1	"Spines without leaves or flowers or their scars; fruits elongating markedly in early development"	"Balanites aegyptiaca"
1	"Spines bearing leaves and/or flowers or their scars; fruits not elongating markedly in early development"	2
2	"Ovaries glabrous"	3
2	"Ovaries hairy"	4
3	"Spines arising 0.5-1.5 cm above their subtending leaf axil; secondary spines absent; leaflets elliptic to obovate"	"Balanites glabra"
3	"Spines arising (1-)2-5(-10) cm above their subtending leaf axil; secondary spines common; leaflets usually orbicular to broadly obovate"	"Balanites rotundifolia"
4	"Flowers 4-merous; primary spines arising (1-)2-5(-10) cm and secondary spines (2-)4-7 mm above their respective leaf axils; leaflets usually orbicular to broadly obovate"	"Balanites rotundifolia"
4	"Flowers 5-merous; primary spines arising (0.5)6-1.2 cm and secondary spines 1-2 mm above their respective leaf axils; leaflets broadly obovate to spathulate"	"Balanites pedicellaris"