HOTSON. — CULTURE STUDIES OF FUNGI. 291 



Ocrasionally a coiiidiophore may form an intercalary swelling with 

 conidia on it, as if it were a secondary head (Figure 10, Plate 7). 



C'hlaniydospore-like hodiivs occur quite fre(iuently. They are 

 mostly intercalary but sometimes terminal (Figures 13-16, Plate 7). 

 When young they are colorless, or opalescent, slightly swollen, ovoid 

 cells, filled with granular material. At maturity they are usually 

 more spherical and have thick l)rown walls (Figures 13, 15, Plate 7). 

 Occasionally more than one cell takes part in the formation of these 

 spore-like bodies. Figure 16, Plate 7, shows two such cells and 

 Figure 5, Plate 7, a large number of "chlamydospores" closely packed 

 together. 



There are several forms that have x\spergillus-like fructifications, 

 similar to those just described and which may be considered briefly 

 at this point. As has already been noted, Eidam ('83) describes 

 these structures in his account of Papidospora aspcrgilliformis, and 

 also chlamydospores resembling those of Acrernoniclla atra Sacc. 

 {Acremonium atrum Corda.) such as are produced by Mclanospora 

 cervicula. Eidam, however, described two types of bull^ils in P. 

 asptrgiUifonnis, a small one that develops in a manner similar to 

 the form examined by the writer, and a large one, the primordium of 

 which is spiral, resembling that described by Bainier ('07). It is quite 

 possible that Eidam has here confused the primordia of two species 

 the larger of which corresponds in all essentials to that studied by the 

 writer. On the other hand his smaller bull)il would correspond more 

 closely with that studied by Bainier. 



Bainier ('07), in his article on Papulospora aspcrgilliformis also 

 refers to its " Aspergillus-like" conidial fructification. According 

 to his account the primordium of the bulbil consists of a short lateral 

 branch which coils up spirally and eventually produces a more or less 

 spherical bulbil. Under certain conditions of nutrition and moisture, 

 however, the latter are said to produce large sclerotium-Iikc bodies, 

 which in turn may be induced to develop further and form perithecia, 

 which are referred to the genus Ceratostoma. This form described 

 by Bainier seems to be difi"erent from the one under consideration, 

 since the bulbils of the latter flo not develop by means of a spiral 

 and are large and sclerotium-like. The present form, moreover, has 

 been grown for nearly three years and during that time it has never 

 been observed to produce any other type of bulbil than the one de- 

 scribed. It has, however, produced in abundance conidia on Asper- 

 gillus-like conifliophores which sometimes occur in direct connection 

 with the bulljil (Figure 8, Plate 7). This species has been compared 



