|
Ulmus Parvifolia
''Ulmus parvifolia'', commonly known as the Chinese elm or lacebark elm, is a species native to eastern Asia, including China, India, Japan, Korea, Vietnam,Fu, L., Xin, Y. & Whittemore, A. (2002)Ulmaceae in Wu, Z. & Raven, P. (eds) ''Flora of China'', Vol. 5 (Ulmaceae through Basellaceae). Science Press, Beijing, and Missouri Botanical Garden Press, St. Louis, USA; also available as Siberia, and Kazakhstan. It has been described as "one of the most splendid elms, having the poise of a graceful ''Nothofagus''".''Hilliers' Manual of Trees & Shrubs'', 4th edition, 1977, David & Charles, Newton Abbot, England Description A small to medium deciduous or semideciduous (rarely semievergreen) tree, it grows to tall and wide, with a slender trunk and crown. The leathery, lustrous green, single-toothed leaves are small, 2–5 cm long by 1–3 cm broad, and often are retained as late as December or even January in Europe and North America. In some years, the leaves take on a pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hilversum
Hilversum () is a List of cities in the Netherlands by province, city and List of municipalities of the Netherlands, municipality in the Provinces of the Netherlands, province of North Holland, Netherlands. Located in the heart of the Gooi, it is the largest urban centre in that area. It is surrounded by heathland, forest, woods, meadows, lakes and smaller towns. Hilversum is part of the Randstad, one of the largest conurbations in Europe, and the Amsterdam metropolitan area; it is about 22km southeast of Amsterdam's city centre and about 15km north of Utrecht. The city is home to several major radio, television, and newspaper companies such as ''Nederlandse Omroep Stichting''. Hilversum is thus known for being the ''mediastad'' (media city) of the Netherlands. Town Hilversum lies south-east of Amsterdam and north of Utrecht (city), Utrecht. The town is known for its architecturally important Hilversum Town Hall, Town Hall (Raadhuis Hilversum), designed by Willem Marinus Dudo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Armillaria Mellea
''Armillaria mellea'', commonly known as honey fungus, is an edible basidiomycete fungus in the genus ''Armillaria''. It is a plant pathogen and part of a cryptic species complex of closely related and Morphology (biology), morphologically similar species. It causes Armillaria root rot in many plant species and produces mushrooms around the base of trees it has infected. The symptoms of infection appear in the crowns of infected trees as discoloured foliage, reduced growth, Forest dieback, dieback of the branches and death. The mycelium is capable of producing light via bioluminescence. The mushroom is widely distributed in temperate regions of the Northern Hemisphere. It typically grows on hardwoods but may be found around and on other living and dead wood or in open areas. Taxonomy The species was originally named ''Agaricus melleus'' by Danish-Norwegian botanist Martin Vahl in 1790; it was transferred to the genus ''Armillaria'' in 1871 by Paul Kummer. Numerous Taxon, subtaxa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bath, Somerset
Bath (Received Pronunciation, RP: , ) is a city in Somerset, England, known for and named after its Roman Baths (Bath), Roman-built baths. At the 2021 census, the population was 94,092. Bath is in the valley of the River Avon, Bristol, River Avon, west of London and southeast of Bristol. The city became a UNESCO World Heritage Site in 1987, and was later added to the transnational World Heritage Site known as the "Great Spa Towns of Europe" in 2021. Bath is also the largest city and settlement in Somerset. The city became a spa with the Latin name ' ("the waters of Sulis") 60 AD when the Romans built Roman Baths (Bath), baths and a temple in the valley of the River Avon, although List of geothermal springs in the United Kingdom, hot springs were known even before then. Bath Abbey was founded in the 7th century and became a religious centre; the building was rebuilt in the 12th and 16th centuries. In the 17th century, claims were made for the curative properties of water ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kew Gardens
Kew Gardens is a botanical garden, botanic garden in southwest London that houses the "largest and most diverse botany, botanical and mycology, mycological collections in the world". Founded in 1759, from the exotic garden at Kew Park, its living collections include some of the 27,000 taxa curated by Royal Botanic Gardens, Kew, while the herbarium, one of the largest in the world, has over preserved plant and fungal specimens. The library contains more than 750,000 volumes, and the illustrations collection contains more than 175,000 prints and drawings of plants. It is one of London's top tourist attractions and is a World Heritage Sites, World Heritage Site. Kew Gardens, together with the botanic gardens at Wakehurst Place, Wakehurst in Sussex, are managed by the Royal Botanic Gardens, Kew, an internationally important botany, botanical research and education institution that employs over 1,100 staff and is a non-departmental public body sponsored by the Department for Envir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alan Mitchell (botanist)
Alan F. Mitchell (4 November 1922 – 3 August 1995) was a British forester, dendrologist and botanist, and author of several books on trees. Born in Ilford, Essex, he almost single-handedly measured every notable tree in the British Isles, founding the Tree Register of the British Isles (T.R.O.B.I.), which held records of over 100,000 individual notable trees at the time of his death. During the Second World War, he served with the Fleet Air Arm in the East Asia. Returning by troop ship in the Red Sea at the end of the war, he pondered his future and decided it would be trees. In 1976, the Royal Forestry Society of England, Wales, and Northern Ireland awarded him its Medal for Distinguished Service to Forestry (gold medal) during a Society meeting at Westonbirt. (From a tribute by Esmond Harris, ''Quarterly Journal of Forestry'', January 1996, page 67). His 1987 book ''The Guide to Trees of Canada and North America'' is dedicated to his sister Christine. The book makes occ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Texas Root Rot
