Cauaad by Clitocybe Tabi 
V> 
A. —One-month-old Petri dish culture of Clitocybe root rot, isolated from a recently killed vine, on 
raisin agar. The marginal mycelium is whiter and more superficial than in the case of cultures 
on other agars used. About IH natural size , _ . 
B. —Under side of same culture showing the dark-brown discoloration of the agar and the character¬ 
istic whitish rhizomorphs beginning to develop beneath the surface of the agar. About I74 
natural size 
C. —Cluster of sporophores of Clitocybe tdbescens developed in artificial culture made by inoculating 
a sterilized length of root of Vitis cordifolia in a large test tube. This cluster of sporophores 
developed to maturity and cast a print of white spores on the side of the tube within one 
month and three days from the time the length of root was inoculated About natural size 
