Mendel's law of heredity and horticulture. 



51 



is in this respect that Mendehsm comes to the rescue of the modern 

 seed grower. By the adoption of the Mendehan method of breeding 

 from single individuals separately and selecting one only of these to 

 perpetuate the true stock, the necessity for " rogueing " is practicallv 



( 



Fig. 32.— Cattleya Warneri alba. {Garden.) (p. 45) 

 An impure C albino. 



dispensed with, and the true stock is permanently established without 

 further selection, to the great advantage of the seed grower. 



According to the old method a certain stock or strain was built up by 

 the mass selection of several or many individual stock plants, and allow- 

 ing them to breed together, the consequence being that some in- 

 viduals breed true while others do not, and each strain or stock, even 



E 2 



