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Nov 28

Dutch berk, Low German Bark, Danish birk, Norwegian bjørk), itself from the Proto-Indo-European root *bʰerHǵ- ~ bʰrHǵ-, which also gave Lithuanian béržas, Latvian Bērzs, Russian beryóza, Ukrainian beréza, Albanian bredh ‘fir’, Ossetian bærz(æ), Sanskrit bhurja, Polish brzoza, Latin fraxinus ‘ash (tree)’. Proof of this adaptability is seen in its easy and eager ability to repopulate areas damaged by forest fires or clearings. A birch is a thin-leaved deciduous hardwood tree of the genus Betula , in the family Betulaceae, which also includes alders, hazels, and hornbeams. [citation needed] This resonance compensates for the roll-off of low and high frequencies in the speakers, and evens the tone. Comments: Birch is one of the most widely used woods for veneer and plywood worldwide. The bark of all birches is characteristically marked with long, horizontal lenticels, and often separates into thin, papery plates, especially upon the paper birch. The yellow birch is the official tree of the province of Quebec (Canada). Birch Birch is a stiff, close-grained hardwood that grows primarily in northeast U.S. and Canada.A heavy wood, it has a high shock resistance. [20] There are numerous folkloric Russian songs in which the birch tree occurs. [clarification needed][15] The low opacity makes it suitable for making glassine. Birch drums have a natural boost in the high and low frequencies, which allows the drums to sound fuller. However, it is more moisture resistant than many other hardwoods and is suitable for foyers and kitchens. Birch is a hardwood harvested in most of the Northern Hemisphere. The simple leaves are alternate, singly or doubly serrate, feather-veined, petiolate and stipulate. Besides regular sheets of plywood, Birch veneer is also used for doors, furniture, and paneling. The Birch tree grows all over the world and is popular for its wood, bark and extracts. There are over a dozen species of birch trees native to North America, but the most common are white birch, yellow birch, and black birch. In 1888, the Umeå city fire spread all over the city and nearly burnt it down to the ground, but some birches, supposedly, halted the spread of the fire. The genus Betula contains 30 to 60 known taxa of which 11 are on the IUCN 2011 Red List of Threatened Species. Yellow birch and white birch are the two most commonly found in woodworking. It is often used as a substitute for maple because it has a similar grain pattern. [12][13], Preliminary research indicates that the phytochemicals, betulin and possibly other triterpenes, are active in Episalvan gel and wound healing properties of birch bark. These scales bear two or three fertile flowers, each flower consisting of a naked ovary. Birches often form even-aged stands on light, well-drained, particularly acidic soils. When built into a drum shell, for example, birch produces a sound that has tone and depth that other drum shells cannot rival. Yellow birch rates 1,260, paper birch 910, and gray birch 760. Birch bark makes great fire starter because of its similarity to paper. Birch paper (Sanskrit: भुर्ज पत्र, bhurja patra) is exceptionally durable and was the material used for many ancient Indian texts. 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. Related Species: Alaska Paper Birch (Betula neoalaskana) Alder-leaf Birch (Betula alnoides) Downy Birch (Betula pubescens) Gray Birch (Betula populifolia) It is the main hardwood in use up here. They are regarded as pioneer species, rapidly colonizing open ground especially in secondary successional sequences following a disturbance or fire. The Czech word for the month of March, Březen, is derived from the Czech word bříza meaning birch, as birch trees flower in March under local conditions. It's a hardwood used to make furniture, longboards and plywood. Sanjukta Gupta, "Lakṣmī Tantra: A Pāñcarātra Text", Brill Archive, 1972. Birch is abundant in North America, especially in the northern United States and Canada, and while it isn't a superior furniture-grade hardwood, it's a good one. High quality firewood is also from birch. They differ from the alders (Alnus, other genus in the family) in that the female catkins are not woody and disintegrate at maturity, falling apart to release the seeds, unlike the woody, cone-like female alder catkins. The flowers are monoecious, opening with or before the leaves and borne once fully grown these leaves are usually 3–6 millimetres (1⁄8–1⁄4 in) long on three-flowered clusters in the axils of the scales of drooping or erect catkins or aments. Compete sets of cabinets can be built entirely of birch plywood by mitering everything, eliminating the need for the hard birch lumber face-frame. Anther cells open longitudinally. Musicians and electronics manufacturers seek out birch because of an inherent resonant quality it imparts to speakers and musical instruments. [13] Splints made with birch bark were used as casts for broken limbs in the 16th century.[14]. The ovary is compressed, two-celled, and crowned with two slender styles; the ovule is solitary. De très nombreux exemples de phrases traduites contenant "birch hardwood" – Dictionnaire français-anglais et moteur de recherche de traductions françaises. The Himalayan birch, Betula utilis, especially the variety or subspecies jacquemontii, is among the most widely planted for this purpose. When birch plywood is made into a set of cabinets, it's standard procedure to use alder or even maple hardwood as a substitute for a birch face-frame. Distinctive colors give the common names gray, white, black, silver and yellow birch to different species. Umeå later adopted the unofficial name of "City of the Birches (Björkarnas stad)". In the British Isles, there is some difference between the environments of Betula pendula and Betula pubescens, and some hybridization, though both are "opportunists in steady-state woodland systems". It is the main hardwood in use up here. Birch wood is sometimes used as a tonewood for semiacoustic and acoustic guitar bodies, and occasionally for solid-body guitar bodies. Each calyx bears four short filaments with one-celled anthers or strictly, two filaments divided into two branches, each bearing a half-anther. The pistillate aments are erect or pendulous, solitary; terminal on the two-leaved lateral spur-like branchlets of the year. They often appear in pairs, but these pairs are really borne on spur-like, two-leaved, lateral branchlets. Birch hardwood flooring is available in two types: solid hardwood and engineered hardwood. "Swinging" birch trees was a common game for American children in the nineteenth century. The generic name betula is from Latin, which is a diminutive borrowed from Gaulish betua (cf. Birches have spiritual importance in several religions, both modern and historical. Birches are generally lowland species, but some species, such as Betula nana, have a montane distribution. [23], Genus of flowering plants in the family Betulaceae, Ashburner, K. & McAllister, H.A. Each scale bears two bractlets and three sterile flowers, each flower consisting of a sessile, membranaceous, usually two-lobed, calyx. Common Characteristics of Birch Trees. It makes for excellent furniture material on its own as long as it’s indoors. This root is presumably derived from *bʰreh₁ǵ- ‘to shine, whiten’, in reference to the birch's white bark. And even though it is a relative to the oak, the lumber is much harder than oak. I would like to add that massive birch is the most popular hardwood in Finland and the northern parts of scandinavia. Each scale bears a single small, winged nut that is oval, with two persistent stigmas at the apex. Wood pulp made from birch gives relatively long and slender fibres for a hardwood. 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.[3].

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