To 



I'LAXT STTOIES 



r"^*' 



Fi(i. bl. Cuttonwoods, in winter condition, on a sand dune, showing the branching 



habit, and the tendency to grow in groups. 



grows townrflrt tlic light, while tluatiug stems miiy he 

 either erect or transverse. 



]'). Stems hi-urUitj settle leaves 



49. General character. — A settle letif is one which does 

 iK.it ser\"e tis J'oli;ige, tis it does not develop the iieeesstiry 

 eliloropliyll. Tliis iitettiis thtit it does not need such an 

 exposure of stirl'tice, tiiid hence sctde leaves are nsinilly nineh 

 smaller, tiiid eerltiinly are more inconsjiicuous tlum foliage 

 leaves. A good illustration of sctde letives is furnished hy 

 the ordinttry scaly huds of trees, in which the covering of 

 overlapping sctdy leaves is very conspicuous (see Fig. Go). 

 As there is no development of chlorophyll in such leaves. 



