{{Short description|Genus of flowering plants}} {{automatic taxobox |image =002 Taiping Lake Garden Trees.jpg |image_caption = Trees with the white bark in Taiping (Malaysia) |taxon = Dehaasia |authority = Blume |subdivision_ranks = Species |subdivision = see text |synonyms = *''Cyanodaphne'' {{small|Blume}} *''Haasia'' {{small|Blume}} |synonyms_ref = <ref name = powo>{{cite web |title=''Dehaasia'' Blume |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:21391-1 |website=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |access-date=20 May 2026}}</ref> }}

'''''Dehaasia''''' is a genus of evergreen or deciduous trees or shrubs belonging to the laurel family, Lauraceae, with 53 species{{citation needed|date=November 2012}} 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.<ref name=FOC/> in tropical montane forest, lowland rainforest,<ref>{{Cite web |title=www.wildsidephotography.ca |url=http://www.wildsidephotography.ca/gallery/Database/26000_G}}</ref> subtropical coastal lowland rainforest, cloud forest, and laurel forest. About 38<ref>{{Cite web|url=http://www.theplantlist.org/browse/A/Lauraceae/Dehaasia/|title = Dehaasia — the Plant List}}</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=FOC/> ''Alseodaphne, Dehaasia'' and ''Nothaphoebe'' are, morphologically, three closely related but different genera in a subgroup near to genus ''Persea''.

The leaves are bright green to dark green, alternate,<ref name=FOC>[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=109471 ''Dehaasia'' in Flora of China 7: 224–225. 2008]</ref><ref>{{Cite web|url=http://www.efloras.org/object_page.aspx?object_id=112365&flora_id=2|title = Illustration: Dehaasia hainanensis}}</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 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 leaves are grouped at the tip of the twigs.<ref name=FOC/> The inflorescences form in the axils, are generally thin with many bracts and few flowers, usually upright and branched at right angles.<ref name=FOC/> ''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.<ref>[https://archive.today/20120701105401/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>{{Cite web|url=http://www.phytoimages.siu.edu/imgs/pelserpb/r/Lauraceae_Dehaasia_cairocan_24856.html|title = Dehaasia cairocan (Lauraceae) image 24856 at PhytoImages.siu.edu}}</ref> Seed dispersal of ''Dehaasia'' species is by vertebrates mostly. They are eaten by frugivorous bats and birds (columbiformes) and several insects such as ants.

==Species== 43 species are accepted.<ref name = powo/> *''Dehaasia acuminata'' {{small|Koord. & Valeton}} *''Dehaasia annamensis'' {{small|Kosterm.}} *''Dehaasia arunachalensis'' {{small|M.Gangop.}} *''Dehaasia assamica'' {{small|Kosterm.}} *''Dehaasia bandaharensis'' {{small|Fijrid.}} *''Dehaasia brachybotrys'' {{small|(Merr.) Kosterm.}} *''Dehaasia caesia'' {{small|Blume}} *''Dehaasia cairocan'' {{small|(S.Vidal) C.K.Allen}} *''Dehaasia candolleana'' {{small|(Meisn.) Kosterm.}} *''Dehaasia celebica'' {{small|Kosterm.}} *''Dehaasia corynantha'' {{small|Kosterm.}} *''Dehaasia cuneata'' {{small|(Blume) Blume}} *''Dehaasia elliptica'' {{small|Ridl.}} *''Dehaasia ferruginea'' {{small|(H.Liu) de Kok}} *''Dehaasia firma'' {{small|Blume}} *''Dehaasia gigantocarpa'' {{small|Kosterm.}} *''Dehaasia hainanensis'' {{small|Kosterm.}} *''Dehaasia hirsuta'' {{small|Kosterm.}} *''Dehaasia incrassata'' {{small|(Jack) Nees}} *''Dehaasia kerrii'' {{small|Kosterm.}} *''Dehaasia kurzii'' {{small|King ex Hook.f.}} *''Dehaasia kwangtungensis'' {{small|Kosterm.}} *''Dehaasia lancifolia'' {{small|Ridl.}} *''Dehaasia longipedicellata'' {{small|(Ridl.) Kosterm.}} *''Dehaasia longipetiolata'' {{small|Kosterm.}} *''Dehaasia membranacea'' {{small|Kosterm.}} *''Dehaasia palembanica'' {{small|Kosterm.}} *''Dehaasia paradoxa'' {{small|Blume}} *''Dehaasia pauciflora'' {{small|Blume}} *''Dehaasia pilosa'' {{small|Fijrid.}} *''Dehaasia poilanei'' {{small|H.Liu}} *''Dehaasia pugerensis'' {{small|Koord. & Valeton}} *''Dehaasia rangamattiensis'' {{small|M.Gangop.}} *''Dehaasia spectabilis'' {{small|Miq.}} *''Dehaasia subcaesia'' {{small|Miq.}} *''Dehaasia suborbicularis'' {{small|Lecomte}} *''Dehaasia sumatrana'' {{small|Kosterm.}} *''Dehaasia sumbaensis'' {{small|Kosterm.}} *''Dehaasia teijsmannii'' {{small|Kosterm.}} *''Dehaasia titanophylla'' {{small|(Airy Shaw) Kosterm.}} *''Dehaasia tomentosa'' {{small|(Blume) Kosterm.}} *''Dehaasia turfosa'' {{small|Kosterm.}} *''Dehaasia velutinosa'' {{small|Kosterm.}}

==References== {{Reflist}}

==External links== {{Wikispecies | Lauraceae}} {{Commons category|Dehaasia}} * [http://lauraceae.myspecies.info/category/lauraceae/lauraceae/dehaasia A synopsis of the genus Dehaasia Bl. (Lauraceae)] * [http://lauraceae.myspecies.info/category/lauraceae/lauraceae/dehaasia Chemical constituents from Dehaasia triandra. 1. Three new alkaloids, isocorydione, norisocorydione, and dehatriphine, from the leaves] * [http://lauraceae.myspecies.info/category/lauraceae/lauraceae/dehaasia Chemical constituents from Dehaasia triandra. II. Five new alkaloids, secoxanthoplanine, dehydroisocorydione, 11, 8′-O-bisisocorydine,(8, 8′-R)-and (8, 8′-S)]

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Category:Lauraceae genera Category:Lauraceae