HYPOCREALES 



189 



ascospores, while still within the ascus, bud to form myriads of 

 hyaline spores. Conidial stages, so far as is known, belong to 

 Gvrostroma, Dendrochium, and Stilbella. Thyronectria mistro- 

 americana causes a wilt disease of Gleditsia japonica and a canker 

 disease of G. triacanthos [Seeler (1940, 1940a)]. 



Fig. 71. Cordyceps claviilata on Lecanium sp. on Morus rubra. 



Neocosmospora vasinfecta is of common occurrence in the 

 southeastern United States on the roots of cotton, cowpeas, pea- 

 nuts, and soybeans. This organism was reported to be connected 

 with Fiisarmm vasinfectiim, the cause of cotton wilt. Butler 

 (1910), working in India with this fungus on chickpea, Cicer 

 arietmimi, disproved genetic association with a parasitic Fusarium 

 but showed that it is connected \\ith a saprophytic species of 

 Fusarium. 



