B. Front view of tlie flower, with all the sepals and petals removed, except 

 ie labelium 



C. One pollinium, or pollen-mass, showing the packets of pollen-grains, 



D. Front view of the discs and caudicles of both pollinia within the rostel- 

 "m, with its hp depressed. . , , - , , j j- j 



E. Section throuf^h one side of the rostelhira with the included disc and 



F.' PacketTof polien-^ains, tied togetJier by elastic threads, here extended. 



The general structure of the flower in tliis species will be found to 

 rell with that of our 0. spectahilis. 

 ■ one of the pollen-masses to be renaoved from the flower 

 f the point of a pencil into Uie orifice of the nectary, on 



