Colour: W-Y
  Division: choose the division which most closely matches your specimen
  Cultivar:
 
  D7   D8  
    e.g. Sugarbush     e.g. Elvira (NB technically D8 W-YYO)  
             
  D10   D11  
    e.g. Kenellis     e.g. Freedom Stars (NB technically D11a W-YWW because of the colour-zoned petals)  
  D13        
    e.g. N. cypri