shrubs or trees. Leaves opposite, often decussate or whorled, secondary veins
typically joined in a series of intramarginal arches. Inflorescence axillary or
terminal racemes, cymes or panicles. Flowers bisexual, floral tube perigynous,
hemi-epigynous or epigynous, persistent in fruits, often 6 to 12-ribbed. Sepals
4-6, united below into tube. Petals 4-6, or rarely absent, inserted at the rim
of floral tube. Stamens usually as many as or twice the calyx lobes. Ovary
superior, half-inferior or inferior, 2 to 6-locular, ovules many in each
locule. Fruit a capsule, dehiscent. Seeds usually numerous.