564 THE FUNGI WHICH CAUSE PLANT DISEASE 



C. omi (Pass.) Pegl. and 



C. viridis E. & E. on ash; 



C. quercus Sor. on oak; 



C. cercosporoides E. & E. on tulip tree. 



An unidentified Cylindrosporium is reported from New Jersey 

 and New York as causing spots of tomato with considerable in- 

 jury. 



It is possible that this was in reality Septoria lycopersici.^' '"" 



Cryptosporium Kunze (p. 562) 



Acervuli discoid-conic, covered by a peridium, erumpent, form- 

 ing a pseudo-pycnidium from the substratum; conidia fusoid- 

 falcate, large, continuous, typically stipitate. 



Some forty species, chiefly saprophytes. 



C. leptostromiforme Kiihn forms black stromata on lupine. 



C. TtiiniTniim Lau. is the cause of a rose stem disease and of 

 cankers. 



Libertella Desmaziere (p. 562) 



Acervuli covered, irregularly and tardily erumpent, conidia 

 filiform, falcate, elongate, continuous. 



Some twenty species, chiefly saprophytes. 



L. rubra Bon. on Prunus =Polystigma rubrum. See p. 208. 



L. ulcerata Mas. causes cankers on fig trees in greenhouses.*" 



Moniliales (p. 479) 



The Moniliales differ from the Sphseropsidales in the ab- 

 sence of the pycnidium and from the Melanconiales in their 

 somewhat loose, separate hyphae, not innate and closely aggregated 

 as in the Melanconiales. There are genera on the boundaries 

 between these orders which are difficult to place, as for example 

 Coryneum, some species of which are often put in Helmin- 

 thosporium; Vermicularia which sometimes is confounded with 

 Volutella, etc. 



The order is one of very great diversity and contains a multitude 

 of forms. Many are only saprophytes while some are aggressive 

 parasites. 



