1	"Plants scrambling shrubs with a pair of stipular thorns at the base of each leaf"	Capparis
1	"Plants trees or, if shrubs, without thorns"	2
2	"Calyx circumscissile, the top falling off as a ""lid""; fruit prominently ribbed"	"Thilachium {Thilachium thomasii}"
2	"Calyx not circumscissile, the lobes persistent"	3
3	"Receptacle more or less tubular"	Maerua
3	"Receptacle not elongated, often shallowly cup-shaped"	4
4	"Fertile stamens borne more or less directly on the receptacle"	Boscia
4	"Fertile stamens borne on a distinct androphore"	Cadaba