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Taxodium,Pinophyta,Pinopsida,Pinales,Cupressaceae,Taxodioideae,Taxodium ascendens,Taxodium distichum

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Taxodium

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Taxodium

Bald Cypress forest
in a central Mississippi lake
Scientific classification
Kingdom: Plantae

Division: Pinophyta

Class: Pinopsida

Order: Pinales

Family: Cupressaceae

Subfamily: Taxodioideae 1

Genus: Taxodium
Rich.
Species
Taxodium ascendens Pond Cypress
Taxodium distichum Bald Cypress
Taxodium mucronatum Montezuma Cypress
Taxodium (pronounced /tækˈsoʊdiəm/ ) 2 is a genus of one to three species (depending on taxonomic opinion) of extremely flood -tolerant conifers in the cypress family, Cupressaceae . The generic name is derived from the Latin word taxus, meaning " yew ," and the Greek word εἶδος (eidos), meaning "similar to." 3 Within the family, Taxodium is most closely related to Chinese Swamp Cypress (Glyptostrobus pensilis) and Sugi (Cryptomeria japonica). Species of Taxodium occur in the southern part of the North American continent and are deciduous in the north and semi-evergreen to evergreen in the south. They are large trees , reaching 100–150 ft (30–46 m) tall and 2–3 m (6.6–9.8 ft) (exceptionally 11 m/36 ft) trunk diameter. The needle-like leaves , 0.5–2 cm (0.20–0.79 in) long, are borne spirally on the shoots , twisted at the base so as to appear in two flat rows on either side of the shoot. The cones are globose, 2–3.5 cm (0.79–1.4 in) diameter, with 10-25 scales, each scale with 1-2 seeds ; they are mature in 7-9 months after pollination , when they disintegrate to release the seeds. The male ( pollen ) cones are produced in pendulous racemes , and shed their pollen in early spring. Contents Species Uses Evolution References External links
Species The three taxa of Taxodium are treated here as distinct species, though some botanists treat them in just one or two species, with the others considered as varieties of the first described. The three are distinct in ecology , growing in different environments, but hybridise where they meet. Taxodium ascendens Brongn. Pond Cypress The Pond Cypress occurs within the range of Bald Cypress, but only on the southeastern coastal plain from North Carolina to Louisiana . It occurs in still blackwater rivers, ponds and swamps without silt -rich flood deposits. Taxodium distichum ( L. ) Rich. Bald Cypress The most familiar species in the genus is the Bald Cypress, native to much of the southeastern United States , from Delaware to Texas , especially Louisiana and inland up the Mississippi River to southern Indiana . It occurs mainly along rivers with silt-rich flood deposits. Taxodium mucronatum Ten. , 1853 Montezuma Cypress, Ahuehuete The Montezuma Cypress occurs from the Lower Rio Grande Valley south to the highlands of southern Mexico , and differs from the other two species in being substantially evergreen. A specimen in Santa María del Tule, Oaxaca , the Árbol del Tule , is 43 m (141 ft) tall and has the greatest trunk thickness of all trees, 11.42 m (37.5 ft) in diameter. It is a riparian tree, occurring on the banks of streams and rivers, not in swamps like the Bald and Pond Cypresses. Uses Cypress knees at low water, Wee Tee Lake, South Carolina The trees are especially prized for their wood , of which the heartwood is extremely rot and termite resistant. The heartwood contains a sesquiterpene called cypressene, 4 which acts as a natural preservative . It takes decades for cypressene to accumulate in the wood, so lumber taken from old-growth trees is more rot resistant than that from second-growth trees. 5 However, age also increases susceptibility to Pecky Rot fungus ( Stereum taxodii ), which attacks the heartwood and causes some damaged trees to become hollow and thus useless for timber. Bald Cypress wood was much used in former days in the southeastern United States for roof shingles . 6 The shredded bark of these trees is used as a mulch , although the current harvest rate for this product is unsustainable and is causing substantial environmental damage especially in the south where cutting boundaries are not being followed. Evolution Fossil leave of Taxodium dubium, 8 Mio. years old, Hambach lignite open cast mine, Germany In earth's history Taxodium was widespread. It is known since the Jurassic and can be found as fossil e.g. in layers from Tertiary times. References ^ "Cupressaceae Rich. ex Bartling 1830" . The Gymnosperm Database. http://www.conifers.org/cu/index.htm . ^ Sunset Western Garden Book, 1995:606–607 ^ Everett, Thomas H. (1982). The New York Botanical Garden Illustrated Encyclopedia of Horticulture . 10. Taylor & Francis. p. 3299. 9780824072407 . http://books.google.com/books?id=KeGzp-YXrPYC& . ^ Buchanan, M. A. (1965-10-07). The Fatty Materials in Southern Cypress Wood . Institute of Paper Chemistry. p. 3. http://smartech.gatech.edu/dspace/bitstream/1853/1291/1/2077_002_1969.pdf . ^ Sternberg, Guy ; James Wesley Wilson (2004). Native trees for North American landscapes: from the Atlantic to the Rockies . Timber Press. p. 476. 9780881926071 . http://books.google.com/books?id=qOq5v4fd1kcC&source=gbs_navlinks_s . ^ Wilhite, L. P.; J. R. Toliver. "Baldcypress" . Silvics of North America. United States Forest Service. http://www.na.fs.fed.us/pubs/silvics_manual/volume_1/taxodium/distichum.htm . External links Gymnosperm Database Taxodium Corkscrew Swamp Sanctuary website National Audubon Society, undated. Corkscrew Swamp Sanctuary. A Companion Field Guide. Artype Inc., Ft. Myers. 25 p. Retrieved from " http://en.wikipedia.org/Taxodium/Taxodium -1.htm" Categories : Taxodium Views Discussion Edit this page History Personal tools Try Beta Log in / create account Navigation Contents Featured content Current events Random article Search   Interaction About Wikipedia Community portal Recent changes Contact Wikipedia Donate to Wikipedia Help Toolbox What links here Related changes Upload file Special pages Printable version Permanent link Cite this page Languages Dansk Deutsch Español Esperanto Français 한국어 Italiano Magyar Nederlands ‪Norsk (bokmål)‬ Polski Português Română Русский Suomi Українська Tiếng Việt This page was last modified on 6 February 2010 at 01:40.
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Taxodium

