Large trees to small trees. Buttresses absent. Spines absent. Stilt roots absent. Bark gray, black; not peeling in strips. Slash yellow, orange. Vertical stripes in the inner bark or wood absent. Odor absent. Exudate present; white; flowing; not blackening on exposure to air. Terminal buds not enclosed by leaves.
Complex hairs absent. Stinging hairs absent. Mature twig indumentum absent.
Leaves opposite; not scale-like; simple; all of the same type; not modified into spines; coriaceous; not gland-dotted; symmetric at the base; not dissected; smooth margined. Epidermis not waxy. Venation pinnate. Secondary veins open; prominent, or not prominent, but visible. Smallest veins not prominent, but visible, or not visible; ladder like. Intramarginal vein absent. Stalk of blade less than a quarter the length of the blade; not winged; attached to base of leaf blade; not swollen. Stipules absent. Domatia present, or absent; pit-like; scattered along midrib. Basal glands absent. Hairs on mature leaf present; sparse.
Inflorescences present; axillary; the flowers from a single point on the stem; specialized inflorescence units absent; numerous and persistent inflorescence bracts absent. Flowers bisexual; stalked; to about 3 cm long or across; round; with male or female parts not raised on a col