23 



fully the development of the species. There seem to te some dif- 

 ferences between the fungus as described by him and the material 

 at hand (Table II). Further study may justify describing it as a 

 new species. Neither the variation in spore measurement nor the 

 differences in shape of the spores alone would be sufficient 

 grounds for separating it. But vir.ide is described as having 

 at first catenulate spores. Examination of a large number of co- 

 nidiophores with spores varying in number from 1 to 3 or 4 has 

 never shown any to be so. They seem rather to form on the ends of 

 a hyphal thread, a new spore developing at the same point and push- 

 ing the old one aside (Fig. 6). 



Another difference seems to be in the development of the 

 mycelium. G. virid e forms a branch just below a septa which 

 grows up parallel to the main axis, this in turn branching in the 

 same manner. From just above a septa at the same time another 

 branch or series of branches is formed which grows down to the me- 

 dium parallel to the main axis but having positive geotropism (Fig. 

 15). This structure has not been observed in my material. In all 

 sections studied the main hyphal thread came directly from the me- 

 dium and produced the conidiophore unsupported by aerial branches. 



But a still more noticeable difference is in the color of 

 the masses of conidia. G. virid e Matr. is described as green. In 

 most cases the specimens in my cultures are black when mature, tho 

 some variation was observed in the young colonies. 



