40 STEM. 



77. Surface Modifications. Examine and draw the following : 

 (a) Stem of rose, showing prickles. 

 (6) Stem of sunflower, showing hairs. 



78. Climbing Stems. Examine and draw the following : 

 (a) Vine, showing stem-tendrils, with scale leaves. 

 (6) Convolvulus, showing twining stem. 



