- Qiaojia Pine
Taxobox
name = Qiaojia Pine
status = CR
status_system = iucn2.3
regnum =Plant ae
divisio =Pinophyta
classis = Pinopsida
ordo =Pinales
familia =Pinaceae
genus = "Pinus"
subgenus = "Ducampopinus"
species = "P. squamata"
binomial = "Pinus squamata"
binomial_authority = X.W. LiQiaojia Pine ("Pinus squamata"; zh: 巧家五针松) is a
critically endangered [IUCN, 2006]pine native to a single locality consisting of about 20 trees in northeastYunnan ,China , at about 2200 m elevation. It was only discovered in1991 and is critically endangered. Its mature height is unknown because none of the living trees are yet mature, but they could possibly grow to 30 m or greater. Its habitat is open secondary woodland, scrub, and grassland mixed withYunnan Pine .Qiaojia Pine has a conic crown with flaky pale gray-green bark becoming dark brown with age, similar to the closely related
Lacebark Pine . The shoots are reddish to greenish brown and may be pubescent or glabrous. The leaves are drooping in fascicles of 4 or 5, 9-17 cm long by 0.8 mm wide, glossy green above with whitestoma tal bands on the underside. The cones are conic to ovoid, reddish brown, and 9 cm long by 6 cm broad when open. They open at maturity in September to October of the second year to release the oblong black seeds, 4-5 mm long with a 16 mm wing. [Gymnosperm, 2008]Qiaojia Pine was discovered in April 1991 by Pangzhao J.Q. It was studied later that year and described the following year by Li Xiang-Wang. It shows similarities to
Rzedowski's Pinyon and some otherpinyon pine s.Conservation
"P. squamata" is the rarest of world pine species, with the
endangered Torrey Pine , "Pinus torreyana ", being the next most rare pine species. [C.M.Hogan, 2008]Line notes
References
* Listed as Critically Endangered (CR D v2.3)
* Gymnoperm database (2008) "Pinus squamata" [http://www.conifers.org/pi/pin/squamata.htm Gymnosperm Database]
* C.Michael Hogan (2008) "Torrey Pine: Pinus torreyana", Globaltwitcher, ed. Nicklas Stromberg [http://www.globaltwitcher.com/artspec.asp?thingid=62498]External links
* [http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=210001652 Flora of China]
* [http://www.pinetum.org/cones/PNDucampopinus.htm Photo of cones (scroll ¼-way down)]
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