Ch. III. S| FORMS OF FOLIAGE LEAVES 



59 



Fig. 29. — Primeval tropicai forest, in Ceylon. To illustrate the large 

 size of leave.? in the undergrowth. (Reduced from Kerner.i 



principle holds good in our temperate flora, as the student 

 may recall. At the other e.xtreme, very small leaves occur upon 

 plants which are exposed to the greatest drjTiess, brightness, 



