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'''''Dehaasia''''' is a genus of [[evergreen]] or [[deciduous]] trees or shrubs belonging to the Laurel family, [[Lauraceae]], with 53 [[species]].{{cn|date=November 2012}} native to continental [[Asia]], from India to China, and islands of Borneo, New Guinea, and Indonesia.
'''''Dehaasia''''' is a genus of [[evergreen]] or [[deciduous]] trees or shrubs belonging to the laurel family, [[Lauraceae]], with 53 [[species]]{{cn|date=November 2012}} native to continental [[Asia]], from India to China, and islands of Borneo, New Guinea, and Indonesia.


They are [[hermaphroditic]] [[shrub]]s, or [[tree]]s of medium size up to 5 m tall.<ref>http://flora.huh.harvard.edu/china/PDF/PDF07/Dehaasia.pdf</ref> in tropical montane forest, lowland rainforest,<ref>http://www.wildsidephotography.ca/gallery/Database/26000_G</ref> subtropical coastal lowland rainforest, [[Cloud forest]], and [[Laurel forest]].
They are [[hermaphroditic]] [[shrub]]s, or [[tree]]s of medium size up to 5 m tall.<ref>http://flora.huh.harvard.edu/china/PDF/PDF07/Dehaasia.pdf</ref> in tropical montane forest, lowland rainforest,<ref>http://www.wildsidephotography.ca/gallery/Database/26000_G</ref> subtropical coastal lowland rainforest, [[cloud forest]], and [[laurel forest]].
About 38<ref>http://www.theplantlist.org/browse/A/Lauraceae/Dehaasia/</ref> species accepted in Cambodia, China, Indonesia, Laos, Malaysia, Myanmar, Philippines, Thailand, Vietnam, with the center of diversity in west Malaysia; three species in China, two endemic.<ref name="harvard1">http://flora.huh.harvard.edu/china/PDF/PDF07/Dehaasia.pdf</ref>
About 38<ref>http://www.theplantlist.org/browse/A/Lauraceae/Dehaasia/</ref> accepted species are found in Cambodia, China, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Thailand, and Vietnam, with the center of diversity in west Malaysia; three species occur in China, two endemic.<ref name="harvard1">http://flora.huh.harvard.edu/china/PDF/PDF07/Dehaasia.pdf</ref>
[[Alseodaphne]], Dehaasia and [[Nothaphoebe]] are, morphologically, three closely related but different genera in a subgroup near to [[Persea]] genus.
''[[Alseodaphne]], Dehaasia'' and ''[[Nothaphoebe]]'' are, morphologically, three closely related but different genera in a subgroup near to ''[[Persea]]'' genus.


The [[leaf (botany)|leaves]] are bright green to dark green, shiny and alternate.<ref>http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=109471</ref><ref>http://www.efloras.org/object_page.aspx?object_id=112365&flora_id=2</ref>
The [[leaf (botany)|leaves]] are bright green to dark green, alternate,<ref>http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=109471</ref><ref>http://www.efloras.org/object_page.aspx?object_id=112365&flora_id=2</ref> oblong to lanceolate to almost elliptical, acuminate, and slightly cut at the base. They are leathery in texture, glossy on both sides, dark green on the upper face more intense, sometimes with small blisters on the underside.
The leaves are oblong to lanceolate to almost elliptical, acuminate and slightly cut at the base. The leaves are leathery in texture, glossy on both sides, dark green on the upper face more intense, sometimes with small blisters on the underside.


The trunk is rough and irregular, covered usually with a paper [[bark]] whitish or gray, smooth and easy to peel , with the [[xylem]] yellow.
The trunk is rough and irregular, covered usually with a paper [[bark]], whitish or gray, smooth and easy to peel , with the [[xylem]] yellow. Some species with multiple stems or trunks are strongly branched from the base. The young branches are slender, angular, smoothly integumented, with visible signs of scars and sometimes reddish areas of recent growth. The branchlets are yellow-white at first, but a little gray later, thin, glabrous, warty, lenticellated with distinctive leaf scars, the young more or less angled.
Some species with multiple stems or trunks strongly branched from the base.
The young branches are slender, angular, with smooth integument, with visible signs of scars and sometimes reddish areas of recent growth.

The branchlets yellow-white at first, but a little gray later, thin, glabrous, warty, lenticellate with distinctive leaf scars, the young more or less angled.
The [[sheet]]s are grouped at the apex of the twig: The [[inflorescence]]s in [[tassel]]s arm, generally thin with many [[bracts]] with few flowers, usually upright and branched at right angles.<ref>http://flora.huh.harvard.edu/china/pdf/pdf07/Dehaasia.pdf</ref><ref>http://www.efloras.org/object_page.aspx?object_id=112365&flora_id=2</ref> Dehaasia species have "[[Perfect flower|perfect bisexual flowers]]" possessing both male and female parts.
The [[sheet]]s are grouped at the apex of the twig. The [[inflorescence]]s are in [[tassel]]s arm, generally thin with many [[bracts]] and few flowers, usually upright and branched at right angles.<ref>http://flora.huh.harvard.edu/china/pdf/pdf07/Dehaasia.pdf</ref><ref>http://www.efloras.org/object_page.aspx?object_id=112365&flora_id=2</ref> Dehaasia species have "[[perfect flower]]s", possessing both male and female parts.


