PRACTICAL WORK 55 



(a) Note the dominant shrub, or tree, in hedges with a stream 

 running by them. Some species of Willow will be often found. 



(b) Note the tall, upright plants, such as Rosebay Willow-herb. 



(c) Note the herbaceous vegetation at the bottom of the hedge ; 

 examine the stems and leaves of these plants as regards their 

 hairiness, their succulence, the thinness of their epidermis, and 

 their reduced fibro- vascular tissue (bast and wood). Compare 

 these plants with those found in a hedge by the side of which 

 there is no water. The observation of hedges is also work that 

 can very easily be done by classes of students. 



BIBLIOGRAPHY. Kerner, Natural History of Plants, vol. ii. ; Schimper, Plant 

 Geography ; Step, Wild Flowers Month by Month ; Scott-Elliott, Nature Studies ; 

 Lord Avebury, British Flowering Plants; Marr and Shipley, Natural History 

 of Cambridgeshire; Darwin, Insectivorous Plants. 



