Difference between revisions of "Sequoiadendron giganteum"

(Lindley) J. Buchholz

Amer. J. Bot. 26: 536. 1939.

Common names: Giant sequoia bigtree Sierra-redwood
Basionym: Wellingtonia gigantea LindleySequoia gigantea (Lindley) Decaisne
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--><span class="statement" id="st-d0_s0" data-properties="tree some measurement"><b>Trees </b>to 90 m;</span> <span class="statement" id="st-d0_s1" data-properties="trunk diameter">trunk to 11 m diam.;</span> <span class="statement" id="st-d0_s2" data-properties="crown shape;crown architecture;crown shape;crown shape">crown conic and monopodial when young, narrowed and somewhat rounded in age.</span> <span class="statement" id="st-d0_s3" data-properties="bark coloration;bark thickness;bark texture;bark shape;bark architecture"><b>Bark </b>reddish-brown, to ca. 60 cm thick, fibrous, ridged and furrowed.</span> <span class="statement" id="st-d0_s4" data-properties="branch orientation;branch shape;end orientation"><b>Branches </b>generally horizontal to downward-sweeping with upturned ends.</span> <span class="statement" id="st-d0_s5" data-properties="portion fusion;portion some measurement"><b>Leaves </b>generally with stomates on both surfaces, the free portion to ca. 15 mm.</span> <span class="statement" id="st-d0_s6" data-properties="pollen cone shape;pollen cone shape;pollen cone shape;pollen cone some measurement"><b>Pollen </b>cones nearly globose to ovoid, 4–8 mm.</span> <span class="statement" id="st-d0_s7" data-properties="seed-cone distance"><b>Seed-</b>cones 4–9 cm.</span> <span class="statement" id="st-d0_s8" data-properties="seed some measurement;2n chromosome count"><b>Seeds </b>3–6 mm. <b>2n</b> = 22.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Trees </b>to 90 m; trunk to 11 m diam.; crown conic and monopodial when young, narrowed and somewhat rounded in age. <b>Bark</b> reddish brown, to ca. 60 cm thick, fibrous, ridged and furrowed. <b>Branches</b> generally horizontal to downward-sweeping with upturned ends. <b>Leaves</b> generally with stomates on both surfaces, the free portion to ca. 15 mm. <b>Pollen</b> cones nearly globose to ovoid, 4–8 mm. <b>Seed</b> cones 4–9 cm. <b>Seeds</b> 3–6 mm. <b>2n</b> = 22.</span><!--
  
 
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|publication year=1939
 
|publication year=1939
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V2/V2_491.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_491.xml
 
|genus=Sequoiadendron
 
|genus=Sequoiadendron
 
|species=Sequoiadendron giganteum
 
|species=Sequoiadendron giganteum
|2n chromosome count=22
 
|bark architecture=furrowed
 
|bark coloration=reddish-brown
 
|bark shape=ridged
 
|bark texture=fibrous
 
|bark thickness=0cm;60cm
 
|branch orientation=horizontal
 
|branch shape=downward-sweeping
 
|crown architecture=monopodial
 
|crown shape=rounded;narrowed;conic
 
|end orientation=upturned
 
|pollen cone shape=nearly globose;ovoid
 
|pollen cone some measurement=4mm;8mm
 
|portion fusion=free
 
|portion some measurement=0mm;15mm
 
|seed some measurement=3mm;6mm
 
|seed-cone distance=4cm;9cm
 
|tree some measurement=0m;90m
 
|trunk diameter=0m;11m
 
 
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Revision as of 14:22, 27 July 2019

Trees to 90 m; trunk to 11 m diam.; crown conic and monopodial when young, narrowed and somewhat rounded in age. Bark reddish brown, to ca. 60 cm thick, fibrous, ridged and furrowed. Branches generally horizontal to downward-sweeping with upturned ends. Leaves generally with stomates on both surfaces, the free portion to ca. 15 mm. Pollen cones nearly globose to ovoid, 4–8 mm. Seed cones 4–9 cm. Seeds 3–6 mm. 2n = 22.


Habitat: Mixed montane coniferous forests, in isolated groves on the w slopes of the Sierra Nevada
Elevation: 900–2700 m

Discussion

Mature individuals of this species are the most voluminous living organisms and among the most long-lived trees. Sequoiadendron giganteum was formerly included in Sequoia, under the later homonym Sequoia gigantea (Lindley) Decaisne, a conservative placement that still has merit (J. Doyle 1945; O. Schwarz and H. Weide 1962).

Redwood, including Sequoiadendron giganteum and Sequoia sempervirens, is the state tree of California.

Selected References

None.

Lower Taxa

None.
... more about "Sequoiadendron giganteum"
Frank D. Watson +
(Lindley) J. Buchholz +
Wellingtonia gigantea +  and Sequoia gigantea +
Giant sequoia +, bigtree +  and Sierra-redwood +
900–2700 m +
Mixed montane coniferous forests, in isolated groves on the w slopes of the Sierra Nevada +
Amer. J. Bot. +
Sequoiadendron giganteum +
Sequoiadendron +
species +