4 CIRCULAR 8 5 3 ; U. S. DEPARTMENT OF AGRICULTURE 



various bulletins. These studies have shown that Clitocybe root rot is 

 of frequent and widespread occurrence in that State, attacking forest 

 and fruit trees, tung-oil trees, and a large variety of ornamental trees, 

 shrubs, and vines (#0), including many exotic ones. It has been 

 recorded as attacking 210 species of plants belonging to 137 genera 



-ia* 



Figure 1. — Recorded distribution of Clitocybe 

 dicating localities where from 1 to more 

 made. 



root rot in Florida, the dots in- 

 than 50 collections have been 



and 59 families. Of these, members of the Casuarinaceae, Rosacea e. 

 Leguminosae, Rutaceae, and Myrtaceae are represented with outstand- 

 ing frequency. Conifers are attacked as well as broadleaf trees, and 

 even bananas {23) and palms. The known distribution of Clitocybe 

 root rot in Florida is shown in figure 1. 



