1	"Stamens 5, rarely 3, free; anthers 4-celled, dehiscing by terminal pores; flowers in short head-like racemes"	Poranthera
1	"Stamens 3, free or filaments connate or stamens totally united into an androphore; anthers 2-celled, dehiscing longitudinally; flowers axillary; solitary or fascicled"	2
2	"Flowers with a hypogynous disc or glands; filaments free or united; anthers free; seeds with a small circular terminal hilum"	Phyllanthus
2	"Flowers lacking hypogynous glands or disc; filaments totally united into an androphore; anthers sessile on androphore; seeds with a large elliptic ventral hilum"	Synostemon