1	"Trees of rainforests, monsoon forests or margins of freshwater streams and swamps; seeds not viviparous; petals distinctly clawed (Carallia brachiata)"	Carallia
1	"Trees or shrubs of coastlines, estuaries or tidal swamps; seeds viviparous; petals not clawed"	2
2	"Stilt roots present, often branching and extending several metres from trunk; sepals 4; petals 4"	Rhizophora
2	"Stilt roots clustered around base of trunk, or absent; sepals 5, 6 or 8–16; petals 5,6 or 8–16"	3
3	"Leaf-blades dark green above, black-dotted below; sepals 8–16; petals 8–16; bracteoles absent; ovary completely inferior"	Bruguiera
3	"Leaf-blades bright green or yellow-green above, not black-dotted below; sepals 5 (or 6); petals 5 (or 6); bracteoles paired, united; ovary half-inferior"	Ceriops