{{Short description|Species of flowering plant}} {{Speciesbox | image = | status = PE | status_system = IUCN3.1 | status_ref = <ref name=IUCN/> | genus = Semecarpus | species = sandakanus | authority = Kochummen<ref name=POWO/> | synonyms = }}
'''''Semecarpus sandakanus''''' is a flowering plant in the family Anacardiaceae. It is native to Borneo.<ref name=TFSS/>
==Description== ''Semecarpus sandakanus'' grows as a tree up to {{cvt|5|m|0}} tall. It has grey, slender twigs. The leathery leaves are elliptic and measure up to {{cvt|30.5|cm|0}} long and to {{cvt|10|cm|1}} wide. The {{plantgloss|inflorescence|inflorescences}}, in {{plantgloss|panicle|panicles}}, measure up to {{cvt|10|cm|0}} long.<ref name=TFSS/>
==Taxonomy== ''Semecarpus sandakanus'' was described by Malaysian botanist Kizhakkedathu Mathai Kochummen in ''Sandakania'' in 1996.<ref name=POWO/> The type specimen was collected in Sandakan District in Sabah, Borneo. The species is named for Sandakan.<ref name=TFSS/>
==Distribution and habitat== ''Semecarpus sandakanus'' is endemic to Borneo, where it is known only from a single collection in Sandakan District. Its habitat is in lowland forest.<ref name=IUCN/><ref name=TFSS/>
==Conservation== ''Semecarpus sandakanus'' has been assessed as critically endangered (possibly extinct) on the IUCN Red List. Its single habitat has been converted to a palm oil plantation and the species has not been encountered since 1977. It is not known to be present in any protected areas.<ref name=IUCN/>
==References== {{Reflist | refs =
<ref name=IUCN>{{cite iucn |author1=Damit, A. |author2=Hoo, P.K. |author3=Khoo, E. |author4=Maryani, A. |author5=Maycock, C.R. |author6=Nilus, R. |author7=Pereira, J.T. |author8=Sugau, J. |author9=Tanggaraju, S. |author10=Tsen, S. |name-list-style=amp |year=2019 |title=''Semecarpus sandakanus'' |article-number=e.T136619670A136620040 |doi=10.2305/IUCN.UK.2019-3.RLTS.T136619670A136620040.en |access-date=2 May 2026}}</ref>
<ref name=POWO>{{cite POWO |title=''Semecarpus sandakanus'' Kochummen |id=991562-1 |access-date=2 May 2026}}</ref>
<ref name=TFSS>{{cite book |last=Kochummen |first=K. M. |date=1996 |contribution=''Semecarpus'' L.f. |editor1-last=Soepadmo |editor1-first=E. |editor-link=Engkik Soepadmo |editor2-last=Wong |editor2-first=K. M. |editor3-last=Saw |editor3-first=L. G. |title=Tree Flora of Sabah and Sarawak |volume=2 |page=84 |publisher=Forest Research Institute Malaysia |isbn=983-9592-56-4}}</ref>
}}
{{Taxonbar|from=Q18080094}}
sandakanus Category:Endemic flora of Borneo Category:Flora of Sabah Category:Plants described in 1996 Category:Critically endangered flora of Asia