Dialyceras coriaceum is a tree in the family Sphaerosepalaceae. It is endemic to Madagascar.
Dialyceras coriaceum is known only from populations in the northeastern regions of Sava, Analanjirofo and Atsinanana. Its habitat is humid evergreen forests from sea-level to 500m (1,600feet) altitude. Some populations are within protected areas.
Dialyceras coriaceum is threatened by cyclones and shifting patterns of agriculture. Because lemurs disperse the tree's seeds, threats to the lemur would in turn affect the tree's reproduction.