Il8 SWARZ ON THE GENERA OF ORCHIDEjE, 



From the before-mentioned it Is evident, that 

 the sexual parts widely differ in the several genera 

 of Orchidese ; yet in those species, which appear 

 nearest related, the resemblance is very close. 

 Hence I have been induced to look for 'the princi- 

 pal characters (as Haller did alsoj, among those 

 organs that have as yet been least attended to, Of all 

 parts of the flower of Orchide.^, both inner and 

 outer, I consider the anther as the most to be de- 

 pended upon. From its situation and insertion^ there- 

 fore, I have taken the primary distinctions ; the reft 

 have been furnished by the outer parts of the 

 flower, as appears in the annexed table. 



But, befides the characters derived from the 

 insertion of the aether, there is another principal 

 one, which must not be overlooked, viz. the qua-, 

 ljties of the pollen-masses. In the Orchidese of 

 the first division, which have the anther intimately 

 connected with the style, these pollen-masses are 

 furnished with a long thread-like pedicle, and are 

 compofed of small vesicular grains, which adhere 

 closely. In those which have the anther fixed to 

 the back of the style, the pollen-imasses are with- 



