1	"Inflorescence an open panicle with well developed scape"	"Murdannia {Murdannia graminea}"
1	"Inflorescence lacking a scape; flowers enclosed in sheathing leaves or bracts"	2
2	"Fertile stamens 6; staminodes absent"	Tradescantia
2	"Fertile stamens 3; staminodes 3"	"Commelina {Commelina ensifolia}"