64 



THE NURSERY- MANUAL 



and represents but a single node ; in other cases it may com- 

 prise two or several internodes or joints and be much elon- 

 gated. It bears 

 only a single leaf, 

 as in Fig. 51, or 

 several leaves or 

 even branches. 

 The rhizomes are 

 divided in some 

 orchids so as to 

 leave a pseudo- 

 bulb to 

 piece ; or 

 pseudobulb 

 be treated as 

 cutting 



n 



each 

 the 

 may 

 a 



some 

 species. 



An offset is a 

 crown or rosette 

 of leaves, usually 

 borne next the 

 surface of the 

 ground, and which 

 in time may de- 

 tach itself and 

 form an independ- 

 ent plant. The 

 best examples are 

 the house-leeks, 

 plants more fa- 

 miliarly known as 

 "hen-and-chick- 

 ens" and "man-and-wife." These offsets take root readily, 

 and in propagating there is no other care necessary than to 



FIG. 52. Pineapple with slips (three showing) at TT, 

 and two crowns or crown-slips at A A. 