The oblong berries, hard or fleshy are conformed to attract animals and frequently the berries are brightly colored with sometimes besides a thickened strikingly colored stem at the junction of the peduncle part with the fruit.
The oblong fruit, hard or fleshy, are conformed to attract animals and frequently are brightly colored with sometimes a thickened, strikingly colored stem at the junction of the peduncle part with the fruit.
The [[fruit]] is black-dark and shiny, generally scarlet but sometimes yellow or green.<ref>http://131.230.176.4/cgi-bin/dol/dol_terminal.pl?taxon_name=Dehaasia_cairocan&rank=binomial</ref> Usually ovoid, rarely globose with an [[exocarp]] fleshy and meaty. Some species have a red or scarlet dome.<ref>http://www.phytoimages.siu.edu/imgs/pelserpb/r/Lauraceae_Dehaasia_cairocan_24856.html</ref>
The [[fruit]] is black-dark and shiny, generally scarlet, but sometimes yellow or green.<ref>http://131.230.176.4/cgi-bin/dol/dol_terminal.pl?taxon_name=Dehaasia_cairocan&rank=binomial</ref> Usually ovoid, rarely globose with a fleshy and meaty [[exocarp]]. Some species have a red or scarlet dome.<ref>http://www.phytoimages.siu.edu/imgs/pelserpb/r/Lauraceae_Dehaasia_cairocan_24856.html</ref> Seed dispersal of ''Dehaasia'' species is by vertebrates mostly. They are eaten by [[frugivore|frugivorous]] bats and birds ([[columbiformes]]) and several insects such as ants.
Seed dispersal of Dehaasia species is due to vertebrates mostly. They are eaten by [[frugivore|frugivorous]] bats and birds, and others as [[columbiformes]] and they are also consumed by several insects as ants.


==Selected species==
==Selected species==
Line 43: Line 37:
*''[[Dehaasia borneensis]]'' [[Fern.-Vill.]]
*''[[Dehaasia borneensis]]'' [[Fern.-Vill.]]
*''[[Dehaasia brachybotrys]]'' ([[Merr.]]) Kosterm.
*''[[Dehaasia brachybotrys]]'' ([[Merr.]]) Kosterm.
*''[[Dehaasia Blume]], 1837.
*''[[Dehaasia Blume]], 1837
*''[[Dehaasia caesia]] Blume.
*''[[Dehaasia caesia]] Blume.
*''[[Dehaasia cairocan]] (Vidal) C.K. Allen.
*''[[Dehaasia cairocan]] (Vidal) C.K. Allen.

Revision as of 14:53, 26 January 2014

Dehaasia
Trees with the white bark in Taiping (Malaysia)
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Magnoliids
Order:
Laurales
Family:
Lauraceae
Genus:
Dehaasia

Species

see text

Dehaasia is a genus of evergreen or deciduous trees or shrubs belonging to the laurel family, Lauraceae, with 53 species[citation needed] native to continental Asia, from India to China, and islands of Borneo, New Guinea, and Indonesia.

They are hermaphroditic shrubs, or trees of medium size up to 5 m tall.[1] in tropical montane forest, lowland rainforest,[2] subtropical coastal lowland rainforest, cloud forest, and laurel forest. About 38[3] accepted species are found in Cambodia, China, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Thailand, and Vietnam, with the center of diversity in west Malaysia; three species occur in China, two endemic.[4] Alseodaphne, Dehaasia and Nothaphoebe are, morphologically, three closely related but different genera in a subgroup near to Persea genus.

The leaves are bright green to dark green, alternate,[5][6] oblong to lanceolate to almost elliptical, acuminate, and slightly cut at the base. They are leathery in texture, glossy on both sides, dark green on the upper face more intense, sometimes with small blisters on the underside.

The trunk is rough and irregular, covered usually with a paper bark, whitish or gray, smooth and easy to peel , with the xylem yellow. Some species with multiple stems or trunks are strongly branched from the base. The young branches are slender, angular, smoothly integumented, with visible signs of scars and sometimes reddish areas of recent growth. The branchlets are yellow-white at first, but a little gray later, thin, glabrous, warty, lenticellated with distinctive leaf scars, the young more or less angled.

The sheets are grouped at the apex of the twig. The inflorescences are in tassels arm, generally thin with many bracts and few flowers, usually upright and branched at right angles.[7][8] Dehaasia species have "perfect flowers", possessing both male and female parts.

The oblong fruit, hard or fleshy, are conformed to attract animals and frequently are brightly colored with sometimes a thickened, strikingly colored stem at the junction of the peduncle part with the fruit. The fruit is black-dark and shiny, generally scarlet, but sometimes yellow or green.[9] Usually ovoid, rarely globose with a fleshy and meaty exocarp. Some species have a red or scarlet dome.[10] Seed dispersal of Dehaasia species is by vertebrates mostly. They are eaten by frugivorous bats and birds (columbiformes) and several insects such as ants.

Selected species

Some names in the repository Global Names Index of uBio:[11]

References

  1. ^ http://flora.huh.harvard.edu/china/PDF/PDF07/Dehaasia.pdf
  2. ^ http://www.wildsidephotography.ca/gallery/Database/26000_G
  3. ^ http://www.theplantlist.org/browse/A/Lauraceae/Dehaasia/
  4. ^ http://flora.huh.harvard.edu/china/PDF/PDF07/Dehaasia.pdf
  5. ^ http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=109471
  6. ^ http://www.efloras.org/object_page.aspx?object_id=112365&flora_id=2
  7. ^ http://flora.huh.harvard.edu/china/pdf/pdf07/Dehaasia.pdf
  8. ^ http://www.efloras.org/object_page.aspx?object_id=112365&flora_id=2
  9. ^ http://131.230.176.4/cgi-bin/dol/dol_terminal.pl?taxon_name=Dehaasia_cairocan&rank=binomial
  10. ^ http://www.phytoimages.siu.edu/imgs/pelserpb/r/Lauraceae_Dehaasia_cairocan_24856.html
  11. ^ "Global Names Index". Gni.globalnames.org. Retrieved 2011-11-11.

External links

Wikispecies has information related to Lauraceae.
Wikimedia Commons has media related to Lauraceae.
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