Leaves opposite or alternate, petiolate, estipulate, simple, margin entire or rarely undulate, leathery to thickly papery, often pubescent with unicellular 2-armed trichomes, pinnately veined.

• 叶对生和互生，具叶柄，无托叶，单叶，边缘全缘和很少波状，革质或厚纸质，通常具有单细胞的毛，叶脉羽状。