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Betula Populifolia
''Betula populifolia'' (gray or grey birch) is a deciduous tree native to eastern North America. Range It ranges from southeastern Ontario east to Nova Scotia, and south to Pennsylvania and New Jersey, with disjunct populations in Indiana, Virginia, and North Carolina. It prefers poor, dry upland soils, but is also found in moist mixed woodlands. Living only about 30 years, it is a common pioneer species on abandoned fields and burned areas. It is possibly extirpated in Delaware. Characteristics Gray birch grows quickly to 20 to 30 feet (6.9 to 9.1 m) tall and 15 inch (38 cm) trunk diameter, with an irregular open crown of slender branches. The tree often has multiple trunks branching off an old stump. The leaves are 2 to 2.7 inches (5-7 cm) long by 1.6 to 2.4 inches (4-6 cm) wide, alternately arranged, ovate, and tapering to an elongated tip. They are dark green and glabrous above and paler below, with a coarsely serrated margin. The bark is chalky to grayish white wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humphry Marshall
Humphry Marshall (October 10, 1722 – November 5, 1801) was an American botanist and plant dealer. Biography Humphry Marshall was born at Derbydown Homestead in the village of Marshallton, Chester County, Pennsylvania, Marshallton, Pennsylvania (within West Bradford Township, Pennsylvania, West Bradford Township) on October 10, 1722. ''Note:'' This includes He was the cousin of botanists John Bartram and William Bartram. Like many early American botanists, he was a Quaker. Marshall received the rudiments of an English education, and was apprenticed to the business of a stonemason, which trade he subsequently followed. Soon after his marriage in 1748 to Sarah Pennock he took charge of his father's farm. His first book, ''A Few Observations Concerning Christ'', in 1755.A Few Observations concerning Christ, or the Eternal Word (London, 1755) https://www.google.com/books/edition/A_Few_Observations_concerning_Christ_or/nhpgAAAAcAAJ?hl=en He began to devote his attention to astron ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechanism for the union of sperm with eggs. Flowers may facilitate outcrossing (fusion of sperm and eggs from different individuals in a population) resulting from cross-pollination or allow selfing (fusion of sperm and egg from the same flower) when self-pollination occurs. There are two types of pollination: self-pollination and cross-pollination. Self-pollination occurs when the pollen from the anther is deposited on the stigma of the same flower, or another flower on the same plant. Cross-pollination is when pollen is transferred from the anther of one flower to the stigma of another flower on a different individual of the same species. Self-pollination happens in flowers where the stamen and carpel mature at the same time, and are positi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trees Of Canada
This list compiles many of the common large shrubs and trees found in Canada. The Canadian flora is depauperate because of the near total glaciation event in the Pleistocene. Due to the vast area of Canada, a tree that is common in one area may be completely absent in another. In particular, many warm-temperate trees can only be grown on the mild Pacific coast (where gardens may contain additional species not listed here). See also Provincial tree emblems of Canada for the official trees of the Provinces and Territories of Canada. Pinophyta (Conifers) ''Abies'' (firs) * ''Abies amabilis'' (Pacific Silver Fir) * ''Abies balsamea'' (Balsam Fir) * '' Abies bifolia'' (Rocky Mountains Subalpine Fir) * ''Abies concolor'' (White Fir) - introduced * ''Abies grandis'' (Grand Fir) * ''Abies lasiocarpa'' (Coast Range Subalpine Fir) * ''Abies magnifica'' (Red Fir) - introduced * ''Abies nordmanniana'' (Nordmann Fir) - introduced * ''Abies pinsapo'' (Spanish Fir) - introduced * ''Abies proce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trees Of The United States
In botany, a tree is a perennial plant with an elongated stem, or trunk, usually supporting branches and leaves. In some usages, the definition of a tree may be narrower, including only woody plants with secondary growth, plants that are usable as lumber or plants above a specified height. In wider definitions, the taller palms, tree ferns, bananas, and bamboos are also trees. Trees are not a taxonomic group but include a variety of plant species that have independently evolved a trunk and branches as a way to tower above other plants to compete for sunlight. The majority of tree species are angiosperms or hardwoods; of the rest, many are gymnosperms or softwoods. Trees tend to be long-lived, some reaching several thousand years old. Trees have been in existence for 370 million years. It is estimated that there are some three trillion mature trees in the world. A tree typically has many secondary branches supported clear of the ground by the trunk. This trunk typically co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula
A birch is a thin-leaved deciduous hardwood tree of the genus ''Betula'' (), in the family Betulaceae, which also includes alders, hazels, and hornbeams. It is closely related to the beech-oak family Fagaceae. The genus ''Betula'' contains 30 to 60 known taxa of which 11 are on the IUCN 2011 Red List of Threatened Species. They are a typically rather short-lived pioneer species widespread in the Northern Hemisphere, particularly in northern areas of temperate climates and in boreal climates. Description Birch species are generally small to medium-sized trees or shrubs, mostly of northern temperate and boreal climates. The simple leaves are alternate, singly or doubly serrate, feather-veined, petiolate and stipulate. They often appear in pairs, but these pairs are really borne on spur-like, two-leaved, lateral branchlets. The fruit is a small samara, although the wings may be obscure in some species. They differ from the alders (''Alnus'', another genus in the family) i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bronze Birch Borer
