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Sequoia sempervirens

(California Redwood)

Overview

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Vulnerable

Threat status

Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Arabic:

سيكويا دائمة الخضرة

Common Names in Azerbaijani:

Sekvoya

Common Names in Basque:

Sekuoia luze

Common Names in Bulgarian:

Секвоя

Common Names in Burmese:

ဆီကွိုင်းယားပင်

Common Names in Chinese:

加州紅木, 北美红杉 (bei mei hong shan)

Common Names in Croatian:

Obalna sekvoja

Common Names in Czech:

Sekvoj vždyzelená

Common Names in Danish:

Rødtræ

Common Names in Dutch:

Kustmammoetboom

Common Names in English:

California Redwood, Coast Redwood, Californian redwood, Humboldt redwood, Redwood

Common Names in Esperanto:

Sekvojo

Common Names in Estonian:

Ranniksekvoia

Common Names in Finnish:

Punapuu

Common Names in French:

arbre à amadou, séquoia à feuilles d'if, séquoia côtier, séquoia toujours vert

Common Names in Galician:

Sequoia

Common Names in German:

Eiben sequoie, Immergrüne Sequoie, Küsten sequoie, Küstenmammutbaum

Common Names in Greek (modern):

Σεκόγια

Common Names in Hebrew (modern):

סקוויה נאה

Common Names in Hungarian:

Fésus óriásfenyo, Örökzöld mamutfenyő, Tengerparti óriásfenyo

Common Names in Icelandic:

Strandrauðviður

Common Names in Italian:

Sequoia rosso, Sequoia sempreverde

Common Names in Japanese:

セコイア

Common Names in Kazakh:

Секвойя

Common Names in Komi:

Секвойя

Common Names in Korean:

세쿼이아

Common Names in Latin:

Sequoia

Common Names in Lithuanian:

Visžalė sekvoja

Common Names in Norwegian:

Kystsequoia

Common Names in Polish:

Sekwoja wieczniezielona

Common Names in Romanian:

Sequoia

Common Names in Russian:

Секвойя, секвойя вечнозелёная (sekvojya vechnozeljonaya)

Common Names in Slovak:

Sekvoja vždyzelená

Common Names in Spanish, Castilian:

corla, secoya, Sequoia

Common Names in Swedish:

Amerikansk sekvoja

Common Names in Tamil:

கலிபோர்னியா செம்மரம்

Common Names in Turkish:

Sekoya

Description

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Family Cupressaceae

Trees or shrubs evergreen , monoecious or dioecious. Leaves decussate or in whorls of 3, scalelike and then often dimorphic with flattened facial leaves and keeled lateral leaves, or needlelike particularly in juvenile plants , often with an abaxial resin gland . Pollen cones terminal or axillary , solitary, maturing and shed annually; microsporophylls 6-16, decussate or whorled , each bearing (2 or) 3-6(-9) pollen sacs ; pollen wingless. Seed cones usually terminal, solitary, globose , ovoid , or oblong , dehiscent or indehiscent when mature in 1st or 2nd(or 3rd) year; cone scales developing after ovules originate in bract axils; bracts almost completely enveloped by cone scales, free only at apex; ovules 1-numerous per bract axil, erect ; cone scales of mature cones 3-16, flat or peltate, woody, leathery, or succulent, 1-20-seeded. Seeds winged or not; wings derived from seed coat . Cotyledons usually 2, rarely 3-6. Germination epigeal.

Nineteen genera and ca. 125 species: worldwide; eight genera (one introduced ) and 46 species (16 endemic, 13 introduced) in China.[1]

Tribe Senecioneae

The Senecioneae are a tribe of closely related genera that can be recognized most readily by the nature of the pappus and the involucral bracts or phyllaries. The phyllaries are basically in one well developed, often partially or wholly connate series of equal length that closely envelope the head . Frequently there are a few, very much smaller and mostly randomly distributed, often necrotic-tipped bracts near the base of the main series. The pappus is of fine, soft, often pure white capillary hairs . Heads may be either discoid or radiate . -- Gerald Carr.

Genus Sequoia

Trees giant, evergreen . Branchlets terete , with obvious annual growth constrictions. Leaves alternate, mostly in 2 ranks . Adult leaves linear or linear-lanceolate to deltate, generally flattened, divergent to strongly appressed ; abaxial glands absent. Pollen cones with 6--12 sporophylls, each sporophyll with 2--6 pollen sacs . Seed cones maturing and opening in 1 season , oblong to globose ; scales persistent , 15--30, valvate , ± peltate, thick and woody. Seeds 2--7 per scale, lenticular , narrowly 2-winged; cotyledons 2(--4). x = 11.[2]

Physical Description

Species Sequoia sempervirens

Trees to ca. 110 m ; trunk to 9 m diam.; crown conic and monopodial when young, narrowed conic in age. Bark reddish brown, to ca. 35 cm thick, fibrous , ridged and furrowed . Branches downward sweeping to slightly ascending . Leaves 1--30 mm, generally with stomates on both surfaces, the free portion to 30 mm, those on leaders , ascending branchlets , and fertile shoots divergent to strongly appressed , short-lanceolate to deltate, those on horizontally spreading to drooping branchlets mostly linear to linear-lanceolate, divergent and in 2 ranks , with 2 prominent , white abaxial stomatal bands . Pollen cones nearly globose to ovoid , 2--5 mm, borne singly on short terminal or axillary stalks . Seed cones 1.3--3.5 cm. Seeds flattened, 3--6 mm, leathery. 2 n = 66. [source]

