EXPLANATION OF THE PLATE- 



Plate XXIX. Xanthoxtlum Clava-Herculis. 



1. A staminate inflorescence, natural size, 



2. A pistillate inflorescence, natural size. 



3. A staminate flower, enlarged. 



4. Vertical section of a staminate flowerj enlarged. 



5. A pistillate flower, enlarged. 



6. Vertical section of a pistillate flower^ enlarged. 

 ?• A fruiting branch, natural size. 



8. Vertical section of a fmit, enlarged. 



9, Cross section of a fruit, enlarged. 

 10- An embryo", much enlarged. 



11. Diagram of a staminate flower. 



12. Diagram of a pistillate flower- 



13. Portion of a young branch with prickles. 



