Biology:Sequoiadendron

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Short description: Genus of conifers in the cypress family Cupressaceae

Sequoiadendron
Giant sequoias in Sequoia National Park 02 2013.jpg
Trees in Sequoia National Park
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Cupressales
Family: Cupressaceae
Subfamily: Sequoioideae
Genus: Sequoiadendron
J.Buchholz
Type species
Sequoiadendron giganteum
(Lindley) J.Buchholz
Species
Synonyms[1]

Sequoiadendron is a genus of evergreen trees, with two species, only one of which survives to the present:[1]

  • Sequoiadendron giganteum, extant, commonly known as wellingtonia, giant redwood and giant sequoia,[2] growing naturally in the Sierra Nevada mountains of California [3]
  • Sequoiadendron chaneyi, extinct, the predecessor of Sequoiadendron giganteum, found mostly in the Nevada part of the Tertiary Colorado Plateau until the late Miocene[4]

Fossil record

Sequoiadendron chaneyi foliage fossil, Nevada, United States

Sequoiadendron fossil pollen and macrofossils may have been found as early as the Cretaceous[5] and throughout the Northern Hemisphere,[6] including locations in western Georgia in the Caucasus region.[7]

References

  1. 1.0 1.1 "Kew World Checklist of Selected Plant Families". http://apps.kew.org/wcsp/namedetail.do?name_id=381300. 
  2. "Wellingtonia – Sequoiadendron giganteum". NatureSpot. https://www.naturespot.org.uk/species/wellingtonia. 
  3. "2013 county distribution map". Biota of North America. http://bonap.net/MapGallery/County/Sequoiadendron%20giganteum.png. 
  4. Axelrod, Daniel L. (1959). "Late Cenozoic evolution of the Sierran Bigtree forest". Evolution 13 (1): 9–23. doi:10.1111/j.1558-5646.1959.tb02990.x. 
  5. Sokolova, A. B.; Moiseeva, M. G. (2016). "A new species of the genus Sequoiadendron Buchholz (Cupressaceae) from the Upper Cretaceous of the Enmyvaam River Basin, Central Chukotka". Paleontological Journal 50 (1): 96–107. doi:10.1134/S003103011601010X. 
  6. Chaney, Ralph W (1950). "A Revision of Fossil Sequoia and Taxodium in Western North America Based on the Recent Discovery of Metasequoia". Transactions of the American Philosophical Society 40 (3): 188. doi:10.2307/1005641. 
  7. Shatilova, Irina; Mchedlishvili, Nino; Rukhadze, Luara; Kvavadze, Eliso (2011). The History of the Flora and Vegetation of Georgia. Tbilisi: Georgian National Museum Institute of Paleobiology. ISBN 978-9941-9105-3-1. 

Wikidata ☰ Q14707792 entry