26 T. Holm — Studies in the Cyperacew. 



2. 



E/vjc*^ 



Figure 17. — Transverse section of the leaf -blade of JF. scirpoidea; Ep. sup = 

 epidermis of the superior face; if = the niesophyll ; H= the 

 hadrome; L = the leptome ; PS = the parenchyma-sheath; St — 

 the stereome ; 75 x natural size. 



Figure 18. — Stoma from the same leaf; 320 x natural size. 



Figure 19. — Transverse section of the root of F. scirpoidea; letters as in figure 

 16; 320 x natural size. 

 (The black in figures 14 and 17 indicates the chlorophyll-bearing tissue, the 



mesophyll.) 