Redwood is the only naturally occurring hexaploid conifer. It is one of only a few vegetatively reproducing conifers (from stump sprouts) and possibly the tallest tree species known. Winter buds , though small, are evident. [source]

Habit: TreeGrowth Form: Single StemShape and Orientation: Erect

Flowers: Bloom Period: FallFlower Color: Yellow • Flower Conspicuous: No

Seeds: Seed per Pound: 95200 • Seed Spread Rate: Slow • Seedling Vigor: High • Fruit/Seed Abundance: High • Fruit/Seed Color: Brown • Fruit/Seed Conspicuous: Yes • Cold Stratification Required: No

Foliage: Foliage Color: Green • Foliage Porosity Summer: Dense • Foliage Porosity Winter: Dense • Foliage Texture: Medium • Fall Conspicuous: No • Leaf Retention: Yes

Size/Age/Growth

Active Growth Period: Spring and Summer • Growth Rate: Rapid • Mature Height (feet): 250.0 • Maximum Height at 20 Years (feet): 60 • Size: over 40' tall. • Vegetative Spread Rate: None • Lifespan: Lifespan

Habitat

Coastal redwood forests ; generally below 300 m , occasionally to 1000 m[3].

Typically found at an altitude of 0 to 4,653 meters (0 to 15,266 feet).[4]

Ecology: List of Habitats :

Biology

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Reproduction

Duration: PerennialCoppice Potential: Yes • Progagated by Bulbs: No • Propagated by Bare Root: Yes • Propagated by Container: Yes • Propagated by Corms: No • Propagated by Cuttings: Yes • Propagated by Seed: Yes • Propagated by Sod: No • Propagated by Sprigs: No • Propagated by Tubers: No • Fruit/Seed Period Begin: SpringFruit/Seed Period End: FallFruit/Seed Persistence: Yes

Growth

Culture: Space 20-30' apart.

Soil: Adapted to Medium Textured: Adapted to Medium Textured Soils • Adapted to Coarse Textured Soils: Yes • Anaerobic Tolerance: None • Salinity Tolerance: None • CaCO3 Tolerance: Low • Minimum pH: 5.0 • Maximum pH: 7.0 • Fertility Requirement: Low

Sunlight: Sun Exposure: Sun to Partial Shade. • Shade Tolerance: Tolerant

Moisture: Drought Tolerance: Low • Minimum Precipitation: 20 • Maximum Precipitation: 200 • Moisture Use: Medium

Temperature: Minimum Temperature (F): 7 • Minimum Frost Free Days: 180 • Cold Hardiness: 8a, 8b, 9a, 9b. (map)

Taxonomy

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Synonyms

Descr. Pinus 2: 24. 1824 • Gigantabies taxifolia J. Nelson • Taxodium sempervirens D. Don in Lambert

Notes

Publishing author : Endl. Publication : Syn. Conif. 198. 1847 [May-Jun 1847]

Name Status: Accepted Name .

Comment: Conservation status: NT, Habit: Tree

Last scrutiny: 5-Jun-2008

Was formerly included under the family Taxodiaceae. The Taxodiaceae is now merged with Cupressaceae (see Farjon 2001).[5].

Similar Species

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Members of the genus Sequoia

ZipcodeZoo has pages for 10 species, subspecies, varieties, forms, and cultivars in this genus:

S. sempervirens (California Redwood) · S. sempervirens f. glauca (Blue Coast Redwood) · S. sempervirens 'Adpressa' (Coast Redwood) · S. sempervirens 'Aptos Blue' (Aptos Blue Coast Redwood) · S. sempervirens 'Cantab' (Coast Redwood) · S. sempervirens 'Filoli' (Coast Redwood) · S. sempervirens 'Monty' (Majestic Beauty® Coast Redwood) · S. sempervirens 'Santa Cruz' (San Cruz Redwood) · S. sempervirens 'Simpson's Silver' (Simpson's Silver Coast Redwood) · S. sempervirens 'Soquel' (Coast Redwood)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 19, 2007:

Identifiers

Footnotes

  1. Liguo Fu, Yong-fu Yu, Robert P. Adams & Aljos Farjon "Cupressaceae". in Flora of China Vol. 4 Page 62. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. Frank D. Watson "Sequoia". in Flora of North America Vol. 2. Oxford University Press. Online at EFloras.org. [back]
  3. "Sequoia sempervirens". in Flora of North America Vol. 2. Oxford University Press. Online at EFloras.org. [back]
  4. Mean = 166.250 meters (545.440 feet), Standard Deviation = 403.630 based on 499 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
  5. Farjon, A. & members of the Conifer Specialist Group 2006. Sequoia sempervirens. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloaded on 04 February 2012. [back]
Last Revised: 2014-11-20