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|Family: Cupressaceae||View Description||Dichotomous Key|
|Genus: Sequoiadendron||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Sequoiadendron giganteum (Lindl.) J. Buchholz
Habit: Tree, generally not sprouting. Stem: trunk < 90 m, to 11 m diam; old crown irregular, with large branches throughout; bark to +- 60 cm thick near base, fibrous, ridged, red-brown; branches spreading to downswept, ends upturned; twigs persistent < 20 years. Leaf: alternate, green < 4 years, persistent < 20; of 1 kind, appressed, +- 4-ranked, < 15 mm, awl-like. Pollen Cone: 4--8 mm, +- spheric to ovoid. Seed Cone: 40--90 mm, oblong, woody, maturing in 2 years, persistent < 20; scales peltate, fused to bracts. Seed: 3--9 per scale, 3--6 mm, wings 2, unequal, lateral. Chromosomes: n=11.
Ecology: Uncommon. Mixed-conifer forest, especially with favorable soil moisture; Elevation: 825--2700 m. Bioregional Distribution: SNH, naturalized in northwestern San Jacinto Mountains (Black Mountain), possibly naturalizing in San Gabriel Mountains, San Bernardino Mountains. Note: Most massive trunks in North America.
Unabridged Note: Schmid & Schmid (2011. Madroño 58:202--203; 2012. Aliso 30:19--32) rigorously documented that at least 157 plants (seedlings to saplings), some up to 40 years old (and reproducing), on northwestern flank of Black Mountain, northwestern San Jacinto Mountains, have descended naturally from plantings made nearby in 1974, and suggested that the same may occur from planted plants that are persisting in San Gabriel Mountains, San Bernardino Mountains.
eFlora Treatment Author: Steve Boyd & James R. Griffin
Jepson Online Interchange
Previous taxon: Sequoiadendron
Next taxon: Thuja
Citation for this treatment: Steve Boyd & James R. Griffin 2016. Sequoiadendron giganteum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44178, accessed on May 24, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 24, 2016.