1	"Leaf margins minutely denticulate"	2
1	"Leaf margins entire"	3
2	"Calyx deeply divided in bud, lobes denticulate; flowers red; petioles narrowly winged, green"	"Barringtonia acutangula"
2	"Calyx connate in bud, rupturing into 2-5 lobes with entire margins; flowers white; petioles not winged, usually dark brown"	"Barringtonia racemosa"
3	"Leaf lamina 1.8-2.2 times longer than wide, petioles 0-5 mm long; pedicels 4-8 cm long; fresh fruits 85-110 mm wide, strongly angular"	"Barringtonia asiatica"
3	"Leaf lamina 2.7-3.4 times longer than wide, petioles 5-45 mm long; pedicels absent; fresh fruits 40-65 mm wide, not angular"	"Barringtonia calyptrata"