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Publicado en: Species Plantarum 2: 1000. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Datos del Proyecto Nombre (Last Modified On 9/21/2011)
Aceptación : Accepted
Project data     (Last Modified On 2/2/2012)
Notas:

Over 90 species mainly in the northern hemisphere and in mountains of the northern tropics. Usually wind-pollinated and wind-dispersed.

Pinus canariensis C. Sm. ((אורן קנרי and Pinus pinea L. ((אורן הצנובר both are planted as garden, parks and forest trees, and are sometimes escaped from cultivation. The peeled seeds of the latter are edible.


 

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Evergreen trees, usually with more-or-less whorled branches. Buds covered with imbricated scales. Shoots of two forms : long shoots with deciduous leaves, scale-like and woody at base, and short shoots arising from axils of the scale-like leaves and bearing fascicles of 2, 3 or 5 green, needle-like leaves, surrounded at base by scarious scales forming a sheath. Staminate cones axillary, clustered at base of young shoots, catkin-like, consisting of spirally arranged scales each with 2 pollen sacs. Pollen grains with 2 air sacs. Ovulate cones lateral or subterminal in the upper part of the branches, maturing mostly in the third year; ovuliferous scales spirally arranged, persistent, leathery or woody, with enlarged apex (apophysis), mostly bearing a dorsal or terminal protuberance (umbo); bracts distinct, very small. Seeds usually winged; cotyledons 4-15.

 

 

 
 
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