SEPARA TION. 3 ! 



A crown is a detachable portion of a root-stock bearing roots 

 and a prominent bud. Rhizomes or root-stocks multiply indi- 

 viduals and extend the distribution of the species by means of a 

 progressive movement of the crowns. The root-stock grows 

 during summer, and at the end of the season each branch 

 develops a strong terminal bud which usually produces a flower- 

 ing stem the following season. The root-stock gradually dies 

 away at its old extremity, and in a few years a single individual 

 gives rise to a considerable patch. This is well shown by the 

 common May-apple or podophyllum. 



In some species these crowns are removed in the autumn and 

 are planted and handled in much the same manner as bulbs. 

 The crown or pip of the lily of the valley, shown half size in 

 Fig. 17, is obtained in this manner 



Fig. 17. Lily of the Valley Crown. 



