73 2 
Notes . 
newly opened apothecia we find the cracks occupied by a yellowish exudate. The 
exudate dries on exposure to the air and pulls up the protruding inner wall of the 
roof, which finally becomes broken. The apothecia are now fully open, and the 
ascospores are liberated in enormous quantities. The young ascus shows a well- 
defined nucleus with a well-marked nucleolus. The needle-shaped spores are grouped 
in the ascus, a central spore being surrounded by the remaining seven, each with 
a well-marked sheath. The ascus opens in an irregular manner and the spores are 
shot out of the apothecia periodically. S. G. JONES. 
University College of Wales, 
Aberystwyth. 
