big tree

a large coniferous tree, Sequoiadendron giganteum (formerly Sequoia gigantea), of California, often reaching 300 ft. (91 m) in height, having reddish-brown bark, scalelike blue-green leaves, and bearing large elliptical cones. Also called giant sequoia. Cf. sequoia.
[1850-55, Amer.]

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or giant sequoia or Sierra redwood

Coniferous evergreen (Sequoiadendron giganteum; see conifer) found in scattered groves on the western slopes of the Sierra Nevada range of California, U.S. The largest of all trees in bulk, the big tree is distinguished from the coastal redwood (Sequoia sempervirens) by having uniformly scalelike, or awl-shaped, leaves that lie close against the branches, scaleless winter buds, and cones requiring two seasons to mature.

The pyramidal tree shape, reddish brown furrowed bark, and drooping branches are common to both genera. The largest specimen (in total bulk) is the General Sherman tree in Sequoia National Park
101.5 ft (31 m) in circumference at its base, 272.4 ft (83 m) tall, and weighing an estimated 6,167 tons (5,593 metric tons). Because big-tree lumber is more brittle than redwood lumber and thus less desirable, the big tree has been easier to preserve; though some groves have been cut, most of the 70 remaining groves are now protected by state or national forests or parks.

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also called  giant sequoia, or Sierra redwood 
 (Sequoiadendron giganteum; as distinct from the redwood of coastal areas, genus Sequoia), coniferous evergreen of the cypress family (Taxodiaceae) and the only species of the genus Sequoiadendron, found in scattered groves on the western slopes of the Sierra Nevada Range of California at elevations between 900 and 2,600 metres (3,000 and 8,500 feet). The big tree is the largest of all trees in bulk; once reputed as the oldest living thing, the largest stumps examined in tree-ring studies were found to be less than 4,000 years old (bristlecone pines are older, and a king's holly plant, Lomatia tasmanica, found in Tasmania, is more than 43,000 years old).

      The big tree is distinguished from the coastal redwood by having uniformly scalelike, or awl-shaped, leaves that lie close against the branches, scaleless winter buds, and cones requiring two seasons to mature. The pyramidal tree shape, reddish brown furrowed bark, and drooping branches are common to both genera. The largest specimen is the General Sherman tree in Sequoia National Park. This tree measures 31 metres (101.5 feet) in circumference at its base, is 83 metres (272.4 feet) tall, and has a total estimated weight of 6,167 tons. A few specimens are more than 105 metres (345 feet) high but have less bulk than the General Sherman tree. Although a number of groves of big trees have been cut, the big tree's lumber is more brittle than that of the redwood; because the lumber is less desirable, it has been easier to save the big trees from destruction. Most of the 70 distinct groves are now under the protection of state or national forests or parks.

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Universalium. 2010.

Look at other dictionaries:

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  • big tree — big′ tree n. pln a large sequoia, Sequoiadendron giganteum, growing to 300 ft. (91 m) high, having reddish brown bark and scalelike blue green leaves Also called giant sequoia • Etymology: 1850–55 …   From formal English to slang

  • big tree — ☆ big tree n. a giant California evergreen (Sequoiadendron giganteum) of the baldcypress family, found in the high Sierras and often exceeding 90 m ( c. 300 ft) in height; giant sequoia …   English World dictionary

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