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River Farm
River Farm (), currently home to the American Horticultural Society (AHS) headquarters, is a () landscape located at 7931 East Boulevard Drive, Alexandria, Virginia. The estate takes its name from a larger plot of land which formed an outlying part of George Washington's Mount Vernon estate. History The River Farm property was established in 1653–54 by Giles Brent and his wife, Mary Kittamaquund, a princess of the Piscataway tribe. Brent received a grant of named Piscataway Neck. In 1739 his successor George Brent transferred the property to his brother-in-law William Clifton, who renamed the property Clifton's Neck. In 1757 Clifton completed the brick house that now serves as AHS headquarters. Following financial difficulties, Clifton sold the land to neighbor, founding father George Washington, who obtained the property for £1,210 through a bankruptcy sale in 1760. Washington changed the name of Clifton's Neck to River Farm and leased the property to tenant farmers. Ri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Farm Early Fall 2010 (5105616904)
A river is a natural flowing watercourse, usually freshwater, flowing towards an ocean, sea, lake or another river. In some cases, a river flows into the ground and becomes dry at the end of its course without reaching another body of water. Small rivers can be referred to using names such as creek, brook, rivulet, and rill. There are no official definitions for the generic term river as applied to geographic features, although in some countries or communities a stream is defined by its size. Many names for small rivers are specific to geographic location; examples are "run" in some parts of the United States, "burn" in Scotland and northeast England, and "beck" in northern England. Sometimes a river is defined as being larger than a creek, but not always: the language is vague. Rivers are part of the water cycle. Water generally collects in a river from precipitation through a drainage basin from surface runoff and other sources such as groundwater recharge, springs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lewis And Clark Expedition
The Lewis and Clark Expedition, also known as the Corps of Discovery Expedition, was the United States expedition to cross the newly acquired western portion of the country after the Louisiana Purchase. The Corps of Discovery was a select group of U.S. Army and civilian volunteers under the command of Captain Meriwether Lewis and his close friend Second Lieutenant William Clark. Clark and 30 members set out from Camp Dubois, Illinois, on May 14, 1804, met Lewis and ten other members of the group in St. Charles, Missouri, then went up the Missouri River. The expedition crossed the Continental Divide of the Americas near the Lemhi Pass, eventually coming to the Columbia River, and the Pacific Ocean in 1805. The return voyage began on March 23, 1806, at Fort Clatsop, Oregon, and ended on September 23 of the same year. President Thomas Jefferson commissioned the expedition shortly after the Louisiana Purchase in 1803 to explore and to map the newly acquired territory, to fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metasequoia Glyptostroboides
''Metasequoia glyptostroboides'', the dawn redwood, is a fast-growing, endangered deciduous conifer. It is the sole living species of the genus ''Metasequoia'', one of three genera in the subfamily Sequoioideae of the family Cupressaceae. It now survives only in wet lower slopes and montane river and stream valleys in the border region of Hubei and Hunan provinces and Chongqing municipality in south-central China, notably in Lichuan county in Hubei. Although the shortest of the redwoods, it can grow to in height. In 1941, the genus ''Metasequoia'' was reported by paleobotanist Shigeru Miki as a widely distributed extinct genus based on fossils, before attracting considerable attention a few years later when small populations were found alive in central China. It is a particularly well-known example of a living fossil species. The tree faces considerable risks of extinction in its wild range due to deforestation, however it has been planted extensively in arboreta worldwide, whe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cornus (genus)
