72 



The soil and the plant 



narrow leaves and the grasses are rolled up and fine, 

 whilst those on the damp soil, including the grasses, 

 have usually broad leaves. Thus in the dry sandy soil 

 you may find broom, spurrey, sheep's fescue, pine trees, 

 all with narrow leaves; whilst on the moister soil you 



Fig. 34 a. 



Plants collected on dry sandy soil. Broom, sheep's fescue, crested 



dogstail and gorse, all with narrow leaves 



may find burdock, primroses, cocksfoot and other broad- 

 leaved plants. Figs. 34 a and h show some plants we 

 found on a dry, gravelly patch on Harpenden common, 

 and on a moist loam in the river valley below. 



