Shrubs or trees, unarmed, monoecious [dioecious]; hairs absent [unbranched]; latex colorless [white]. Leaves persistent [deciduous], alternate, simple; stipules present, persistent; petiole present, glands absent; blade unlobed, margins entire [serrate], laminar glands abaxial, submarginal [absent]; venation pinnate. Inflorescences bisexual (pistillate flowers proximal, staminate distal) [unisexual], terminal or axillary, racemelike thyrses; glands subtending each bract 0 [or 2]. Pedicels present. Staminate flowers: sepals 0[–3]; petals 0; nectary absent; stamens (2–)4(–5)[–100], distinct; pistillode absent. Pistillate flowers: sepals 0[–3]; petals 0; nectary absent; pistil 3-carpellate; styles 3, connate basally, unbranched. Fruits capsules. Seeds subglobose; caruncle present [absent].