No. 436.] LOCALIZED STAGES IN PLANTS. 



2 57 



five-lobed character is shown and the 

 a three-lobed character in 

 which each lobe is compar- 

 able to the first leaves of 

 Fig. 46. 



Beneath the flower the 

 plant repeats, in the reverse 

 order, these stages with great 

 definiteness. Beginning with 

 the typical complicated leaf at 

 the base of the flowering 

 branch, stages are repre- 

 sented gradually losing their 

 characters in the reverse «"""»*■»»■•■ 

 order to the development figured, until simple five-lobed leaves 

 are reached, then three-lobed ones and finally beneath the floWer 

 are simple leaves which are even simpler than the first leaves of 

 the seedling. The reduction is complete and exactly retraces 

 the stages of the seedling and early spring growth as localized 



Artemisia abrotamum (Tourn.) Neck. Figs. 48. 49. 



