The Parasitism of Nectria cinnabarina. J. Line. 25 
From a number of these dishes nothing developed, but in all 
cases where the piece of wood had been taken from the edge 
of the dark zone a vigorous fungal mycelium grew out from the 
chip into the jelly. Portions of this mycelium could be readily 
removed to other media, and in all such cases the mycelium 
proved to be that of Nectria. 
From these observations and experiments it seemed probable 
that the Nectria was able to cause the wilting and death of 
branches on the currant when once established in the bush. 
It is worth recording that in no single case did Botrytis develop 
from the cultures made from the branches, and it was observed 
comparatively rarely in the orchards. Collybia velutipes was 
extremely common in one orchard on older bushes, and was 
then frequently associated with Nectria; it was rarely found on 
younger bushes and did not develop on any of the bushes from 
which wilted branches were removed. About a dozen bushes 
in all were found bearing fructifications of Fomes Ribis; these 
were in every case sickly looking plants stated to be at least 
forty years old. 
B. Infection Experiments in the field. 
The common occurrence of the fungus on so heavily pruned 
a plant as the red currant, as well as its behaviour on other 
plants, would lead one to suppose that its normal method of 
entering the host was through a wound; in view of some recent 
work on the method of infection of the apple canker fungus it 
was decided to test the power of the coral spot fungus to pene- 
trate uninjured branches, through either the leaf-scars, lenticels 
or bud scales. 
It was thought possible that different strains of the fungus 
might be found which would show different powers of infection. 
A series of cultures of the fungus was started with the usual 
precautions as to freedom from other fungi, bacteria, etc. No 
difficulty was experienced after a time in making single spore 
cultures from both conidia and ascospores, and these were ob- 
tained from a number of different sources. Cultures were set up 
on many different media under a variety of conditions in the 
hope that the formation of perithecia might be induced. So far 
none have been obtained, although nodules exactly resembling 
them in appearance and to some extent in structure are obtained 
in old cultures. These cultures are being carried on with other 
media at the present time, in the hope that the success of Miss 
Cayley with Nectria galligena may be repeated. 
This fungus shares with Nectria cinnabarina the character 
that in many gelatinous media the mycelium buds off spores 
laterally in great profusion. 
