38 NORTH AMERICAN SORDARIACEAE 
conditions of moisture reappear the spores will be ejected at a 
favorable time for germination. Whether this is a common prac- 
tice or not can not be asserted, but that it does at times occur is 
without question. It is easy to conceive how such an arrange- 
ment might be of a decided advantage to the plant, whose environ- | 
ment is subject to great variations of moisture in short intervals of 
time. 
