Botanical Section 



[pt I 



stolons — of a similar nature to those of the Strawberry plant. 

 Such grasses are said to be stoloniferous. 



That rhizomes and stolons are really modified stems is proved 

 by their internal structure, by the fact that they possess nodes 

 upon which roots and leaves are borne, and that the ordinary 

 erect stems are but a continuation of their growth (see Fig. 5). 



In both cases they serve to propagate the plants, and enable 

 them to rapidly cover considerable areas. 



Fig. 4. Cross-section of one of the principal fibro-vascular bundles (V x ) in a 

 Wheat culm, showing secondary bundles ( V 2 ) on either side. Note the thick- 

 walled tissue (sclerenchyma Scl.) surrounding the bundles and linking them 

 up to the epidermis. P, the parenchyma. I, the inner side of the culm. 

 Highly magnified. 



Leaves. The leaves are arranged in two rows — or ranks — 

 upon the stem, and alternate one with another. Each leaf con- 

 sists of two parts— the lower portion surrounding the young 

 shoot or culm — called the sheath ; and the upper portion called 

 the lamina or blade. (Figs. 13 and 23.) 



Leaf -sheaths. The sheaths are attached to the stem at the 

 nodes, and the thickening at these points is often chiefly due to 



