No. 436.] LOCALIZED STAGES IN PLANTS. 



2 55 



leaflets, the lower two of which have assumed the same abortive 

 form as described. Leaf number 4 has simply the terminal leaf- 

 let and that greatly reduced in number of dentations. Number 

 5 has but three dentations characteristic of the terminal leaflet of 

 the first nepionic leaf but the lateral proximal border expanded 

 in a manner suggestive of the proximal modification of preceding- 

 leaves. 



These stages are exactly comparable to the stages of the 

 seedling and early spring growth in number of leaflets. In this 

 reduction as noted before in other plants, stages are developed 

 as in numbers 4 and 5 which are simpler than any shown in the 

 direct development of the seedling or in the localized develop- 

 ment shown in early spring growth. This is again a case of 

 repeating stages in the reverse order from that of the seedling 

 and early spring growth. 



This plant which is grown quite 

 shows excellent localized 

 stages in its spring growth 

 on all parts of the plant as 



the flo 



The flowering season is early 

 and the very earliest leaves 

 are persistent enough so that 

 they are still on the plant and 

 can be compared with stages 

 beneath the flower. In some 



the ! 



vth 



>mplex and back tr 

 ie simple again to the J 

 In early spring grow 

 mplest leaf usually fo 



E Fig. 43, a leaf with 



