Pi.at.: XXXIV 



Blue Salvia {Salvia patens)-. Flour,- in 6rs1 or pollen-shedding stage Mo left), the con- 

 nectives made to descend by means of a straw inserted into the corolla tube. Flower 

 in later stage (to right i with lengthened style 



Flower of Violet, showing "honey guides 

 on lower petals (magnified) 



Flower of White Dead-Xettle, from side, 

 showing lip and hood (magnified) 



Flower of Indian Nasturtium (Tropceolum) : side view (to left) showing spur, and 



front view (to right) 



