196 FETCH : 



The discrepancies between the accounts furnished by Rick 

 and Patouillard suggest that these authors were deahng 

 with different fungi. It is, moreover, quite possible that 

 the three collections described by Patouillard were not related. 

 Evidently Dussiella requires further investigation on the 

 spot before the various accounts can be harmonized. But 

 in any case it does not appear that any of the fungi described 

 under this name can be referred to Hypocrella. The stratose 

 stroma, and the conidial stages described by the three writers 

 quoted, are unlike anything in the latter genus. 



The genus Moelleriella has already been referred to, arid in 

 the opinion of the writer the type specimen, Moelleriella 

 sulphur ea, is Hypocrella phyllogena. Rick has described 

 another species of Moelleriella under the name of M. nutans, 

 which grew on living stems of Arundinaria. He states that 

 it possesses three different kinds of asci. The first contains 

 filamentous septate spores, which are extruded in their un- 

 divided condition ; this form is rare. The second contains 

 spores which divide into oblong-oval part-spores in the ascus, 

 though they may be extruded in a continuous chain ; this is 

 the most usual form. In the third type the " sporenanlage " 

 is filamentous, but divides into part-spores before the 

 formation of a spore wall, and the separate joints develop as 

 independent spores ; when ripe the part-spores are oval, or 

 cylindric with truncate or pointed ends. 



Rick considers that his new species establishes the vaUdity 

 of Bresadola's genus. But, except for the statements concern- 

 ing the extrusion of the spores, his description is exactly 

 what would be written by any one who regarded the differences 

 in the asoi of Hypocrella phyllogena as final stages instead 

 of stages of development. Asci, whose contents could be 

 imagined to answer in every respect to Rick's descriptions, 

 may be found in any collection of Hypocrella phyllogena 

 {Moelleriella sulphur ea). I have examined the specimen of 

 Moelleriella nutans in Herb. Berlin (Rick, Fungi Austro- 

 Americani, 89), but was unable to find perithecia or pycnidia 

 in it, and it did not appear to have the structure of Hypocrella. 

 Rick describes it as having paraphyses ; in that case it differs 

 from Hypocrella and from the type of Moelleriella. 