''Agrilus anxius'', the bronze birch borer, is a wood-boring buprestid beetle native to North America, more numerous in warmer parts of the continent and rare in the north. It is a serious pest on birch trees (''Betula''), frequently killing them. The river birch ''Betula nigra'' is the most resistant species, other American birches less so, while the European and Asian birches have no resistance to it at all and are effectively impossible to grow in the eastern United States as a result. It is closely related to the emerald ash borer The emerald ash borer (''Agrilus planipennis''), also known by the acronym EAB, is a green buprestid or jewel beetle native to north-eastern Asia that feeds on ash species. Females lay eggs in bark crevices on ash trees, and larvae feed undern .... References External linksUS Forest Service factsheet {{Taxonbar, from=Q1392910 Woodboring beetles anxius Beetles described in 1841 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Birch Dieback
Birch dieback is a disease of birch trees that causes the branches in the crown to die off. The disease may eventually kill the tree. In an event in the Eastern United States and Canada in the 1930s and 1940s, no causal agent was found, but the wood-boring beetle, the bronze birch borer, was implicated in the severe damage and death of the tree that often followed. In similar crown dieback occurrences in Europe several decades later, the pathogenic fungus '' Melanconium betulinum'' were found in association with affected trees, as well as '' Anisogramma virgultorum'' and ''Marssonina betulae''. Description Birch dieback tends to attack trees that are under stress, such as from drought, through winter kill or exposure to phenoxy herbicides used to control broad-leafed weeds in cereal crops. First, the foliage becomes scant and develops chlorosis or the leaves at the tips of the shoots start to curl. Then the twigs become bare as new leaves fail to develop. Whole branches may die as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Betula Alleghaniensis
''Betula alleghaniensis'', the yellow birch, golden birch, or swamp birch, is a large tree and an important lumber species of birch native to northeastern North America. Its vernacular names refer to the golden color of the tree's bark. In the past the species name was ''Betula lutea''. ''Betula alleghaniensis'' is the provincial tree of Quebec, where it is commonly called ''merisier'', a name which in France is used for the wild cherry. Description It is a medium-sized, typically single stemmed, deciduous tree reaching tall (exceptionally to ) with a trunk typically in diameter, making it the largest North American species of birch. Yellow birch is long-lived, typically 150 years and some old growth forest specimens may last for 300 years. It mostly reproduces by seed. Mature trees typically start producing seeds at about 40 years but may start as young as 20. The optimum age for seed production is about 70 years. Good seed crops are not produced every year, and tend to be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cameraria Betulivora
''Cameraria betulivora'' is a moth of the family Gracillariidae. It is known from Ontario and Quebec in Canada and the United States (including Maine and North Carolina). The wingspan is about 7 mm. The larvae feed on ''Betula'' species, including '' Betula alleghaniensis'', '' Betula lenta'', ''Betula lutea'', ''Betula papyrifera ''Betula papyrifera'' (paper birch, also known as (American) white birch and canoe birch) is a short-lived species of birch native to northern North America. Paper birch is named for the tree's thin white bark, which often peels in paper like ...'' and '' Betula populifolia''. They mine the leaves of their host plant. The mine has the form of a small, sometimes almost circular, blotch upon the upper side of the leaf. References betulivora Leaf miners {{Cameraria-stub Moths described in 1891 Lepidoptera of Canada Lepidoptera of the United States Moths of North America Taxa named by Thomas de Grey, 6th Baron Walsingham ... [...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 determi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepidoptera
Lepidoptera ( ) is an order (biology), order of insects that includes butterfly, butterflies and moths (both are called lepidopterans). About 180,000 species of the Lepidoptera are described, in 126 Family (biology), families and 46 Taxonomic rank, superfamilies, 10 percent of the total described species of living organisms. It is one of the most widespread and widely recognizable insect orders in the world. The Lepidoptera show many variations of the basic body structure that have evolved to gain advantages in lifestyle and distribution. Recent estimates suggest the order may have more species than earlier thought, and is among the four most wikt:speciose, speciose orders, along with the Hymenoptera, fly, Diptera, and beetle, Coleoptera. Lepidopteran species are characterized by more than three derived features. The most apparent is the presence of scale (anatomy), scales that cover the torso, bodies, wings, and a proboscis. The scales are modified, flattened "hairs", and give ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agrilus Anxius
''Agrilus anxius'', the bronze birch borer, is a wood-boring buprestid beetle native to North America, more numerous in warmer parts of the continent and rare in the north. It is a serious pest on birch trees (''Betula''), frequently killing them. The river birch ''Betula nigra'' is the most resistant species, other American birches less so, while the European and Asian birches have no resistance to it at all and are effectively impossible to grow in the eastern United States as a result. It is closely related to the emerald ash borer The emerald ash borer (''Agrilus planipennis''), also known by the acronym EAB, is a green buprestid or jewel beetle native to north-eastern Asia that feeds on ash species. Females lay eggs in bark crevices on ash trees, and larvae feed undern .... References External linksUS Forest Service factsheet {{Taxonbar, from=Q1392910 Woodboring beetles anxius Beetles described in 1841 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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