Texas root rot (also known as Phymatotrichopsis root rot, Phymatotrichum root rot, cotton root rot, or, in the older literature, Ozonium root rot) is a disease that is fairly common in Mexico and the southwestern United States resulting in sudden wilt and death of affected plants, usually during the warmer months. It is caused by a soil-borne fungus named ''Phymatotrichopsis omnivora'' that attacks the roots of susceptible plants. It was first discovered in 1888 by Pammel and later named by Duggar in 1916. A monograph of this disease, which includes a historical review, was written by R.B. Streets and H.E. Bloss in 1973. Host and symptoms ''Phymatotrichopsis omnivora'' is a necrotrophic fungal pathogen that has a very broad host range, attacking almost 2000 dicotyledonous species. It inhabits alkaline, calcareous soils in southwestern United States. It particularly targets dicots as most monocots are immune. Economically important plant hosts affected by the pathogen include ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mildew
Mildew is a form of fungus. It is distinguished from its closely related counterpart, mold, largely by its colour: molds appear in shades of black, blue, red, and green, whereas mildew is white. It appears as a thin, superficial growth consisting of minute hyphae (fungal filaments) produced especially on living plants or organic matter such as wood, paper or leather. Both mold and mildew produce distinct offensive odours, and both have been identified as the cause of certain human ailments. In horticulture, mildews are species of fungus in the order Erysiphales, or fungus-like organisms in the family '' Peronosporaceae''. It is also used more generally to mean mold growth. In Old English, mildew meant honeydew (a substance secreted by aphids on leaves, formerly thought to distill from the air like dew), and later came to mean mold or fungus. Household varieties The term mildew is often used generically to refer to mold growth, usually with a flat growth habit. Molds can ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honeydew (secretion)
Honeydew is a sugar-rich sticky liquid, secreted by aphids, some scale insects, and many other true bugs and some other insects as they feed on plant sap. When their mouthpart penetrates the phloem, the sugary, high-pressure liquid is forced out of the anus of the insects, allowing them to rapidly process the large volume of sap required to extract essential nutrients present at low concentrations. Honeydew is particularly common as a secretion in hemipteran insects and is often the basis for trophobiosis. Some caterpillars of Lycaenidae butterflies and some moths also produce honeydew. In addition to various sugars, honeydew contains small amounts of amino acids, other organic compounds, and inorganic Salt (chemistry), salts with its precise makeup affected by factors such as insect species, host plant species, and whether a symbiotic organism is present. Honeydew-producing insects, like cicadas, pierce phloem ducts to access the sugar rich sap; the excess fluid released by ci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mealy Bugs
Mealybugs are insects in the family Pseudococcidae, unarmored scale insects found in moist, warm habitats. Of the more than 2,000 described species, many are considered pests as they feed on plant juices of greenhouse plants, house plants and subtropical trees and also act as a vector for several plant diseases. Some ants live in symbiotic relationships with them, protecting them from predators and feeding off the honeydew which they excrete. Description Mealybugs are sexually dimorphic: females appear as nymphs, exhibiting reduced morphology, and lack wings, although unlike many female scale insects, they often retain legs and can move. Males are smaller, gnat-like and have wings. Since mealybugs, as well as all other Hemiptera, are hemimetabolous insects, they do not undergo complete metamorphosis in the true sense of the word. However, male mealybugs exhibit a radical change during their life cycle, changing from wingless, ovoid nymphs to wasp-like flying adults. Mealybug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cottony Cushion Scale
''Icerya purchasi'' (common name: cottony cushion scale) is a scale insect that feeds on more than 80 families of woody plants, most notably on ''Citrus'' and ''Pittosporum''. Originally described in 1878 from specimens collected in New Zealand as pests of kangaroo acacia and named by W.M. Maskell "after the Rev. Dr. Purchas who, ebelieve first found it", it is now found worldwide where citrus crops are grown. The cottony cushion scale originates from Australia. Life cycle This scale infests twigs and branches. The mature hermaphrodite is oval in shape, reddish-brown with black hairs, 5 mm long. When mature, the insect remains stationary, attaches itself to the plant by waxy secretions, and produces a white egg sac in grooves, by extrusion, in the body which encases hundreds of red eggs. The egg sac will grow to be two to three times as long as the body. Newly hatched nymphs are the primary dispersal stage, with dispersion known to occur by wind and by crawling. Early s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Missouri
The University of Missouri (Mizzou or MU) is a public university, public Land-grant university, land-grant research university in Columbia, Missouri, United States. It is Missouri's largest university and the flagship of the four-campus University of Missouri System. Founded in 1839, MU was the first public university west of the Mississippi River. It has been a member of the Association of American Universities since 1908 and is classified among "R1: Doctoral Universities – Very high research activity." Enrolling 31,041 students in 2023, it offers more than 300 degree programs in thirteen major academic divisions. Its Missouri School of Journalism, founded by Walter Williams (journalist), Walter Williams in 1908, was established as the world's first journalism school; it publishes a daily newspaper, the ''Columbia Missourian'', and operates NBC affiliate KOMU-TV, KOMU. The University of Missouri Research Reactor Center is the sole source of isotopes in nuclear medicine in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
