181 
Seedlings with “ spears” only a millimetre or two high can be 
infected by applying spores to the “ dew-drops” issuing from 
the water-stomata at the apex of the first leaf. 
H. MARSHALL WARD. 
CAMBRIDGE, 
LLP 27, lOO Ty 
OZONIUM AURICOMUM LINK. 
By Charles B. Plowright, MD. 
This curious mycelial condition is familiar to all of us. Often 
to be found on chips in wood yards or between the bark and 
the wood of dead trunks, one seldom has the chance of seeing 
to what fungus it really belongs. Just as the familar 
Rhizomorpha was for long recognised as a mycelial condition 
before its connection with A garzcus melleus was demonstrated, 
so there is a considerable amount of uncertainty about the true 
relationship of Ozonzwm. It is by no means impossible that all 
the Ozonium-like bodies one meets with are not connected with 
the same fungus. As is the case with Rhzzomorpha the hyphe 
of Ozoniumare rather a condition of some fungal mycelium than 
the true vegetative mycelium, a condition in which the hyphe 
are compacted into a sort of half felt half sclerotium. It is only 
under very favourable circumstances that one can observe the 
sporophore connected with them zz széw. Having recently had 
the opportunity of observing the growth of a large mass of 
Ozonium and the development of sporophores connected with it 
a short account may not be uninteresting. 
In a large earthen vase, some two feet in height, which was 
standing in the entrance hall of my house in King’s Lynn, a 
flower pot containing a plant of Aspidistra was placed. Now, 
the vase was far too deep for the flower pot, so that the latter 
had to be raised from the bottom of the vase by placing it upon 
a block of wood, some six inches deep, as well as half an 
ordinary building brick. During the summer the Aspidistra 
was watered very freely, so that a considerable amount of water 
ran through the flower pot and collected in the bottom of the 
vase. It remains only to be added that the mouth of the vase 
was narrower than its body, so that the space between it and 
the top of the flower pot was only a narrow chink, and even this 
