THE 



255 



lowed in this study 



ment 



if indeed any attempt at arrange- 



„,^ , n of one class of data preliminary 



toThe elaboration of all the material needs justification 

 it may be pointed out that these apically dehiscent types 

 represent only two or three of the several types of flowers 

 adapted to Apidae. Hypothetically all these types are 

 well represented in regions which are rich in Apidae, and 

 the relative values obtained for any type or types, as the 



Solanum 



too small 



rather than too large as an indication of the total influence 

 of this factor of the environment, since the several types of 

 adaptation to this factor, for instance the Solanum-Cassia 



.scum tvoe among pollen flowers adapted to 



Verb 



Apidae, will be in direct competition with each other as 

 well as with all other types of adaptation. 



Space has not permitted of the discussion of points of 

 theory, such as the nature of the correlation between the 

 different floral parts, the amount and nature of the 

 influence of the fauna upon the evolution of these floral 

 types, or the significance of these conclusions for current 

 conceptions of floral evolution, nor would such be desir- 



more 



data upon which the conclusions actually drawn are based. 



my 



of these problems and to offer some suggestions as to the 

 interpretation of the evidence already accumulated. 



Summary. 



The three objects of the present investigation seem to be 

 satisfactorily accomplished, and there only remains the 



minor and detailed 



working out of the large number of 



structural, 



ecological 



and geographical problems. 



A 



descriptive bibliographic list of apically dehiscent forms is 

 nearly completed and the available 



material 



togethe 



