Dipterocarpus tempehes is a locally common Dipterocarp widespread in Sabah, Sarawak and Kalimantan.
D. tempehes is unusual because it is the only dipterocarp with a fruit without any wings just a bare nut. The tiny remnants of the normal dipterocarps seed wings form a tiny crown around the apex of the nut as shown in the bottom photo.
Previously believed to be endemic to Borneo, a relict population was discovered in Singapore in (2005) . See the link below ;