186 Principles of Plant Culture. 



the ground, where it takes root, usually at the nodes 

 (116). The currant, juneberry, cranberry and many 

 herbaceous plants are readily multiplied in this way. 

 Stolons often root without assistance, but the rooting is 

 much hastened and encouraged by covering the branch 

 with soil. When well rooted, the young plants may be 

 separated from the parent by cutting the stolons. 



Woody plants grown from stolons are seldom uniform 

 in size and are not often as well rooted as those grown 

 from cuttings (358). Some herbaceous plants are, how- 

 ever, more readily propagated by stolons than by any 

 other means. 



The offset by which the houseleek * is so readily prop- 

 agated, is a very short stolon that forms a single tuft of 

 leaves at its apex. The cane of the black -cap raspberry, f 

 which roots from the tip (Fig. 82), and the runner of the 

 strawberry (Fig. 83), that forms a plant at each alternate 

 node, are modified stolons. 



349. Propagation by Layers or Layering. The layer is 

 an artificial stolon, i. e. , a branch that does not naturally 



grow downward, 

 which is covered with 

 o r surrounded b y 

 moist soil to stimulate 

 the production o f 

 roots (89). The 

 branch may be bent 



FIG. as. Runner of the strawberry. down and covered, as 



is usually practiced with the grape, wisteria etc., or the 

 soil may be ridged up about the branch, as is done with 



* Sempervivum . t JRubus occidentalis. 



