Sequoiadendron

Sequoiadendron
	Trees in Sequoia National Park
	Sequoiadendron chaneyi foliage fossil, Nevada
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Gymnospermae
Division:	Pinophyta
Class:	Pinopsida
Order:	Cupressales
Family:	Cupressaceae
Subfamily:	Sequoioideae
Genus:	Sequoiadendron; J.Buchholz
Species
	Sequoiadendron giganteum (Lindl.) J.Buchholz; † Sequoiadendron chaneyi;
Synonyms
	Steinhauera C.Presl; Wellingtonia Lindl. 1853, illegitimate homonym, not Meisn. 1840 (Sabiaceae); Americus Hanford, rejected name; Washingtonia Winslow 1854, rejected name, not H. Wendl. 1879 (Arecaceae) not Raf. ex J.M. Coult. & Rose 1900 (Apiaceae);

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 the "giant sequoia", growing naturally in the Sierra Nevada of California^[2]
† Sequoiadendron chaneyi, extinct, the predecessor of Sequoiadendron giganteum, found mostly in the Nevada part of the Tertiary Colorado Plateau until the late Miocene^[3]

Fossil record

Sequoiadendron fossil pollen and macrofossils have been found as early as the Cretaceous^[4] and throughout the Northern Hemisphere,^[5] including locations in western Georgia in the Caucasus region.^[6]

References

^ ^a ^b "Kew World Checklist of Selected Plant Families".
^ "2013 county distribution map". Biota of North America.
^ 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. JSTOR 2405942.
^ Sokolova, AB; Moiseeva, MG (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.
^ 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. JSTOR 1005641.
^ 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.

External links

Media related to Sequoiadendron at Wikimedia Commons
Data related to Sequoiadendron at Wikispecies

[n-1] "Kew World Checklist of Selected Plant Families".

[2] "2013 county distribution map". Biota of North America.

[3] 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. JSTOR 2405942.

[Sokolova-4] Sokolova, AB; Moiseeva, MG (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.

[5] 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. JSTOR 1005641.

[6] 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.

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