Sequoiadendron

Sequoiadendron
	Trees in Sequoia National Park
	Sequoiadendron chaneyi foliage fossil, Nevada
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Division:	Pinophyta
Class:	Pinopsida
Order:	Pinales
Family:	Cupressaceae
Subfamily:	Sequoioideae
Genus:	Sequoiadendron; J.Buchholz
Species
	Sequoiadendron giganteum (Lindl.) J.Buchholz; † Sequoiadendron chaneyi;
Synonyms[1]
	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]

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References

"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. doi:10.1134/S003103011601010X.
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. 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

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[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. doi:10.1134/S003103011601010X.

[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. doi:10.2307/1005641. 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.