''Dipterocarpus acutangulus'' is a species of tree in the family

Dipterocarpaceae Dipterocarpaceae is a family (biology), family of flowering plants with 22 genera and about 695 known species of mainly lowland tropical forest trees. Their distribution is pantropical, from northern South America to Africa, the Seychelles, India ...

. The species name ''acutangulus'' is derived from

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

(''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 () is the List of islands by area, third-largest island in the world, with an area of , and population of 23,053,723 (2020 national censuses). Situated at the geographic centre of Maritime Southeast Asia, it is one of the Greater Sunda ...

, 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 flowering plants with 22 genera and about 695 known species of mainly lowland tropical forest trees. Their distribution is pantropical, from northern South America to Africa, the Seychelles, India, Indochina, Indo ...

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

References

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