Biology:Pinus sibirica

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Short description: Species of conifer

Siberian pine
Pinus sibirica
Just a tree against the background of blue sky. (Просто дерево на фоне голубого неба.) - panoramio.jpg
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Gymnospermae
Division: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Pinaceae
Genus: Pinus
Subgenus: P. subg. Strobus
Section: P. sect. Quinquefoliae
Subsection: P. subsect. Strobus
Species:
P. sibirica
Binomial name
Pinus sibirica
Du Tour
Synonyms[2]
  • Pinus arolla Petrov
  • Pinus cembra f. coronans (Litv.) Krylov
  • Pinus cembra subsp. sibirica (Du Tour) A.E.Murray
  • Pinus cembra var. sibirica (Du Tour) A.E.Murray
  • Pinus cembra var. sibirica (Du Tour) G.Don
  • Pinus cembra subsp. sibirica (Du Tour) Krylov
  • Pinus coronans Litv.
  • Pinus hingganensis H.J.Zhang

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.

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.

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.

Cultivation

Young trees growing in a park

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, which in Russia are marketed as Cedar nuts (Russian: Кедровые орехи).

"Siberian cedar"

The Russian name Сибирский кедр (tr. Sibirsky kedr)[3] is usually translated in English as “Siberian cedar.” References to “cedar” or "dwarf cedar" in texts translated from Russian usually refer to this tree or related pines, not to true cedars.

Chemistry

Pinostilbene is a stilbenoid found, along with resveratrol, in the bark of P. sibirica.[4]

See also

References

  1. Farjon, A. (2013). "Pinus sibirica". The IUCN Red List of Threatened Species (IUCN) 2013: e.T42415A2978539. doi:10.2305/IUCN.UK.2013-1.RLTS.T42415A2978539.en. http://www.iucnredlist.org/details/42415/0. Retrieved 13 December 2017. 
  2. "The Plant List: A Working List of All Plant Species". http://www.theplantlist.org/tpl/record/kew-2562160. 
  3. "Кедровая сосна" (in Russian). Great Russian Encyclopedia. 13. Moscow. 2009. pp. 783. ISBN 978-5-85270-344-6. https://bigenc.ru/biology/text/2058854. Retrieved 2018-01-16. 
  4. 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

External links

Wikidata ☰ Q774829 entry