Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
Sequoiadendron giganteum

Higher Taxonomy
Family: CupressaceaeView DescriptionDichotomous Key

Habit: Shrub, tree, generally evergreen; monoecious or dioecious. Leaf: simple, cauline, alternate or opposite (either +- 4-ranked) or whorled in 3s (6-ranked), linear or scale-, awl- or needle-like (sometimes linear and awl-like on 1 pl, or on juvenile or injured plants), generally decurrent, covering young stems. Pollen Cone: axillary or terminal. Seed Cone: +- fleshy to generally woody, generally hard at maturity; scales opposite or whorled, peltate or not. Seed: 1--many per scale, angled or lateral winged, generally wind-dispersed. Chromosomes: n=11.
Genera In Family: 30 genera, 130+ species: +- worldwide, especially North America, Eurasia. Note: Incl (paraphyletic) Taxodiaceae. Taxa of (polyphyletic) Cupressus in TJM (1993) now in Callitropsis, Chamaecyparis, Hesperocyparis.
eFlora Treatment Author: Jim A. Bartel, except as noted
Scientific Editor: Thomas J. Rosatti.
Genus: SequoiadendronView Description 


Species In Genus: 1 sp.: California. Etymology: (Greek: sequoia tree)
eFlora Treatment Author: Steve Boyd & James R. Griffin

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

Name Search
botanical illustration including Sequoiadendron giganteum


Citation for this treatment: Steve Boyd & James R. Griffin 2017. Sequoiadendron giganteum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 24, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on May 24, 2017.

Geographic subdivisions for Sequoiadendron giganteum:
SNH, naturalized in northwestern San Jacinto Mountains (Black Mountain), possibly naturalizing in San Gabriel Mountains, San Bernardino Mountains.
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.