Pellacalyx cristatus is a tree in the family "Rhizophoraceae". The specific epithet "cristatus" means 'crested', referring to the .
Description.
"Pellacalyx cristatus" grows up to tall, with a stem diameter of . The smooth bark is brown to yellow. The leaves are ovate to oblong and measure up to long.
Distribution and habitat.
"Pellacalyx cristatus" is endemic to Borneo. Its habitat is in hilly areas, to elevations of .