THE PROPAGATION OF PLANTS 



193 



up the plant, preferably while dormant, and cutting the 

 crown into two or more parts, according to its size or the 

 number of plants desired, and planting the divisions as 

 separate plants. This method is applicable to propaga- 

 tion for private use, rather than for sale purposes. 



Propagation by approach grafting, although in order 

 here, is more readily treated with the 

 other methods of grafting (399). 



350. Propagation by detached parts. — 

 This comprises two different modes of prop- 



FiG. 89. 



Fig. 90. 



Fig. 91. 



Fig. 92. 



Fig. 89. — Bulb of the common onion, Allium Cepa, divided lengthwise. 



B, buds. 

 Fig. 90. — Bulb of garlic, Allium sativum. It contains several smaller 



bulbs (cloves). 

 Fig. 91. — Bulb of wild lily. 

 Fig. 92. — The same divided lengthwise, showing buds, B. 



agation, viz., by specialized buds and by sections of the plant. 

 351. Propagation by specialized buds. — This includes 

 propagation by bulbs, bulblets, corms and tubers. It is 

 in a sense intermediate between propagation by parts 

 intact (346) and by cuttings (358). The bud that is to 

 form the future plant, though not having roots of its own, 

 had been specially prepared by the parent, through an 

 abundant food supply and a partially dormant condition 

 of the protoplasm, to maintain a separate existence, even 



