Trees or shrubs with large, rather thin leaves. Flowers solitary, usually pro-duced from the internode above the axil, sometimes terminal or rarely pseudo-axillary; pedicels often long, articulate at the base, without bracts. Perianth seg-ments valvate in bud; sepals small; outer petals flat and thin, the inner longer, thick and fleshy with involute margins, cymbiform. Stamens numerous; pollen sacs locellate; connective expanded above the anther into a truncate disk. Fruit of several free, oblong-cylindric monocarps, containing several (4-14) lateral seeds.