Pinus sibirica
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| Siberian pine Pinus sibirica |
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P. sibirica
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| Pinus sibirica Du Tour
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Pinus sibirica, or Siberian pine, in the family Pinaceae is a species of pine tree that occurs in Siberia from 58°E in the Ural Mountains east to 126°E in the Stanovoy Range in southern Sakha Republic, and from Igarka at 68°N in the lower Yenisei valley, south to 45°N in central Mongolia.
Contents
Distribution
In the north of its range, it grows at low altitudes, typically 100–200 m, whereas further south, it is a mountain tree, growing at 1,000-2,400 m altitude. It often reaches the alpine tree line in this area. The mature size is up to 30–40 m height, and 1.5 m trunk diameter. Its maximum lifetime is 800–850 years.
Description
Pinus sibirica is a member of the white pine group, Pinus subgenus Strobus, and like all members of that group, the leaves ('needles') are in fascicles (bundles) of five, with a deciduous sheath. They are 5–10 cm long. Siberian pine cones are 5–9 cm long. The 9–12 mm long seeds have only a vestigial wing and are dispersed by spotted nutcrackers.
Siberian pine is treated as a variety or subspecies of the very similar Swiss pine (Pinus cembra) by some botanists. It differs in having slightly larger cones, and needles with three resin canals instead of two in Swiss pine.
Like other European and Asian white pines, Siberian pine is very resistant to white pine blister rust (Cronartium ribicola). This fungal disease was accidentally introduced from Europe into North America, where it has caused severe mortality in the American native white pines in many areas, notably the closely related whitebark pine. Siberian pine is of great value for research into hybridisation and genetic modification to develop rust resistance in these species.
Cultivation
Siberian pine, Pinus sibirica, is a popular ornamental tree in parks and large gardens where the climate is cold, such as central Canada, giving steady though not fast growth on a wide range of sites. It is very tolerant of severe winter cold, hardy down to at least –60 °C, and also of wind exposure. The seeds are also harvested and sold as pine nuts.
"Siberian cedar"
The Russian name Сибирский кедр (tr. Sibirsky kedr) is often mis-translated in English as "Siberian cedar"; references to "cedar" in texts translated from Russian usually refer to this tree or related pines, not to cedars.
Chemistry
Pinostilbene is a stilbenoid found, along with resveratrol, in the bark of P. sibirica.[2]
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Hydroxystilbenes from the bark of Pinus sibirica. N. A. Tyukavkina, A. S. Gromova, V. I. Lutskii and V. K. Voronov, Chemistry of Natural Compounds, September 1972, Volume 8, Issue 5, pages 570-572, doi:10.1007/BF00564298
- Conifer Specialist Group (1998). Pinus sibirica. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 12 May 2006.
External links
- Pinetum.org: Pinus sibirica cone picture - (scroll to bottom of page)
Media related to Lua error in package.lua at line 80: module 'strict' not found. at Wikimedia Commons
Data related to Pinus sibirica at Wikispecies
