66 



THE NURSERY-MANUAL 



as well as here. The prac- 

 tice of pineapple propaga- 

 tion is explained in Part II. 

 A crown is a detachable 

 portion of a rootstock, bear- 

 ing roots and a prominent 

 bud. Rhizomes or root- 

 stocks multiply individuals 

 and extend the distribution 

 of the species by means of 

 a progressive movement of 



FIG. 54. A slip fully developed and 

 broken from the plant. 



the crowns. The rootstock 

 grows in spring and summer, 

 and at the end of the season 

 each branch "develops a strong 

 terminal bud, which usually 

 produces a flowering stem the 

 following season. The root- 

 stock gradually dies away at 

 its old extremity or base, 

 and in a few years a single 

 individual gives rise to a 

 considerable "patch." This 

 is well shown in the common 

 May-apple or podophyllum. 



In some species these 

 crowns are removed in the 

 autumn, and are planted and _ 



. 11 FIG. 55. 



handled in much the same 



A pineapple slip stripped and 

 ready for setting. 



