HISTOLOGY 



29 



of bundles. Outside these bundles runs round the stem a narrow 

 sclerenchymatous band with a few bundles in it of which some 



Fig. 40.— Transverse section of a portion of the stem of Panicum Crus-galli. x 70 

 I. Epidermis; 2. sclerenchyma ; 3. vascular bundle. 



touch it inside and others outside. Two bundles are found by 

 themselves in the tissue of stellate cells. In Panicum Crus-galli 

 three or four bundles are met with amidst the stellate cells. 



Fig. 41. — Transverse section of the stem of Panicum stagninum. x 10 



The cortex outside the band of sclerenchyma is full of air- 

 cavities, small and large. In Panicum colonum the outline of the 



