LEAF DISEASE OF PARA RUBBER 
3 
the wild Hevea guyanensis in the jungles. He found the conidial 
stage to be a Fusicladium, which he figured and named F. macro- 
sporum. He also figured and described the associated pycnidial 
fructification, but was unable to find perithecia. Various attempts 
to grow the fungus in artificial culture failed. The disease appeared 
very irregularly, and although it was rather severe on the weaker 
individuals he considered the damage slight. Nevertheless, in one 
case trees 6 years old were found to have succumbed from the fre- 
quent defoliation. 
