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[[File:US_199_Redwood_Highway.jpg|US 199 Redwood Highway|thumb]] [[File:Sectionaltree.jpg|Sectionaltree|thumb|left]] [[File:Sequoia_sempervirens_MHNT.BOT.2007.52.2.jpg|Sequoia sempervirens MHNT.BOT.2007.52.2|thumb|left]] [[File:Albert_Bierstadt_-_California_Redwoods.jpg|Albert Bierstadt - California Redwoods|thumb]] [[File:030803a_redwoodfog.jpg|030803a redwoodfog|thumb]] [[File:Cross_section_of_a_Sequoia_sempervirens_showing_its_tree_rings.jpg|Cross section of a Sequoia sempervirens showing its tree rings|thumb]] '''Sequoia sempervirens''', commonly known as the '''coast redwood''', is a species of evergreen tree in the cypress family Cupressaceae native to the coast of [[California]] and the southwestern corner of [[Oregon]] in the [[United States]]. It is known for being the tallest tree species in the world, with some specimens reaching heights of over 379 feet (115.5 meters). The coast redwood thrives in the moist, foggy climate of the Pacific Coast, where it forms dense, ancient forests, some of which are preserved in [[Redwood National and State Parks]].

== Description ==
The '''Sequoia sempervirens''' is an evergreen tree, capable of reaching up to 379 feet in height and 29 feet in diameter at breast height. The bark of the coast redwood is very thick, up to 12 inches, and fibrous, providing significant protection against fire. The leaves are arranged in a spiral pattern, are needle-like, and vary in length from 15 to 25 millimeters. The tree's cones are small, 15–32 millimeters long, and contain 14–24 seeds. The coast redwood is known for its longevity, with some specimens being over 2,200 years old.

== Habitat and Ecology ==
[[Sequoia sempervirens]] prefers the moist, humid climate along the Pacific coast, thriving in the fog that is common in this region. The fog provides a critical source of moisture during the dry summer months, contributing to the tree's growth and survival. The species is found in a narrow strip along the coast, from southwestern Oregon down through California, reaching as far south as the Big Sur area. The trees are an integral part of the coastal ecosystem, providing habitat for numerous species of plants, animals, and fungi.

== Conservation ==
The coast redwood has faced significant threats from logging and land development, leading to a substantial reduction in its range and the size of its old-growth forests. Conservation efforts have led to the protection of significant areas of redwood forest, most notably in the [[Redwood National and State Parks]] and other state and national parks. These protected areas are crucial for the preservation of the species and its ecosystem. Ongoing conservation efforts focus on protecting existing forests, restoring logged areas, and studying the impacts of climate change on the species.

== Cultural and Historical Significance ==
The coast redwood has held significant cultural and spiritual significance for the indigenous peoples of the region, who have used the tree's wood for building, tools, and ceremonial purposes. In the 19th and early 20th centuries, the redwood forests were heavily logged, leading to a significant loss of old-growth forests. Today, the coast redwood is celebrated for its beauty, ecological importance, and as a symbol of conservation efforts.

== See Also ==
* [[Redwood National and State Parks]]
* [[Old-growth forest]]
* [[Conservation status]]
* [[List of tallest trees]]

[[Category:Trees of California]]
[[Category:Trees of Oregon]]
[[Category:Conservation]]
[[Category:Flora of the Pacific]]
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Sequoia sempervirens - Revision history

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