Interesting Facts
Description
Family Pinaceae
Trees
or rarely shrubs
, evergreen
or deciduous, monoecious. Branchlets
often dimorphic
: long branchlets with clearly spirally arranged
, sometimes scalelike leaves; short branchlets often reduced to slow growing lateral
spurs bearing dense clusters
of leaves at apex. Leaves solitary or in bundles of (1 or) 2-5(-8) when basally subtended by a leaf sheath
; leaf blade linear
or needlelike, not decurrent. Cones unisexual
. Pollen cones solitary or clustered, with numerous
spirally arranged microsporophylls
; microsporophyll with 2 microsporangia; pollen usually 2-saccate (nonsaccate in Cedrus, Larix, Pseudotsuga, and most species of Tsuga) . Seed cones erect
or pendulous, maturing in 1st, 2nd, or occasionally 3rd year, dehiscent
or occasionally indehiscent, with many spirally arranged ovulate
scales
and bracts; ovulate scales usually smaller than bracts at pollination, with 2 upright ovules adaxially, free
or only basally adnate
with bracts, maturing into seed scales. Seed scales appressed
, woody or leathery, variable in shape
and size, with 2 seeds adaxially, persistent
or deciduous after cone maturity. Bracts free or adnate basally with seed scales, well developed or rudimentary
, exserted or included
. Seeds terminally winged
(except in some species of Pinus) . Cotyledons 2-18. Germination hypogeal or epigeal. 2n = 24* (almost always) .
Ten or eleven genera and ca.
235 species: N hemisphere; ten genera (two endemic) and 108 species (43 endemic, 24 introduced
) in China.
Species of the Pinaceae are among the most valuable and commercially important plants
in the world. Most species are trees, and are often excellent sources of lumber, wood
products, and resins; many are cultivated for afforestation
and as ornamentals
.[1]
Taxonomy
- Domain:
Eukaryota
(
)
- Whittaker & Margulis,1978
- eukaryotes
- Kingdom:
Plantae
()
- Haeckel, 1866
- Plants
- Subkingdom:
Viridaeplantae
()
- Cavalier-Smith, 1981
- Phylum:
Magnoliophyta
()
- Sinnott, 1935 ex Cavalier-Smith, 1998
- Flowering Plants
- Subphylum:
Euphyllophytina
()
- Infraphylum:
Radiatopses
()
- Kenrick & Crane, 1997
- Infraphylum:
Radiatopses
(
- Subphylum:
Euphyllophytina
(
- Phylum:
Magnoliophyta
(
- Subkingdom:
Viridaeplantae
(
- Kingdom:
Plantae
(
Similar Species
Members of the genus Cembra
ZipcodeZoo has pages for 0 species, subspecies, varieties, forms, and cultivars in this genus:
More Info
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Further Reading
- Cheng Wan-chün, Fu Li-kuo, Law Yu-wu, Fu Shu-hsia, Wang Wen-tsai, Chu Cheng-de, Chao Chi-son & Chen Chia-jui. 1978. Pinaceae. In: Cheng Wan-chün & Fu Li-kuo, eds., Fl. Reipubl. Popularis Sin. 7: 32-281.
Notes
Contributors
Identifiers
- Biodiversity Heritage Library NamebankID: 10612397
- Global Biodiversity Information Facility Taxonkey: 15380045
- Globally Unique Identifier: urn:lsid:ipni.org:names:261808-1
- International Plant Names Index (IPNI) ID: 261808-1
- Zipcode Zoo Species Identifier: 3348455
Footnotes
- Liguo Fu, Nan Li, Thomas S. Elias & Robert R. Mill "Pinaceae". in Flora of China Vol. 4 Page 11. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
