546 



LECTURE XX. 



FIG. 61 (after Darwin). Surface-view of leaf of Drosera rotundifolia with mar- 

 ginal tentacles of one side inflected. 



FIG. 62 (after Darwin). Leaf of Dionaa musdpula open. 



FIG. 63 (after Kurtz). Portion of a transverse section of the leaf-blade of Dionaa 

 musdpula^ with a sensitive hair on the inner surface of one lateral half of the 

 blade. 



