20 



BULLIFORM CELU3. 



FIG. 26. A section of Festuca, gigantea, similar to the previous figure. 1 

 (Hackei). 



30. 



7. The leaves of Leersia oryzoides (rice cut-grass), have nu- 

 merous bands of bullif orm cells on the upper surface, each side of 

 the middle, and one band each side of the keel on the lower side. 



FIG. 27. Transverse section of a leaf of Leersia oryzoides (rice cut-grass), showing 

 side of the keel. 1 x 330.-(Duval-Jouve) Pf 



lateral bands of bulliform cells on the upper side, and one lateral band below on each. 



a oryzoi 

 , and on 



8. The leaves of Ampliicarpum Purshii and others, have 

 opposite bands of bulliform cells on both surfaces of the leaf, 

 though those above are the most prominent. 



FIG. 28. Transverse section of a leaf of Amphicarpum PursMi, showing opposite 

 bands of bulliform cells on both surfaces. 1 x 25. (Sudworth). 



