174 Transactions British Mycological Society. 



by means of a cross septum. No mycelium or conjugation 

 observed. 



The yeast belongs to the genus Schizosaccharomyces. It some- 

 what resembles 5. octosporus Beijerinck in the shape of the cells 

 and spores, in its rapid sporulation, and in the absence of a 

 film on beer-wort cultures, but differs from it in the absence 

 of conjugation phenomena, and of fermentation with lactose, 

 laevulose and mannite, 



D. Fusarium. 



Five-septate Fusarium spores are frequently found in the 

 brown slime-flux. These belong to a group which discolours 

 sterile potato plugs and produces buff coloured pionnotes and 

 blue sclerotia on culture media. 



Morphological characters. Five-septate macroconidia almost 

 straight, but with a crook at one end; from a steamed Lathyrus 

 stem 40-55 /(x (av. 46 ju) x 5-4 /a. Four-septate spores 37-47)^1 

 (av. 41*4 ju.) X 4*5 jM. Microconidia produced on verticillate or 

 simple conidiophores, the latter about 50 /x long. Microconidia 

 ellipsoidal about 7-2 x 2-5 /x, but varying greatly in size and 

 shape. Intercalary chlamydospores have been observed. 



E. Other organisms. 



Verticillium cinnaharinum Reinke et Berthold (formerly Acro- 

 stalagmus cinnabarinus Corda) occurs very commonly on plate 

 cultures from old fluxes, especially in winter and spring. A white 

 Sporotrichum which was very common is probably identical with 

 5. carnis Brooks and Hansford {15). Trichoderma lignorum (Tode) 

 Harz was frequent on old fluxes of elms and horse-chestnuts. 

 Cephalosporium and Penicillium species were common. Dematium 

 pullulans and non-sporing pink yeasts also occurred commonly 

 during the winter months. 



Chlorella vulgaris Beiker and Protococcus viridis Ag., algae 

 found on the trunks of trees, apparently grow saprophytically 

 in the flux. They could be isolated from all the brown fluxes by 

 means of Detmer's solution and Detmer's agar. It was dis- 

 covered, however, that the Chlorella was able to grow luxuriantly 

 on ordinary culture media, such as potato agar, Dox's agar, 

 beer-wort agar, etc. 



Ludwig(i6) describes two new species of algae from the slime- 

 fluxes, but we have not seen any form to correspond with his 

 descriptions. 



4. Apple Flux. 

 (a) General. 



A flux has been noticed on branch wounds of apple-trees in 

 and around Cambridge, which appears to have a very typical 

 flora. It seems to be more prevalent on certain varieties of 



