CUAl'. II. 



IIABENAPJA CHLORANTHA. 



()<> 



of the pollinia by insects, including the movement of 

 depression, are as perfect as in the species which 

 depend upon insect aid." Hence there can be little 

 doubt that this species is occasionally cross-fertilised. 



HAnESARIA CHLORAXTIIA, OR BUTTERFLY ORCHIS. 



aa. antlier-CL'lls. 



d. ,iisc ofjoUinium. 



stigma. 



nectary. 



orifice of nectar}-. 



labellum. 

 A. Flower viewed in front, with all 



the sepals and petals removed 



e.\cept the l;ibollum with its 



nectary, which is turned tu one 



side. 



B. A pollinium. (This has hardly 



a sufficiently elongated appear- 

 ance.) The drum-like pedicel 

 is hidden behind the disc. 



C. Diagram, giving a section 



through the viscid disc, the 

 drum-like pedicel, and the 

 attached end of the caudicle. 

 The vi.<cid disc is formed of an 

 ujijjer membrane with a layer 

 of viscid matter beneath. 



Hahenaria or Platanthera chlorantha — The ]iollinia 

 of the Large Butterfly Orcliis differ considerably from 

 those of any species hitherto mentioned. The two 



