28 



The Plant World. 



Fig. 1. Cluster of normal nuts of Juglans calif omica; b, c, abnormal nuts of same; 

 b was attached as c was. More frequently nuts are developed at the base of the catkin. 



Fig. 2. Normaljpistillate catkin with a developing nut; b, abnormal catkin with pistillate 

 flowers; c, shows a symmetrical form; and d, the depression in surface of ovarj-. 