''Cornus'' is a genus of about 30–60 species of woody plants in the family Cornaceae, commonly known as dogwoods, which can generally be distinguished by their blossoms, berries, and distinctive bark. Most are deciduous trees or shrubs, but a few species are nearly herbaceous perennial subshrubs, and some species are evergreen. Several species have small heads of inconspicuous flowers surrounded by an involucre of large, typically white petal-like bracts, while others have more open clusters of petal-bearing flowers. The various species of dogwood are native throughout much of temperate and boreal Eurasia and North America, with China, Japan, and the southeastern United States being particularly rich in native species. Species include the common dogwood ''Cornus sanguinea'' of Eurasia, the widely cultivated flowering dogwood ''(Cornus florida)'' of eastern North America, the Pacific dogwood ''Cornus nuttallii'' of western North America, the Kousa dogwood ''Cornus kousa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Nigra
''Betula nigra'', the black birch, river birch or water birch, is a species of birch native to the Eastern United States from New Hampshire west to southern Minnesota, and south to northern Florida and west to Texas. It is one of the few heat-tolerant birches in a family of mostly cold-weather trees which do not thrive in USDA Zone 6 and up. ''B. nigra'' commonly occurs in floodplains and swamps. Description ''Betula nigra'' is a deciduous tree growing to with a trunk in diameter. The base of the tree is often divided into multiple slender trunks. Bark Bark characteristics of the river birch differ during its youth stage, maturation, and old growth. The bark of a young river birch can vary from having a salmon-pink to brown-gray tint and can be described as having loose layers of curling, paper thin scales. As the tree matures, the salmon-pink color is exchanged for a reddish-brown with a dark grey base color. The scales on a mature tree lack the loose curling and are closely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Azalea
Azaleas are flowering shrubs in the genus '' Rhododendron'', particularly the former sections '' Tsutsusi'' (evergreen) and '' Pentanthera'' (deciduous). Azaleas bloom in the spring (April and May in the temperate Northern Hemisphere, and October and November in the Southern Hemisphere), their flowers often lasting several weeks. Shade tolerant, they prefer living near or under trees. They are part of the family Ericaceae. Cultivation Plant enthusiasts have selectively bred azaleas for hundreds of years. This human selection has produced over 10,000 different cultivars which are propagated by cuttings. Azalea seeds can also be collected and germinated. Azaleas are generally slow-growing and do best in well-drained acidic soil (4.5–6.0 pH). Fertilizer needs are low. Some species need regular pruning. Azaleas are native to several continents including Asia, Europe and North America. They are planted abundantly as ornamentals in the southeastern US, southern Asia, and par ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buxus Sempervirens
''Buxus sempervirens'', the common box, European box, or boxwood, is a species of flowering plant in the genus ''Buxus'', native to western and southern Europe, northwest Africa, and southwest Asia, from southern England south to northern Morocco, and east through the northern Mediterranean region to Turkey.Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins .British Trees''Buxus sempervirens'' '' Buxus colchica'' of western Caucasus and ''B. hyrcana'' of northern Iran and eastern Caucasus are commonly treated as synonyms of ''B. sempervirens''.Med-Checklist''Buxus colchica'' Ww2.bgbm.org Description ''Buxus sempervirens'' is an evergreen shrub or small tree growing up to 1 to (3 to ) tall, with a trunk up to in diameter (exceptionally to 10 m tall and 45 cm diameter). Arranged in opposite pairs along the stems, the leaves are green to yellow-green, oval, 1.5–3 cm long, and 0.5–1.3 cm broad. The hermaphrodite flowers are inconspicuous but highl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Halesia Carolina
''Halesia carolina'', commonly called Carolina silverbell or little silverbell, is a species of flowering plant in the family Styracaceae, native to the southeastern United States. Description It is a vigorous, fast-growing deciduous shrub or tree growing to tall by broad, bearing masses of pendent, bell-shaped white flowers which appear in spring before the leaves. The flowers are followed by green, four-winged fruit. The leaves turn yellow in autumn. Range The range of little silverbells is very restricted. It is principally in the panhandle of Florida, with isolated smaller outlier populations in South Carolina, Georgia, Alabama, Mississippi. In the cited reference, this species is referred to as ''Halesia parviflora''. The "champion" ''Halesia carolina'' on the 2015 American Forests' National Register of Champion Trees is quite removed from its natural range, being situated in Roxbury, New Hampshire. Taxonomy There is a great deal of confusion in the four-winged Ame ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fothergilla Gardenii
