248 BOTANICAL GAZETTE [October 



sporodochia are usually produced singly by a simple meristogenous 

 mode. In other instances sporogenous areas develop, and in these 

 I or 2 cells, in each of the closely lying hyphae, branch profusely 

 (fig. 1 13). Many of these branches unite into a mass and, without 

 the formation of a definite pedicel and peridium (fig. 114), give 

 rise to hundreds of conidiophores. 



PateUina, species indet.; from a quince {Cydonia vulgaris L.) 

 procured on the Champaign market, November 191 7. 



Strands of 6-20 hyphae are formed, and at some definite point 

 within the strand a few adjacent cells branch; thus a tuft of a 

 number of branches is formed (fig. 118). This tuft becomes slightly 

 larger at the upper end by continued branching, while the lower 

 portion constitutes a pedicel consisting of a few large branches, 

 where a few hyphae enter into its formation. A more substantial 

 closely formed pedicel or base is present if a larger number of hyphal 

 branches are concerned in its'origin (figs. 118, 119). The upper 

 half or less becomes cuplike, and the outer hyphae curve inward as 

 a superficial covering, while within conidiophores and conidia are 

 formed. The type is compound meristogenous. 



In PateUina the sporodochium develops in a very characteristic 

 manner, arising by the meristogenous method. A single isolated 

 mycelial thread gives rise to a very simple sporodochium. If a 

 number of mycelial strands are crowded together, each branches 

 characteristically, and the branches form a sporodochium of the 

 compound type. The type of sporodochium varies with the type 

 of base formed. 



VoLUTELLA Tode 



Volutella fructi S. and H.; procured from Mr. Wilmer G. 

 Stover, Ohio State University. It was isolated by G. C. Meck- 

 STROTH in the winter of 191 6 from a fruit of apple {Pyrus malus L.) 

 grown in western Ohio. 



The sporodochia form in abundance in plate cultures, the 

 primordium arising from a main hypha. A definite portion, 

 I, 2, or 3 cells in length, takes on a brownish color. These cells 

 divide and some of them branch, usually from one side only (figs. 1 20, 



