|
Ulmus Parvifolia 'King's Choice'
The Chinese Elm cultivar ''Ulmus parvifolia'' 'King's Choice', patented in 1985, is one of the early American selections best known for its winter hardiness, being able to withstand temperatures of -30 degrees Celsius. It was originally selected for its "outstanding growth (22 feet at 7 years)". Description Bushy in shape, the tree grows to 15 m. tall and 12 m. wide. Its leaves turn from dark green to yellow in autumn, but the cultivar lacks the attractive mottled bark for which the species is renowned. File:Ulmus parvifolia Kings choice trunk.jpg, Bark File:Ulmus parvifolia Kings choice foliage.jpg, Foliage Pests and diseases The species and its cultivars are highly resistant, but not immune, to Dutch elm disease, and unaffected by the Elm Leaf Beetle ''Xanthogaleruca luteola''. Cultivation The tree featured in the elm trialconducted by Northern Arizona University at Holbrook, eastern Arizona. 'King's Choice' is not known to be in cultivation in Europe or Australasia. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Cultivar
A cultivar is a kind of Horticulture, cultivated plant that people have selected for desired phenotypic trait, traits and which retains those traits when Plant propagation, propagated. Methods used to propagate cultivars include division, root and stem cuttings, offsets, grafting, micropropagation, tissue culture, or carefully controlled seed production. Most cultivars arise from deliberate human genetic engineering, manipulation, but some originate from wild plants that have distinctive characteristics. Cultivar names are chosen according to rules of the International Code of Nomenclature for Cultivated Plants (ICNCP), and not all cultivated plants qualify as cultivars. Horticulturists generally believe the word ''cultivar''''Cultivar'' () has two meanings, as explained in ''#Formal definition, Formal definition'': it is a classification category and a taxonomic unit within the category. When referring to a taxon, the word does not apply to an individual plant but to all plants t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Celsius
The degree Celsius is the unit of temperature on the Celsius temperature scale "Celsius temperature scale, also called centigrade temperature scale, scale based on 0 ° for the melting point of water and 100 ° for the boiling point of water at 1 atm pressure." (originally known as the centigrade scale outside Sweden), one of two temperature scales used in the International System of Units (SI), the other being the closely related Kelvin scale. The degree Celsius (symbol: °C) can refer to a specific point on the Celsius temperature scale or to a difference or range between two temperatures. It is named after the Swedish astronomer Anders Celsius (1701–1744), who proposed the first version of it in 1742. The unit was called ''centigrade'' in several languages (from the Latin ''centum'', which means 100, and ''gradus'', which means steps) for many years. In 1948, the International Committee for Weights and Measures renamed it to honor Celsius and also to rem ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Xanthogaleruca Luteola
''Xanthogaleruca luteola'', commonly known as the elm-leaf beetle, is a beetle species in the family Chrysomelidae that is native to Europe but invasive in other parts of the world.http://cisr.ucr.edu/elm_leaf_beetle.html - Center for Invasive Species Research Description The imago (adult beetle) is 6–8 mm in length, and ranges from yellow to green in colour, with a spot on its head, an hourglass mark and two spots on the pronotum, and a broad, dark stripe along the edge of each elytron. The larvae are usually black, occasionally black and yellow, with multiple rows of dots on the back and on the sides and < 13 mm long. The pupae are orange-yellow with black e. The eggs are yellow, and laid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Northern Arizona University
Northern Arizona University (NAU) is a public research university based in Flagstaff, Arizona, United States. Founded in 1899, it was the third and final university established in the Arizona Territory. It is one of the three universities governed by the Arizona Board of Regents and is accredited by the Higher Learning Commission. The university is classified among "R1: Doctoral Universities – Very high research activity". The university is divided into seven academic colleges offering about 130 undergraduate and graduate programs, and various academic certificates. Students can take classes and conduct research in Flagstaff, online, and at more than 20 statewide locations, including the Phoenix Biomedical Core research campus. As of fall 2023, 28,194 students were enrolled with 21,550 at the Flagstaff campus. NAU is ranked No. 192 in the National Science Foundation (NSF) national research rankings for fiscal year 2023. NAU's astronomy faculty led the observations of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holbrook, Arizona
