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Sequoia sempervirens (/ s ə ˈ k w ɔɪ. ə ˌ s ɛ m p ər ˈ v aɪ r ən z /) [3] is the sole living species of the genus Sequoia in the cypress family Cupressaceae (formerly treated in Taxodiaceae). Common names include coast redwood, coastal redwood and California redwood. It is an evergreen, long-lived, monoecious tree living 1,200 ...
The redwood family contains the largest and tallest trees in the world. These trees can live for thousands of years. Threats include logging, fire suppression, [1] illegal marijuana cultivation, and burl poaching. [2] [3] Only two of the genera, Sequoia and Sequoiadendron, are known for massive trees.
While it is the largest tree known, the General Sherman tree is neither the tallest known living tree on Earth (that distinction belongs to Hyperion, a coast redwood), [8] nor is it the widest (both the largest cypress and largest baobab have a greater diameter), nor is it the oldest known living tree on Earth (that distinction belongs to Prometheus, a Great Basin bristlecone pine). [9]
General Grant tree, General Grant Grove, Kings Canyon National Park, 2007. Giant sequoias occur naturally in only one place on Earth—the western slope of the Sierra Nevada mountain range in California, on moist, unglaciated ridges and valleys [8] at an altitude of 820 to 2,100 meters (2,700 to 6,900 ft) above mean sea level.
Sequoiadendron giganteum (also known as the giant sequoia, giant redwood, Sierra redwood or Wellingtonia) is a species of coniferous tree, classified in the family Cupressaceae in the subfamily Sequoioideae. Giant sequoia specimens are the most massive trees on Earth. [3]
Two main opposing forces affect a tree's height; one pushes it upward while the other holds it down. By analyzing the interplay between these forces in coast redwoods (Sequoia sempervirens), a team of biologists led by George Koch of Northern Arizona University calculated the theoretical maximum tree height or the point at which opposing forces balance out and a tree stops growing.
Metasequoia, or dawn redwood, is a genus of fast-growing coniferous trees, one of three species of conifers known as redwoods. The living species Metasequoia glyptostroboides is native to Lichuan county in Hubei province, China. Although the shortest of the redwoods, it grows to at least 165 feet (50
The largest dawn redwood recorded was an isolated specimen in China about 50 meters (160 feet) tall and 2.2 meters (7.2 feet) wide. This tree was killed by a lightning strike in 1951. [18] Several dawn redwoods of this height still live in the eastern part of Metasequoia Valley, where the tree was discovered.