PABTIGULAB TYPJiS OF FLOWMBS (OBOSIDS) 225 



by the single lid -like 

 anther. This flower is 

 very unlike the lady's- 

 slipper in general ap- 

 pearance, but the fun- 

 damental characters of 

 the flower clearly show 

 the kinship of the two. 

 258. The orchids 

 are exceedingly various 

 among themselves ; 

 that is, they run 

 into many forms. 

 This means that 

 they are highly spe- 

 cialized, or adap- 

 ted to special or 

 particular conditions. 



258a. Specialization is a 

 term employed to denote 

 modification by means of evo- 

 lution, which adapts a plant 

 (or animal), or any part of 

 it, to particular environments 

 or functions. 



2586. Generalization de- 

 notes the absence of such 

 special adaptations. The word 

 is used in connection with 

 organisms (that is, plants or 

 animals), or their parts, which 



Fio. 217. 

 Spike and flower of rye. 



