Contr. Nat. Herb , Vol. IX. 



Plate IX. 









^'$^: 





v^>v 





Sf»>' 



.,-j^'-v 



Fig. 1 .—Marginal Nectar Glands of Ricinus Leaf. Enlarged 43 Diameters. 



Fig. 2.— Cross Section Through Large Nectar Glands at Base of Ricinus Leaf- 

 blade. Enlarged 30 Diameters. 



