PRICKLY ASH. TOOTH-ACHE TREE. 



XantJioxylum Clava-Herculis L.^ 



Fig. 346. Branchlet with mature leaves and clusters of fruit, i ; scattered empty capsules and 

 seeds, 2 ; branchlet bearing prickles in winter, 3. They do not all bear prickles the first season, 



347. Trunk with leaves and small prostrate trunk at base. Red River Valley, Arkansas. 



348. Wood structure magnified 15 diameters. 



