VENEER GRAFTING OF HERBACEOUS PLANTS 323 



The extensive technique of various kinds of grafting may be 

 found in practical books on horticulture. 1 



420. Veneer Grafting of Herbaceous Plants. Secure healthy 

 specimens of Lycopersicum about 2 5 cm. in height, or larger, So- 

 latium tuberosum of the same size and a number of geraniums. 



Make the following grafts : cut a tangental slice from the 

 surface of a part of the stem of the tomato firm enough not to 

 be easily crushed, in such manner that the ring of woody tissue 

 is cut into. Now select a geranium stem of the same size and 

 cut off a section of the stem a few cm. long from which the 

 leaves have been removed with 

 the possible exception of one or 

 part of one. Make a tangental 

 slice on one side of this cutting 

 deep enough so that the wood of 

 the scion and stock, as well as 

 the cambium of both, will be in 

 contact when the scion is applied 

 to the stock. Tie the scion in 

 position with the tissues firmly 

 pressed together by means of 



soft Cords, or raffia fiber. It may 



FjG 



Transverse section of union 



also be of advantage to bandage of a scion of potato, p, to a stock of 

 with wet moss or cover the union tomato > T. i, i, line of contact of the 



r r ir tissues of the two plants, cm, cambium. 



with a layer of soft wax made of After Wri ht 



beeswax, resin and lard to prevent 



desiccation. Cut away the stock above graft and set the prepara- 



tion in a cool house for about ten days, then bring into a temper- 



ate house. Care must be taken not to disturb the scion during 



the process of union, and to remove all leaves and branches of 



he stock below the graft. 



Repeat the process, putting scions of tomato on potato and 

 scions of potato on tomato. The greenhouse stock will offer many 

 other examples of suitable material for such experimentation. 



i Bailey, L. H. The Nursery Book. 1896. 



