26 



GRASSES OF IOWA. 



Fig. 19 a Section of leaf of Festuca elatior var. pratensis Hackel' Car, mid-nerve; 

 CBP, chlorophyll-bearlnf; parenchyma; B, bulUform cells; M, mestome bun<ile;L, 

 leptome; jF/, hadrome;. Ste, stereome; JSC, epidermal cells. (Pammel and King.) 



c. Cross section. From leaf of 

 Pleuropogon calif ornicum. MS, mes- 

 tome sheath; CBP, chlorophyll bear- 

 ing parenchyma. ( From Holm.) 



b. Section of leaf of Pleuropogon 

 californicum Nees. S(, stereome. 

 (From Holm.) 



Fig. 30. Section of leaf of Fe«tuca elatior vnr. pratensis Hackel. L, \eptome; 11, hadrome; Stc, stere- 

 ome. (Pammel and King ) 



