Sequoiadendron

Sequoiadendron is a genus of evergreen trees, with three 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, the predecessor of Sequoiadendron giganteum, found mostly in the Nevada area of the Tertiary Colorado Plateau until the late Miocene^[4]
• †Sequoiadendron tchucoticum Late Cretaceous; Enmyvaam River Basin, Russia^[5]

Sequoiadendron Temporal range: Santonian– Present PreꞒ Ꞓ O S D C P T J K Pg N
Trees in Sequoia National Park
Scientific classification
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
S. giganteum (Lindl.) J.Buchholz †S. chaneyi †S. tchucoticum
Synonyms[1]
Sequoiadendron synonymy Americus Hanford, rejected name Steinhauera C.Presl 1838, not Goepp. 1835 (Altingiaceae) Washingtonia Winslow 1854, rejected name, not H. Wendl. 1879 (Arecaceae) not Raf. ex J.M. Coult. & Rose 1900 (Apiaceae) Wellingtonia Lindl. 1853, illegitimate homonym, not Meisn. 1840 (Sabiaceae)

Fossil record

Sequoiadendron chaneyi foliage fossil, Nevada, United States

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