I. Leaves opposite- 



II. Leaves othenvise- 



BLUE 



(First, see whether plant falls in Class lor II; i\ 



is reached, this numbt 



fl. in raceme- 



fl. apparently 

 solitary or few- 



corolla 4-parted (i) 

 othenvise (2) 



[H. axillary (3) 

 Ifl. terminal (4) 



I 



tti 



fl. in cluster- 



fl. axillary (5) 

 otherwise (6) 



FB. in raceme (.7; 



climbing, spreading fl. in cluster y8) 



or trailing [1-3 floweis (9; 



upright - 



Ivs. in water (10) 



otherwise - 



Tvs. from 

 only 



otherwise 



