Zeller: Notes on Crytoporus volvatus 
123 
The mycelium grows abundantly in cultures, and in a period of 
four weeks conidiospores were formed. These varied from ellip- 
soid to pyriform in shape. They appear on short conidiophores 
from the clamp-connections which are abundant in the hyphae. 
The first stages of sporophores were obtained in cultures. 
Small sticks of hemlock wood about one inch in diameter were 
cut so that they would stand erect in an Erlenmeyer flask. The 
borings of insects (to which reference is made later) were imi- 
tated by boring a small gimlet hole lengthwise following the pith 
Fig. I. Conidiospores formed in cultures of Cryptoporus volvatus. 
of the stick. At right angles to this, other gimlet holes were 
bored, some near each end of the sticks. These sticks were put 
in flasks containing some agar and in such a way that some of the 
radial gimlet holes were just above the surface of the agar. 
After sterilization the agar was inoculated with Cryptoporus and 
the mycelium spread to the stick, entered the gimlet holes below, 
and emerged in the form of buttons above. These buttons grew 
in some cases to be 5-10 mm. in diameter but did not develop the 
internal cavity. The buttons formed in cultures were pure- 
white and without the ordinary coat of resin. The surface was 
perfectly even, dry, and glabrous. 
The intimate relationship which exists between the attack of 
