''Pleiospermium longisepalum'' (also known as Banguey Island orangeaster) is a species of plant in the family

Rutaceae The Rutaceae () is a family (biology), family, commonly known as the rueRUTACEAE
in Bo ...

. It is

endemic Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also foun ...

to the state of

Sabah Sabah () is a States and federal territories of Malaysia, state of Malaysia located in northern Borneo, in the region of East Malaysia. Sabah has land borders with the Malaysian state of Sarawak to the southwest and Indonesia's North Kalima ...

on the island of Borneo. ''Pleiospermium longisepalum'' is a shrub or small tree, growing up to 15 metres tall. ''Pleiospermium longisepalum'' is common in lowland and foothill forests and lower montane forests of Kota Marudu, Ranau, and Tambunan districts, growing up to 1,300 metres elevation. It is also found on some offshore islands like

Banggi Banggi Island () is located in the Kudat Division of Sabah in Malaysia. With an area of 440.7 square kilometres, it is the largest island fully in Malaysia followed by Bruit Island, Langkawi Island and Penang Island. It is located off the no ...

and Bohayan. It is typically found on hill slopes and near streams in primary and secondary rain forests. It colonizes quickly into disturbed areas.

References

longisepalum Endemic flora of Malaysia Flora of Sabah Flora of the Borneo lowland rain forests Flora of the Borneo montane rain forests Vulnerable plants Plants described in 1939 Taxonomy articles created by Polbot {{Asia-stub