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red oak

Translation
red oak
1. any of several oak trees, as Quercus rubra, or Q. falcata, of North America.
2. the hard, cross-grained wood of these trees.
[1625-35, Amer.]

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 any member of a group or subgenus (Erythrobalanus) of North American ornamental and timber shrubs and trees of the genus Quercus, in the beech family (Fagaceae), that have bristle-tipped leaves, acorns with hairy shell linings, and bitter seeds that mature in two seasons. black oak, live oak, willow oak (including water oak, laurel oak, shingle oak), and pin oak (qq.v.) are red oaks.

      More specifically, red oak refers to two important timber trees, the northern red oak (Quercus rubra) and the southern red oak, or Spanish oak (Q. falcata). The northern red oak is often cultivated as an ornamental; it grows rapidly into a round-headed, wide-spreading tree about 25 m (80 feet) tall, occasionally to 45 m (150 feet). Its oblong leaves have 7 to 11 lobes, are 20 cm (8 inches) or longer, and are dull green above and yellowish green and hairy beneath; they turn red-orange in autumn and persist into winter. The acorn is about 3 cm long and held at the base in a shallow cup.

      The southern red oak, also planted as an ornamental, has a deeper root system, a shorter trunk, and two types of leaves: one with three apical lobes, the other with five to seven deep lobes, with the terminal lobe further divided. Both types are about 18 cm long, glossy dark green above, and rusty and hairy below; they turn orange to orange-brown in autumn.

      Cherry-bark oak, or swamp red oak, a valuable timber tree also used as an ornamental, is a variety of the southern red oak. It is a larger tree, up to 36 m, with more uniform, 5- to 11-lobed leaves, often 23 cm long. The gray-brown to black scaly bark resembles that of black cherry.

      The scarlet oak (Q. coccinea), Nuttall oak (Q. nuttallii), and Shumard oak (Q. shumardii) are other valuable timber trees of eastern and southern North America. The scarlet oak has a short, rapidly tapering trunk and leaves with nearly circular sinuses; it is a popular ornamental because of its scarlet autumn foliage. The Nuttall oak is a slender, often pyramidal tree, similar to the scarlet oak except for its oblong, often striated acorns. The Shumard oak is a tall (up to 23 m) bottomland tree with an open crown, long, clear trunk, and seven- to nine-lobed leaves.

      The Texas red oak (Q. texana), about 10 m tall, is sometimes considered a shorter variety of the Shumard oak.

      The blackjack oak (Q. marilandica), a cover tree on sandy soils in eastern North America, is about 9 to 15 m tall, with leaves that bear three lobes at the wide apex; they are glossy and dark green above, rusty and hairy below.

      Timber from all members of the red oak group is called “red oak” in the lumber trade.

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Universalium. 2010.

  
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  • red oak — noun Date: 1634 1. any of various North American oaks (as Quercus rubra and Quercus falcata) that have acorns with the inner surface of the shell lined with woolly hairs, the acorn cap covered with thin scales, and leaf veins that usually run… …   New Collegiate Dictionary

  • Red oak — Oak Oak ([=o]k), n. [OE. oke, ok, ak, AS. [=a]c; akin to D. eik, G. eiche, OHG. eih, Icel. eik, Sw. ek, Dan. eeg.] [1913 Webster] 1. (Bot.) Any tree or shrub of the genus {Quercus}. The oaks have alternate leaves, often variously lobed, and… …   The Collaborative International Dictionary of English

  • Red Oak — is the name of several places in the United States, all named for the Red Oak tree:*Red Oak, Georgia *Red Oak, Iowa *Red Oak, North Carolina *Red Oak, Oklahoma *Red Oak, Texas *Red Oaks Mill, New York …   Wikipedia

  • Red Oak — (dt. rote Eiche) ist der Name der folgender Städte: in den Vereinigten Staaten: Red Oak (Arkansas) Red Oak (Georgia) Red Oak (Iowa) Red Oak (North Carolina) Red Oak (Oklahoma) Red Oak (Texas) Siehe auch Red Oak Township …   Deutsch Wikipedia

  • Red oak — may refer to:* Lobatae , a kind of oak tree * Agkistrodon contortrix , a venomous snake species found in North America * Red Oak, Iowa, a town in southwestern Iowa …   Wikipedia

  • Red Oak — (spr. redd ōk), Stadt im nordamerikan. Staat Iowa, am East Nishnabatona River, mit Tonwaren und Ziegelfabrikation, Handel und (1900) 4355 Einw …   Meyers Großes Konversations-Lexikon

  • red oak — 1) Биология: дуб северный (Quercus borealis), дуб американский шарлаховый (Quercus coccinea) 2) Лесоводство: дуб красный (Quercus rubra), (Quercus rubra L. (Quercus borealis Michx.)) красный дуб …   Универсальный англо-русский словарь

  • Northern Red Oak — Taxobox name = Northern Red Oak status = G5 status system = TNC status ref =Citation last =NatureServe first = author link = last2 = first2 = author2 link = contribution = Quercus rubra title = NatureServe Explorer: An online encyclopedia of life …   Wikipedia

  • Texas Red Oak — Taxobox name = Texas Red Oak regnum = Plantae divisio = Magnoliophyta classis = Magnoliopsida ordo = Fagales familia = Fagaceae genus = Quercus species = Q. buckleyi binomial = Quercus buckleyi binomial authority = Nixon DorrTexas Red Oak (… …   Wikipedia

  • American red oak — Морской термин: красный дуб …   Универсальный англо-русский словарь

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