Shrubs, sometimes epiphytic, or small trees, to 12m ; young shoots scaly, often also setose. Leaves evergreen, lower surface whitish- or greyish-papillose, scales distant or dense, sometimes with crenulate margins. Inflorescence 1-7-flowered. Calyx usually conspicuous. Corolla funnel-campanulate ; stamens 8-27 though usually c.10, declinate ; ovary tapering into style or impressed below the declinate style. Seeds winged and finned.