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Published In: A Natural Arrangement of British Plants 2: 222, 225. 1822. (10 Jan 1822) (Nat. Arr. Brit. Pl.) Name publication detailView in Biodiversity Heritage Library

Project Name Data (Last Modified On 9/21/2011)
Acceptance : Accepted
Project data     (Last Modified On 7/19/2018)
Notes: About 20 genera and about 125 species, mainly in temperate and subtropical regions of the northern hemisphere, some in tropical mountains. Two or three genera are represented in Flora Palaestina.


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Evergreen, mostly monoecious trees or shrubs with resin ducts. Buds naked. Leaves opposite or in whorls of 3-4, frequently dimorphic: the juvenile ones larger, needle-like or subulate; adult leaves small, scale-like, rarely needle-like. Reproductive organs in small cones with opposite or ternately whorled scales. Staminate cones terminal or axillary, with 4-8 whorls of scales each with 2-6 pollen sacs (microsporangia) on the under-surface; pollen grains without air sacs. Ovulate cones terminal or lateral on short branches, scales usually few, each with 1 to many erect ovules on upper surface, sterile bract united with scale; mature cone mostly woody, sometimes fleshy and berry-like. Seeds sometimes narrowly winged; cotyledons 2, rarely 5-6.



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