BULLIFORM CELLS. 



Fig. 33.— Part of a section of the leaf of Mu7irna squarrosa^ showing three groups of 

 large bullif orm cells, extending far into tlie blade. 1 x 50.— (Sud worth.* 



Fig. 34.— Part of a section, including mid-rib, of a leaf of Cathestechum erectum, 

 showing two groups of bullit'orm cells extending two-thirds of the way across the 

 leaf. 1x280.— (Sud worth.) 



Fig. 35.— Section of part of a leaf of Epicampcs ligulata, showing five groups of bul- 

 liform. cells. 1 x 50.— (Sudworth.) 