Holbrook () is a city in Navajo County, Arizona, United States. According to the 2010 census, the population of the city was 5,053. The city is the county seat of Navajo County. Holbrook was founded in 1881 or 1882, when the railroad was built, and named to honor the first chief engineer of the Atlantic and Pacific Railroad, Henry Randolph Holbrook. History The Holbrook area was inhabited first by the Ancestral Puebloans, then Puebloans, then the Navajo and Apache. In 1540 Coronado searched for the Seven Cities of Cibola and camped some east of Holbrook. Coronado sent an expedition west to find the Colorado River, and they crossed the Little Colorado some east of Holbrook and found a wonderland of colors they named "El Desierto Pintada" – The Painted Desert. The expedition was then led by the Hopis to the Grand Canyon. U.S. settlements After the Mexican–American War ended in 1848 the area was ceded to the United States. From 1851 to 1857 the U.S. Army ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arizona
Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the northwest and California to the west, and shares Mexico-United States border, an international border with the Mexican states of Sonora and Baja California to the south and southwest. Its Capital city, capital and List of largest cities, largest city is Phoenix, Arizona, Phoenix, which is the most populous state capital and list of United States cities by population, fifth most populous city in the United States. Arizona is divided into 15 List of counties in Arizona, counties. Arizona is the list of U.S. states and territories by area, 6th-largest state by area and the list of U.S. states and territories by population, 14th-most-populous of the 50 states. It is the 48th state and last of the contiguous United States, contiguous states to be a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hampstead, Maryland
Hampstead is a town in Carroll County in the U.S. state of Maryland. The population was 6,323 at the 2010 census. History Between 1736 and 1738, Robert Owings was assigned to "cut a new road as Christopher Gist had marked it" south from Conewago (now Hanover, Pennsylvania) to a point about halfway to Fort Garrison in Baltimore County. The village of Spring Garden became a stage-line stop on the new road and later became the town of Hampstead, named after Hampstead, in England. The first European settlers to the area were English immigrants who made their way west from the Port of Philadelphia. They were followed by Scots and Germans. Hampstead was used by farmers from surrounding areas as a center to obtain goods brought from Baltimore and to send produce to markets in Baltimore and Pennsylvania. The level and fertile land, coupled with the availability of lime, gave farmers important advantages for successful farming. In 1879, the Harrisburg Division of the Western Maryland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maryland
Maryland ( ) is a U.S. state, state in the Mid-Atlantic (United States), Mid-Atlantic region of the United States. It borders the states of Virginia to its south, West Virginia to its west, Pennsylvania to its north, and Delaware to its east, as well as with the Atlantic Ocean to its east, and the national capital and federal district of Washington, D.C. to the southwest. With a total area of , Maryland is the List of U.S. states and territories by area, ninth-smallest state by land area, and its population of 6,177,224 ranks it the List of U.S. states and territories by population, 18th-most populous state and the List of states and territories of the United States by population density, fifth-most densely populated. Maryland's capital city is Annapolis, Maryland, Annapolis, and the state's most populous city is Baltimore. Maryland's coastline was first explored by Europeans in the 16th century. Prior to that, it was inhabited by several Native Americans in the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Arboretum
The Arnold Arboretum is a botanical research institution and free public park affiliated with Harvard University and located in the Jamaica Plain and Roslindale, Massachusetts, Roslindale neighborhoods of Boston. Established in 1872, it is the oldest public arboretum in North America. The landscape was designed by Charles Sprague Sargent and Frederick Law Olmsted and is the second largest "link" in the Emerald Necklace. The Arnold Arboretum's collection of temperate trees, shrubs, and vines has an emphasis on the plants of the eastern North America and eastern Asia, where Arboretum staff and colleagues are sourcing new material on plant collecting expeditions. The Arboretum supports research in its landscape and in its Weld Hill Research Building. History The Arboretum was founded in 1872. It was established through land and financial gifts from Benjamin Bussey and James Arnold, with trustee George Barrell Emerson facilitating its creation. Harvard appointed Charles Sprague Sar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
