Shrubs or trees having simple alternate usually toothed exstipulate leaves and regular hermaphrodite flowers. Calyx free or adherent to the ovary. Corolla of 4 to 8 more or less united petals, often differing in number from the calyx-lobes. Stamens double the number of the corolla-lobes or frequently more. Fruit drupaceous, or dry and winged, included in the calyx-tube or inferior, 1- to 5-celled; cells usually 1-seeded; seeds albuminous. A small group of about six genera and upwards of a hundred species, best known in gardens by the Snowdrop trees. The majority of the species are from the tropics of America and Asia.