20 THE JOURNAL OF BOTANY 
had died. At the damaged areas a number of black sclerotia were 
found on the outside of the bark, or half embedded in the cracks and 
inequalities caused by the disease. They varied greatly in size and 
orm, but as a rule they were round and elongate, like small frag- 
ments of a stick. They were accompanied in some instances by 
of the fungus ; the injury could be traced up the stem almost to the 
first branches, and downwards into the roots for some distance. 
The conidiophores are of the typical Polyactis type. The brown 
stalks vary in width from 12 to 17 p, and they reach a height of rather 
over half a millimetre before the first head of spores is formed. 
shrivel up as tle spores mature. Any branch that is not so cut off 
grows out and bears similar heads of spores. The main stalk also 
continues to grow, and produces branched heads of spores at intervals 
of about one-third of a millimetre. € spores are oval in form, and 
are rather small, measuring from 8-11 p by 4-6 p. 
Pexiza also grew from one of the sclerotia in the damp 
chamber, several specimens of which had been placed there on 
March 8th. On April 16th I first noticed the stalk of the Peziza, 
already about a centimetre in height; it emerged from the base of 
the sclerotium, and curved upwards through the Botrytis growth. 
Four days later, a slight depression developed at the tip, and in a 
fortnight, without much further expansion, the whole thing began 
ecay. I cut sections of the half-formed cup, and found that the 
hymenium had developed, the asci had burst, and the ascospores 
were mostly dispersed. A few still remained in position; they were 
form, and measured from 10 to 12 ex 6p. I couldnot get 
the measurements of an ascus, but the hymenium was some 160 
in depth. The size of the spores and the general appearance of the 
brownish stalk correspond with the description of Sclerotinia Fucke- 
liana, the disease of vine leaves and twigs, of which the conidial form 
is Botrytis cinerea. De Bary states y emphatically in hi phology 
of the Fungi, p. 225, that the two forms do not grow from the same 
sclerotium. In this cage they both grew together. 
