formed of silvery or purplish-brown flower heads on wavy, hair-like stalks. The leaves are bunched in tight tufts with plants forming a very tussocky, low sward 5 to 20 cm tall before flowering, to 30 cm high. File:Deschampsia flexuosa.jpg, Illustration of ''D. flexuosa'' (including '' D. caespitosa'') File:Avenella flexuosa.jpg, Mature inflorescence Distribution and habitat ''Deschampsia flexuosa'' is found naturally in dry grasslands and on moors and heaths. It is also an important component of the ground flora of birch and oak woodland. The plant has a preference for acidic, free-draining soil, and avoids chalk and limestone areas. It can exist over above sea level. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deschampsia Cespitosa
''Deschampsia cespitosa'', commonly known as tufted hairgrass or tussock grass, is a perennial tufted plant in the grass family Poaceae. Distribution of this species is widespread including the eastern and western coasts of North America, parts of South America, Eurasia and Australia. The species is cultivated as an ornamental garden plant, and numerous cultivars are available. The cultivars 'Goldschleier' and 'Goldtau' have gained the Royal Horticultural Society's Award of Garden Merit. It is a larval host to the Juba skipper and the umber skipper. Description A distinguishing feature is the upper surface of the leaf blade which feels rough and can cut in one direction, but is smooth in the opposite direction. The dark green upper sides of the leaves are deeply grooved. It can grow to tall, and has a long, narrow, pointed ligule. It flowers from June until August. It can be found on all types of grassland, although it prefers poorly drained soil. It forms a major componen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
