1	"Petals united to the middle or higher"	2
1	"Petals free to base or almost so"	5
2	"Petals 5"	3
2	"Petals 6"	4
3	"Corolla tube deeply split on one side with lobes and stamens reflexed to, other side, not inflated in middle; inflorescence a 2-flowered umbel, the flowers of equal age"	Benthamina
3	"Corolla tube curved, unequally split but lobes and stamens not reflexed to one side, inflated in middle; inflorescence a simple raceme, sometimes reduced to 2 flowers (1 older than the other) or a single flower"	Dendrophthoe
4	"Corolla tube straight, nearly regular; inflorescence usually a raceme of triads or a simple raceme; epicortical runners present"	Amylotheca
4	"Corolla tube curved, more deeply split on one side; inflorescence a 2-flowered umbel or a solitary flower; epicortical runners present"	Lysiana
5	"Anthers basifixed, immobile, introrse"	6
5	"Anthers dorsifixed, versatile"	9
6	"Petals united for 0.5-3 mm from base, the corolla shed as a single unit; inflorescence a raceme of triads"	Decaisnina
6	"Petals free to base, shed separately"	7
7	"Inflorescence capitate, subtended by 2 enlarged foliaceous bracts connate at margins, covering buds during development"	Diplatia
7	"Inflorescence not subtended by enlarged foliaceous bracts"	8
8	"Inflorescence a raceme of whorls of triads"	Dactyliophora
8	"Inflorescence basically an umbel of dyads, triads or tetrads, sometimes reduced to a simple umbel or a head"	Amyema
9	"Petals 6, not curved; stamens almost equal"	Cecarria
9	"Petals 5, curved; stamens unequal"	Muellerina