38 



Plants and their Ways in South Africa 



The leaves unfolded along the branch above about the same 

 time that the catkins were hanging their pink-and-green tassels 

 of flowers at c, c. The branch a-b rested in its growth until the 

 acorns had "set" just below. After they were well formed, 



Fig. 41. — Twig showing leaf scars and buds of poplar. 



the resting bud unfolded, and the summer's growth commenced 

 at b. If the oak has two periods of growth during the season, 

 in estimating the age of a branch a year's growth will include 

 the distance between three bud-scars. Notice the terminal 