''Fothergilla gardenii'', also known by the common names witch alder,Brickell, Christopher "The Royal Horticultural Society A-Z of Garden Plants (Volume 1: A-J)", 3rd ed. Copyright 1996, 2003, 2008 Dorling Kindersley Ltd., London. pp. 452-453 dwarf fothergilla,Hogan, Sean, chief consultant. 2003, 2004. "Flora A Gardener's Encyclopedia", Global Nook Publishing Pty Ltd, Timber Press. . pp. 608 American wych hazel,Gledhill, David (2008). "The Names of Plants". Cambridge University Press. (hardback), (paperback). pp 169, 175 and dwarf witchalder is a deciduous shrub in the Hamamelidaceae family. It is one of two species in the genus ''Fothergilla.'' Description *Type: Slow-growing deciduous shrub. *Height/spread: Max height and spread is 0.9 m (3 ft) to 1 m (3 ft). *Leaves: Dark green, alternate leaves emerge in spring and range in shape from oval to obovate. Sizes up to 6 cm (2.5 in) in length, with irregularly toothed margins. Striking autumn colors ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chionanthus Virginicus
''Chionanthus virginicus'' (white fringetree) is a tree native to the savannas and lowlands of the southeastern United States, from New Jersey south to Florida, and west to Oklahoma and Texas.USDA Woody Plant Seed Manual''Chionanthus virginicus'' (pdf file) Growth It is a deciduous shrub or small tree growing to as much as tall, though ordinarily less. The bark is scaly, brown tinged with red. The shoots are light green, downy at first, later becoming light brown or orange. The buds are light brown, ovate, acute, long. The leaves are opposite, simple, ovate or oblong, long and broad, with a petiole long, and an entire margin; they are hairless above, and finely downy below, particularly along the veins, and turn yellow in fall. The richly-scented flowers have a pure white, deeply four-lobed corolla, the lobes thread-like, long and broad; they are produced in drooping axillary panicles long when the leaves are half grown, in mid- to late May in New York City, ear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amelanchier Laevis
''Amelanchier laevis'', the smooth shadbush, smooth serviceberry or Allegheny serviceberry, is a North American species of tree in the rose family Rosaceae, growing up to tall. It is native to eastern Canada and the eastern United States, from Newfoundland west to Ontario, Minnesota, and Iowa, south as far as Georgia and Alabama. Description ''Amelanchier laevis'' has stems of or which grow in small clumps. Its petioles are with green blades which are elliptic and almost ovate. The leaves have 12–17 lateral veins and 6-8 teeth per cm. The white blossoms, which can be spectacular in mature specimens, develop from pink buds in spring. The fruit, which are pomes, ripen in autumn. They are edible and can be eaten raw or cooked. The fruit has a sweet flavor. The bark can be made into a herbal medicine for expectant mothers. It is a deciduous tree hardy in zones 4 to 8. It is cultivated as an ornamental shrub. The cultivar 'R.J. Hilton', with richer spring and autumn leaf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juglans Nigra
''Juglans nigra'', the eastern American black walnut, is a species of deciduous tree in the walnut family, Juglandaceae, native to North America. It grows mostly in riparian zones, from southern Ontario, west to southeast South Dakota, south to Georgia, northern Florida and southwest to central Texas. Wild trees in the upper Ottawa Valley may be an isolated native population or may have derived from planted trees. Black walnut is an important tree commercially, as the wood is a deep brown color and easily worked. Walnut seeds ( nuts) are cultivated for their distinctive and desirable taste. Walnut trees are grown both for lumber and food, and many cultivars have been developed for improved quality wood or nuts. Black walnut is susceptible to thousand cankers disease, which provoked a decline of walnut trees in some regions. Black walnut is anecdotally known for being allelopathic, which means that it releases chemicals from its roots and other tissues that may harm other or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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