1	"Flower predominantly green, labellum with dark purple or black markings"	"Coelogyne pandurata"
1	"Flower colour not as above"	2
2	"Flower predominantly white, labellum often with yellow or orange markings"	3
2	"Flower colour not as above"	5
3	"Petals up to half as wide as sepals"	"Coelogyne flaccida"
3	"Petals more than half as wide as sepals"	4
4	"Sepals and petals with wavy margins; labellum midlobe almost round"	"Coelogyne cristata"
4	"Sepals and petals with more or less flat margins; labellum midlobe ovate"	"Coelogyne mooreana"
5	"Flowers 1−3 per inflorescence"	6
5	"Flowers more than 3 per inflorescence, often numerous"	7
6	"Leaf solitary, 10−30 cm long"	"Coelogyne speciosa"
6	"Leaves 2, to 10 cm long"	"Coelogyne fimbriata"
7	"Pseudobulbs ovoid, to 6 cm long; flowers mostly pale orange to salmon-pink"	"Coelogyne tomentosa"
7	"Pseudobulbs conical, 10−25 cm long; flowers mostly cream to pale brown"	"Coelogyne dayana"