FIELD MUSEUM OF NATURAL HISTORY. 



BOTANY VOL. IV. PLATE VIII. 



2 3 



10 



II 12 13 



16 17 18 



24. 



25 26 



3 3 1 



20 



21 



22 23 



28 



27 



2 9 



33 



34 35 



37 38 



FRUITS OF XANTHIUM (Natural size) 



