Leaf:
Elliptic, oblong to obovate, leathery, opposite. Margin irregularly and shallowly undulate-serrate at the upper part, or subentire. Adaxially dark green and glossy, abaxially sometimes sparsely with dark-red small glands, often with tufted brown hairs aggregating at axils of veins. Lateral veins and midveins conspicuously raised abaxially.