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Pinus latteri

Pinus latteri
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Product Information
Specification

Scientific name: Pinus latteri F.Mason  1849

Synonyms: Pinus ikedae Yamam., Pinus merkusiana Cooling & Gaussen, Pinus merkusii var. latteri (Mason) Silba, Pinus merkusii subsp. latteri (Mason) D.Z.Li, Pinus merkusii var. tonkinensis (A.Chev.) Gaussen ex Bui, Pinus tonkinensis A.Chev.

Common names: Tenasserim pine, Nan ya song (Chinese), Son-songbai (Thai), Tinshu (Burmese), Thông nhựa (Vietnamese)

 

Description

Tree to 30-45(-65) m tall, with trunk to 1(-2) m in diameter. Bark thick, dark grayish brown, deeply ridged and furrowed, with the ridges breaking up into scaly, square blocks. Crown open, broadly conical to dome-shaped or flattened, with numerous spreading, horizontal to upwardly angled branches well clothed with foliage at the ends. Twigs dark brown, hairless, rough with the bases of scale leaves. Buds 1-2 cm long, not resinous. Needles in bundles of two, each needle 19-27 cm long, straight, thin and flexible or slightly thicker and a little stiff, falling during the second year, bright green. Individual needles with prominent lines of stomates on both faces, and two resin canals at the corners midway between the two-stranded midvein and the needle surface and sometimes with a third linking the inner face and midvein. Sheath (10-)12-18(-20) mm long, persisting and falling with the bundle. Pollen cones (2-)4-5 cm long, orange-yellow. Seed cones 6.5-13 cm long, very narrowly egg-shaped when closed, approaching spherical when open, with 45-75 seed scales, green before maturity, ripening shiny reddish brown, opening widely to release the seeds and then falling with the slender stalk about 1 cm long. Seed scales wedge- to paddle-shaped, the exposed face equally diamond-shaped to barely five-sided, distinctly if modestly pyramidally projecting, with fine, radiating wrinkles, crossed by a sharp horizontal ridge topped by a large, usually indented, prickleless umbo. Seed body 5-8 mm long, the easily detachable wing another 17-25 mm longer.

Recorded from China: Guangdong (Hainan Island), Guangxi; SE Myanmar (Burma), Cambodia, Lao PDR, Thailand, and Vietnam. This species has a sporadic and uneven distribution throughout most of mainland southeast Asia; 900-1200(-2,000) m.

 

Conservation Status

Red List Category & Criteria: Near Threatened

(There has been a decrease in area of occupancy (AOO), quality of habitat, and number of mature trees due to exploitation and deforestation, but there is insufficient data to quantify this across its range. It is suspected that the decline is approaching 30% (i.e. close to qualifying for threatened under criterion A2cd). In the absence of better information, an assessment of Near Threatened is appropriate)

 

References

Farjon, A. (2010). A Handbook of the World's Conifers. Koninklijke Brill, Leiden.

Eckenwalder, J.E. (2009) Conifers of the World: The Complete Reference. Timber Press, Portland.

IUCN Red List of Threatened Species, International Union for Conservation of Nature and Natural Resources. Cambridge, UK /Gland, Switzerland

 

Copyright © Aljos Farjon, James E. Eckenwalder, IUCN, Conifers Garden. All rights reserved.

Product CodePIN041K54
Propagation0.0000


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