Description from Flora of China
Trees or shrubs evergreen or deciduous, dioecious or monoecious, with resinous, peltate glands in young parts. Leaves simple, often aggregated at apex of shoot, margin entire or serrate; stipules absent. Flowering precocious or coetaneous. Inflorescences spicate, simple or paniculate. Male flowers with 2-8(-20) stamens; filaments free or united at base, with bracteoles or not. Female flowers with 2-4 bracteoles adnate to ovary and enlarged, or free and not enlarged; ovary with resinous glands; style short, with 2 relatively long stigmatic branches. Fruit a drupe, often with headlike, wax-covered papillae; endocarp hard. Seeds erect, with membranous testa.
About 50 species: nearly worldwide except for some warm temperate parts of Old World and Australia; four species (two endemic) in China.