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indigenous in the countries in which it is now known to occur or to 
what extent it may have been transported from one country 
to another cannot be definitely said. 
The fungus attacks both the stem and the fruits of the plant. 
The disease of the stem is known as “ die-back” owing to the fact 
that when a shoot is affected death commences at the tip and 
gradually extends towards the base. The younger shoots are 
usually first affected; later on the disease spreads to the older 
branches and sometimes even to the trunk. Between the healthy 
and the dead parts of a branch there is an intermediate zone which 
may in some cases extend for distance of two feet and on which the 
black perithecia of the fungus can be seen bursting through the 
bark. After the branches are dead and even after they have fallen 
the fungus continues to grow on them and to produce its perithecia 
in large numbers. 
The disease of the pods is known as “ brown pod”; it makes its 
appearance in the form of a discoloured patch at one or other end 
of the pod or at a wounded surface. The discoloured area increases 
in size and extends over the greater part of the surface of the pod. 
Pods may be attacked in all stages. Young pods when once 
affected with the disease seldom reach maturity ; old pods, however, 
which develop the disease when nearly ripe, may be allowed to ripen 
and the seeds may be used. 
The results of infection-experiments have shown that the fungus 
can only effect an entrance into the stem through a wound. In the 
case of the fruit, however, it is thought that, in addition to entering 
through a wound, the fungus is capable of entering at the stigmatic 
and at the basal end of the pod. 
Diplodia —. to be identical ; Petch regards Botryodiplodia 
* die- 
Diplodia will give rise to an ascigerous stage. 
