''Dipterocarpus acutangulus'' is a species of tree in the family Dipterocarpaceae. The species name ''acutangulus'' is derived from

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

(''angulus'' = angle, ''acutus'' = sharp) and refers to the ribs of the fruit calyx tube. It is native to peninsular Thailand and Malaysia and also

Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and ea ...

, where it is locally known as keruing merkah or keruing beludu. It is an emergent tree up to 60 m tall. The tree occurs in mixed

dipterocarp forest Dipterocarpaceae is a family of 16 genera and about 695 known species of mainly tropical lowland rainforest trees. The family name, from the type genus ''Dipterocarpus'', is derived from Greek (''di'' = two, ''pteron'' = wing and ''karpos'' = fr ...

s found on sandy and sandy clay soils on coastal hills and inland ridges, up to 1000 m altitude. It occurs in at least one protected area (Kabili- Sepilok Forest Reserve).

References

acutangulus Trees of Peninsular Malaysia Trees of Borneo Trees of Thailand {{Dipterocarpaceae-stub