1 | Androecium consisting of a ring of free or slightly fused stamens in up to 12 whorls; native to Malesia (subfamily Barringtonioideae) |
1' | Androecium consisting of a hood of sterile or anther bearing stamens; introduced from the Neotropics (subfamily Lecythidoideae) |
2 | Inflorescence racemose, often pendulous |
2' | Inflorescence paniculate, usually erect |
3 | Ovules at or near apex of carpel, anatropous or apotropous |
3' | Ovules inserted on whole length or mid part or base of carpel, campylotropous |
4 | Embryo undivided, without cotyledons |
4' | Embryo circinnate, with foliaceous, plicate cotyledons |
5 | Fruits not winged; pedicel not articulate |
5' | Fruit distinctly 4-winged; pedicel articulate |
6 | Staminal hood with sterile appendages. Calyx with two lobes. Fruit with hard woody endocarp and free seeds |
6' | Staminal hood with anther bearing appendages. Calyx with six lobes. Fruit with fragile exocarp and seeds embedded in pulp |