Taxodium David Robson: Cypress trees are fussy but hardy - Corning LeaderDavid Robson: Cypress trees are fussy but hardy - Corning Leader Wed, 10 Mar 2010 18:17:07 GMT+00:00

Corning LeaderDavid Robson: Cypress trees are fussy but hardyCorning LeaderBotanically, both cypresses are Taxodium distichum. Pond cypress is actually a variety of bald cypress and carries the varietal name of imbricarium. ...altro »

Taxodium David Robson: Cypress trees are fussy but hardy - The State Journal-RegisterDavid Robson: Cypress trees are fussy but hardy - The State Journal-Register Sat, 06 Mar 2010 05:09:49 GMT+00:00

David Robson: Cypress trees are fussy but hardyThe State Journal-RegisterBotanically, both cypresses are Taxodium distichum. Pond cypress is actually a variety of bald cypress and carries the varietal name of imbricarium. ...altro »

Taxodium Gardening with the Masters: March Q&A - News-Herald.comGardening with the Masters: March Q&A - News-Herald.com Sun, 07 Mar 2010 05:19:35 GMT+00:00

Gardening with the Masters: March Q&ANews-Herald.comIf the soil is somewhat acidic and fairly well drained, you might consider the bald cypress, Taxodium distichum, which also has a pyramidal shape. ...

Taxodium Green Scene: Some plants will welcome boggy soil created by recent snowstorms - Washington PostGreen Scene: Some plants will welcome boggy soil created by recent snowstorms - Washington Post Fri, 26 Feb 2010 16:41:24 GMT+00:00

Green Scene: Some plants will welcome boggy soil created by recent snowstormsWashington PostIf you're looking for a tall, stately tree that loves water, the common baldcypress (Taxodium distichum) is a possibility. It's a deciduous conifer that ...

Taxodium Good For You, Indian River County, Feb. 21 - Vero Beach Press-Journal (subscription)Good For You, Indian River County, Feb. 21 - Vero Beach Press-Journal (subscription) Sun, 21 Feb 2010 22:45:03 GMT+00:00

Good For You, Indian River County, Feb. 21Vero Beach Press-Journal (subscription)Bald Cypress (Taxodium Distichum) liners, which are about 18” tall, were purchased by Indian River County residents last month. The district sold the trees ...

Taxodium Local news briefs - News ChiefLocal news briefs - News Chief Tue, 16 Feb 2010 13:41:20 GMT+00:00

Local news briefsNews Chief... Cornus Florida (flowering dogwood) Liquidambar Styraciflua (sweetgum), Quercus Nigra (water oak) and Taxodium Distichum (bald cypress). ...

Taxodium

Taxodium

Taxodium

Taxodium


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