DISEASE OF THE LEAVES OF CALANTHES. 



127 



abnormal condition of the pseudo-bulb produced in the previous year. 

 The fact that the most inbred hybrids are the worst sufferers seems to 

 indicate that hybridisation has produced Calanthes more delicate than the 

 species from which they were bred. The best prospect of bringing these 

 hybrid plants into a more healthy condition appears to lie in more 

 rational methods of cultivation for a few years. 



