200 THE BOTANICAL MAGAZINE. [Voi. xxv. No. 296. 



from which sahnon-coloiired sticky spore-masses appeared as in 

 the case of the persimmon. The spores thus formed are exactly 

 the same as those on Diospyros both in their shape and size. 



Nomenclature of the Fungus. — From the morphological 

 characters described above, one may readily recognize our fungus 

 to be a species of Gloeosporium. Compared with Gloeosporium 

 Diospyri Ell. et Ev. (2), which is parasitic on the leaves of 

 Diospyros virginianus, our fungus differs from it in many points, 

 especially in its habits and in the shape and size of its spores. 

 In Gloeosporium Diospyri, acervuli are formed on the upper 

 surface of the leaf along its veinlets, and the spores are ovate 

 measuring 6-14 x 5-7 fjt. 



YosHiNo's Gloeosporium (6) on the fruit is most probably 

 identical with the fungus in question, but its detail accounts 

 and description have not yet been published. 



According to my own infection experiments, our fungus can 

 be transferred to a ripened apple, when the spores are inoculated 

 on its wounded surface ; but the reciprocal infection of the 

 spores of Glomerella rufo-maculans (the bitter-rot fungus of 

 apples) on a young green persimmon always ended in negative 

 results. 



Besides these biological differences, one can also recognize 

 some morphological differences between these two fungi. The 

 size of the conidia of Glomerella rufo-maculans, though it varies 

 by the authors, is commonly described as 10-15 x 4-6 // ; and 

 the dimension is practically the same as my own measurements 

 on the specimens preserved in our college herbarium (12-20 x 

 4—6 jui). The spores of Gloeosporium on persimmon are longer 

 than those of G. rufo-maculans, and some attain to 25 /^ or 

 rarely even to 32 fj. in maximum length. As to the shape, the 

 spores oii Glomerella rufo-maculans are ellipsoidal, oval or fusiform 

 and often pointed at one end (3); while those of the persimmon 

 fungus are cylindrical or long ellipsoidal, and almost always 

 rounded at both ends. 



The spores of Gloeosporium, as many authors have clearly 

 stated, vary greatly in shape as well as in size by the difference 

 in the cultural media aud other external conditions, so that no 



