Scientific Name: Calophyllum blancoi
Bitanghol is an erect tree reaching a height of about 25 meters. The leaves are opposite, somewhat hairy, oblong, about 10 centimeters long, and three centimeters wide, with numerous parallel veins closely set. The panicles are equal to the leaves in length or shorter, hairy, and stand erect or ascend from the upper leaf axils. The flowers are creamy white and nearly two centimeters across. The fruit is ellipsoid.
It is found only in the Philippines in primary forests at low and medium altitudes. It is often abundant in Cagayan to Sorsogon Provinces in Luzon; and in Ambil, Palawan, Masbate, Leyte, Panay, and Mindanao.
Bitanghol is used for masts and spars; bridge, ship, and boatbuilding; beams, joists, rafters, flooring; furniture and cabinetwork; and vehicle shafts.
The sap of the bark, especially when mixed with sulfur, is used locally as a cure for boil and wounds. Cloth kept moist with the sap is applied on the breast of a patient suffering from asthma.