BRIEFER ARLICLES. 
NEW SPECIES OF TRIMMATOSTROMA. 
(WITH THREE TEXT FIGURES) 
In the summer of 1898 I had my attention called to the pathologi- 
cal condition. of the balsams in many parts of the province of Ontario. 
The disease, however, had not as yet done much damage, a dead branch 
Fic. 1. Zrimmatostroma abietina: a, cross section of a diseased leaf of Adzies 
balsamea, showing the sporodochium (heavily shaded portion) and a number of loose 
conidia (X 450); 4, a group of conidia of various forms (450); ¢, a single conidium 
(X 1060); d, germinating conidium after thirty-six hours in hanging drop of water 
(X 450); ¢, chain of unicellular conidia (X 1060). 
here and there being the only warning sign of what later proved itself 
to be a disastrous outbreak. The woods at that time presented 2 
peculiar mottled appearance. It was thought at the time that in this 
case we had to deal with a fungus form of some kind, but all efforts to 
collect material having it in fructification proved futile. Sections of 
400 [ DECEMBER 
