LUTHER BURBANK 



world, this being a form produced in England. 

 More recently, however, several good double varie- 

 ties of this class have been introduced. 



The clematis is a plant that improves with 

 acquaintance. Existing varieties furnish vines that 

 are beautiful in foliage, in flower, and in their pic- 

 turesque display of seed-pods. There is a great 

 variation among the forms already under cultiva- 

 tion, but there is still abundant opportunity for 

 improvement with these; and in addition wild 

 species may be found that through hybridization 

 will certainly introduce tendencies to still wider 

 variation. 



What plant could offer greater inducements to 

 the would-be experimenter? 



BIGNONIA, WISTARIA, AND BELL-FLOWER 



Of the numerous other interesting ornamental 

 vines with which I have worked more or less ex- 

 tensively, I must content myself with mention of 

 only two or three. Not that there is lack of inter- 

 est, but to detail my work with them would involve 

 a needless repetition as to methods. The work 

 with the clematis may be taken as typical, and as 

 representing one of my most extensive single series 

 of experiments in connection with the ornamental 

 vines. 



There are two or three other groups of vines, 

 however, that must be given at least passing notice. 



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