Coleus blumei Benth 



399 



LEAF POSITION 



Fig. 4. One percent indoleacetic acid in lanolin cannot substitute for the 

 axillaries of ready-to-flower plants with respect to compensatory growth 

 (graph shows average leaf lengths after 39 days). 



[The "reverse" experiment — excising all the young leaves and leav- 

 ing on only the old ones (5 + ) — did give more growth of the remain- 

 ing leaves. Leaves 5 and 6 grew somewhat more if the apical bud were 

 removed than if it were on. Again, auxin could not substitute for the 



Fig. 5. Average wet weight in grams of all leaves on plants treated as 

 shown (after 86 days). 



