Structural Characteristics 



117 



rhizomes (sometimes called " joints", " branches", or 

 "fingers")- Fig. IX, 3, 4, 7, 8, 9, 10 and n, page 

 115, and Figs. X and XI show manner of branching 

 and the usual form of growth. 



A branch from a rhizome planted too deep (Fig. 

 XII, A), or as frequently occurs when rhizomes have 

 become matted from the under surface of a shallow- 

 planted rhizome (Fig. XII, B), must make a neck-like 

 growth to get near the surface where it can develop, 

 and its development is thereby delayed. 



FIG. XII 



A, Rhizome planted deep. 



1, Neck-like growth of branch from "A". 



B, Rhizome shallow-planted. 



2, Neck-like growth of branch from under surface of " B ' 



Sometimes, if the soil was exceedingly poor at the 

 time of planting, or the plant has greatly increased 

 and become matted, and a rhizome is starved, it 

 develops no side-buds but grows straight ahead from 

 year to year. But if conditions subsequently become 



