Siberian Larch

Siberian Larch

Taxobox
name = Siberian Larch
status = LR/lc | status_system = IUCN2.3



image_width = 250px
image_caption = Siberian Larch in Montreal Botanic Gardens
regnum = Plantae
divisio = Pinophyta
classis = Pinopsida
ordo = Pinales
familia = Pinaceae
genus = "Larix"
species = "L. sibirica"
binomial = "Larix sibirica"
binomial_authority = Ledeb.

The Siberian Larch or Russian Larch ("Larix sibirica"; syn. "L. russica") is a frost-hardy tree native to western Russia, from close to the Finnish border east to the Yenisei valley in central Siberia, where it hybridises with the Dahurian Larch "L. gmelinii" of eastern Siberia; the hybrid is known as "Larix × czekanowskii".

It is a medium-size to large deciduous coniferous tree reaching 20-40 m tall, with a trunk up to 1 m diameter. The crown is conic when young, becoming broad with age; the main branches are level to upswept, with the side branches often pendulous. The shoots are dimorphic, with growth divided into long shoots (typically 10-50 cm long) and bearing several buds, and short shoots only 1-2 mm long with only a single bud. It is most easily distinguished from the closely related European Larch by the shoots being downy (hairless in European Larch). The leaves are needle-like, light green, 2-4 cm long, and turn bright yellow before they fall in the autumn, leaving the pale yellow-buff shoots bare until the next spring.

The male and female cones are borne separately on the same tree; pollination is in early spring. The male cones are solitary, yellow, globose to oblong, 4-8 mm diameter, and produce wingless pollen. The mature female cones are erect, ovoid-conic, 2-4 cm long, with 30-70 erect or slightly incurved (not reflexed) and downy seed scales; they are green variably flushed red when immature, turning brown and opening to release the winged seeds when mature, 4-6 months after pollination. The old cones commonly remain on the tree for many years, turning dull grey-black. The minimum seed-bearing age is 10-15 years.

Uses

Because of its rot resistance, larch wood is especially valuable for posts, poles, railroad tie sleepers, and mine props.

It is also used in many velodromes around the world as the track surface including the Manchester Velodromecite web | title = Manchester Velodrome Track to be Replaced | work = Manchester Track News | url = http://www.britishcycling.org.uk/web/site/BC/tra/News2006/20061101_manchester_refurb.asp | publisher= britishcycling.org.uk | date = 2007-11-01 | accessdate=2008-02-28] and the Velodrome Krylatskoye in Moscow. [cite web | title = UCI World Cup Classics | work = UCI | url = http://www.uci.ch/imgArchive/Track/World%20Cup/2006-2007/info%20g%C3%A9n%C3%A9%20Moscou%20anglais.pdf | accessdate=2008-02-28]

It is grown in Canada and the northern United States to a limited extent, first cultivated there in 1806.

It is faster-growing than many other coniferous trees in cold regions, but requires full sunlight. When grown in plantations it should be kept widely spaced, and intensive thinning is required.

Notes

References

*

External links

* [http://www.pinetum.org/cones/mpfcones.htm Siberian Larch cones photographs]


Wikimedia Foundation. 2010.

Игры ⚽ Поможем сделать НИР

Look at other dictionaries:

  • Siberian larch — sibirinis maumedis statusas T sritis vardynas apibrėžtis Pušinių šeimos medieninis, pluoštinis augalas (Larix sibirica), paplitęs Sibire ir rytų Azijoje. atitikmenys: lot. Larix sibirica angl. Russian larch; Siberian larch vok. sibirische Lärche… …   Lithuanian dictionary (lietuvių žodynas)

  • Siberian larch — noun medium sized larch of northeastern Russia and Siberia having narrowly conic crown and soft narrow bright green leaves; used in cultivation • Syn: ↑Larix siberica, ↑Larix russica • Hypernyms: ↑larch, ↑larch tree * * * noun Usage: usually… …   Useful english dictionary

  • Larch — Taxobox name = Larch image width = 240px image caption = Larix decidua in autumn regnum = Plantae divisio = Pinophyta classis = Pinopsida ordo = Pinales familia = Pinaceae genus = Larix genus authority = Philip Miller subdivision ranks = Species… …   Wikipedia

  • larch tree — noun any of numerous conifers of the genus Larix all having deciduous needlelike leaves • Syn: ↑larch • Hypernyms: ↑conifer, ↑coniferous tree • Hyponyms: ↑American larch, ↑tamarack, ↑ …   Useful english dictionary

  • Siberian Grouse — Male in display Conservation status …   Wikipedia

  • Dahurian Larch — Taxobox name = Dahurian Larch status = LR/lc | status system = IUCN2.3 image width = 240px image caption = Dahurian Larch forest, Kolyma region, arctic northeast Siberia regnum = Plantae divisio = Pinophyta classis = Pinopsida ordo = Pinales… …   Wikipedia

  • Russian larch — sibirinis maumedis statusas T sritis vardynas apibrėžtis Pušinių šeimos medieninis, pluoštinis augalas (Larix sibirica), paplitęs Sibire ir rytų Azijoje. atitikmenys: lot. Larix sibirica angl. Russian larch; Siberian larch vok. sibirische Lärche… …   Lithuanian dictionary (lietuvių žodynas)

  • Central Siberian Plateau — The Central Siberian Plateau ( ru. Среднесибирское плоскогорье) is made up of sharply demarcated surfaces of varying altitudes occupying most of Siberia between the Yenisei and Lena rivers. It extends over an area of 3.5 million km². The highest… …   Wikipedia

  • dahurian larch — dəˈh(y)u̇rēən noun Etymology: Dahuria, region of southern Siberia + English an : a Siberian tree of very irregular growth habit that is sometimes cultivated for its bright green foliage …   Useful english dictionary

  • Siberia — Siberian redirects here. For the cat breed, see Siberian (cat). This article is about Siberia as a whole. For the federal district, see Siberian Federal District. For other uses, see Siberia (disambiguation). Coordinates: 60°0′N 105°0′E /  …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”