Struct lira/ Cliaract en sties 



117 



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

 "fingers"). Fig. IX, 3, 4, 7, 8, i), 10 and 11, page 

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

 anci the usual form of growth. 



A branch from a rhizome planted too deep (Fig. 

 Xn, A), or — as frequently occurs when rhizomes have 

 become matted — from the under surface of a shallow- 

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

 growth to get near the surface where it can develop, 

 and its development is thereb)' dehnxd. 



Fic.XH 



A, Rhizome planted deep. 



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



B, Rhizome shallow-planted. 



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



Sometimes, if the soil was exceedingh- poor at the 

 time of planting, or the plant has greath' increased 

 and become matted, and a rhizome is starved, it 

 develops no side-buds but grows straight ahead from 

 vear to vear. But if conditions subsec]uently become 



