Mediusella arenaria is a tree in the family Sarcolaenaceae. It is endemic to Madagascar.
Description
Mediusella arenaria grows up to tall with a trunk diameter of up to . Its bright green leaves are ovate in shape and measure up to long. The tree's flowers typically occur in inflorescences of two flowers, each with white petals. The roundish fruits measure up to in diameter.
Distribution and habitat
Mediusella arenaria is known only from the northwestern regions of Diana, Betsiboka, Boeny, Melaky and Sofia. Its habitat is dry forests from to altitude. Only a few populations are within protected areas.
Threats
Mediusella arenaria is in decline due to wildfires and the harvesting of its wood. The preliminary status of the species is Near Threatened.