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SOUTH INDIAN GRASSES 



stem is ellipsoidal with the front quite fiat, and the cortex is narrow 

 at the sides and very broad in front and at the back. The 

 sclerenchymatous ring is circular in outline. The stem of Panicum 

 Crus-galli is broadly ovoid and the cortex is uniformly broad. The 

 epidermal cells as well as the lower cells are thickened in the stems 

 of Panicum fluitans and Panicum Crus-galli, but in the stems of 

 Panicum colonum and Panicum flavidum the epidermis alone is 

 thickened. In the cortical portion outside the sclerenchymatous 

 band, small vascular bundles occur in the stems of Panicum 

 colonum, Panicum Crus-galli and Panicum fluitans. (See figs. 39, 40, 

 42 and 43.) 



Fig. 42. — Transverse section of the stem of Panicum fluitans. x 15 



FlG. 43. — Transverse section of a portion of the stem of Panicum fluitans. x 60 

 I. Epidermis; 2. sclerenchyma ; 3. vascular bundle ; 4. air-cavity; 5. diaphragmt 



