1	"Mature plant with simple phyllodes"	Acacia
1	"Leaves bipinnate"	2
2	"Stipules prominent and spiny; stamens 10"	Prosopis
2	"Stipules small and deciduous; stamens more than 10"	3
3	"Flowers in globose heads (the heads may be arranged in a spike); stamens free"	Acacia
3	"Flowers in cylindrical spike-like racemes; stamens united into a tube at base"	"Paraserianthes {Paraserianthes lophantha}"