2G CATKIN [CH. 



Catkins, or catkin-like spicate inflorescences are found 

 in the following : 



Bog Myrtle Hornbeam ^ Birch </ 



Poplars 

 Alder ^ 

 Oaks ^. 



Beech ^ 

 Willows 



Hazel ^ 

 Walnut ^ 



Fig. 8. 1, a staminate or male catkin, and 2, a pistillate or female 



catkin of a Willow. 



As we shall see later, there are considerable differences 



