Giant Sequoia ( Sequoidendron giganteum )
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Transcript of Giant Sequoia ( Sequoidendron giganteum )
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Giant Sequoia (Sequoidendron giganteum)
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One of three species of Redwood TreesCoast Redwood (Sequoia sempervirens)Dawn Redwood (Metasequoia glyptostroboides)
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Taxonomy Kingdom – Plantae (Plants0 Phylum – Pinophyta(Conifer – needle bearing) Class – Pinopsida (Coniger – evergreen needle) Order – Pinales (cone bearing evergreens) Family – Cupressaceae (Cypress family- flat needles) Subfamily – Sequoioideae (Redwood subfamily) Genus Sequoiadendron (giant sequoia family) Species – S. giganteum
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Description;Worlds largest single trees by volume.
Grow to an average height of 160-279 feet
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They can be 20 to 26 feet in diameter.Record trees have been measured at 311
feet high and 56 feet in diameter.
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Giant Sequoia outside visitor’s center at Sequoia National Park
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The oldest known tree is 3,500 years old.
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The bark is fibrous, furrowed, and may be 3 feet thick. It provides protection from fire.
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The leaves are evergreen, awl-shaped, 3-6 mm long and arranged spirally on the stems.
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The seed cones are 4-7 cm long (1.6 to 2.8 inches) and mature in 18-20 months.
They typically remain closed for years.
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They reproduce by seed. A large tree can disperse up to 300,000 to 400,000 seeds/year.
Fire opens cones and allows for seeds to be rapidly dispersed.
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They occur in scattered groves, with a total of 68 groves.
They like a humid climate with a dry summer and snowy winters.
They prefer to grow at altitudes of 5,660 to 7,050 feet
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Because of fire suppression the trees are having a hard time reproducing and are
currently declining in numbers.
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The tree is widely planted in Europe, NewZealand and western north america. It
has a harder time in the eastern united states.
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60 year old trees in Germany
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General Sherma
n – largest
by volume
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General Grant –
2nd largest
tree
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The Lincoln Tree- 4th largest
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Bibliography En.wikipedia.org/wiki/Sequioadendron_giganteum www.fs.usda.gov.sdquoia.gov. Library.thinkquest.org/J002415 Eol.org/pages/323361/details www.arkive.org > Species > Plants and algae