1	"Yellow, brown or reddish, leafless parasitic twiners."	Cuscuta
1	"Green leafy plants, not parasitic on other plants."	2
2	"Ovary distinctly 2-lobed, styles 2, inserted between the lobes."	Dichondra
2	"Ovary entire, style or styles terminal."	3
3	"Sepals united, with lobes shorter than the tube."	Wilsonia
3	"Sepals free."	4
4	"Styles 2, free or united for up to half their length; hairs bifid."	5
4	"Style 1; hairs simple or bifid."	7
5	"Styles united at the base."	Bonamia
5	"Styles free."	6
6	"Styles forked with linear stigmas; flowers axillary."	Evolvulus
6	"Styles entire with capitate stigmas; flowers terminal."	Cressa
7	"Capsule small, indehiscent, 1-seeded; sepals at fruiting enlarged, spreading, scarious and reticulate; hairs bifid."	Porana
7	"Capsule and fruiting sepals not as above; hairs simple."	8
8	"Stigma capitate or biglobose."	Ipomoea
8	"Stigma lobed, lobes linear or oblong."	9
9	"Stigmatic lobes 4 or more."	Polymeria
9	"Stigmatic lobes 2."	10
10	"Bracteoles large, subtending and more or less enclosing the calyx."	Calystegia
10	"Bracteoles small, distant from the calyx"	Convolvulus