218 FUI^GI AXD PUXGICIDES 



the epidermis of the leaf, and then push out several 

 stalks, on the ends of which the sj^ores are produced. 

 The latter (Fig. 88 a) are long and slender, and divided 

 by several transverse jiartitions. They germinate when 

 on moist alfalfa leaves, bv sendins: out a sleiider thread, 

 which penetrates the skin of the leaf and starts the 

 funsfus anew. 



Treatment. — Upon this point Professor Chester 

 says : ''In case it should be necessary seriously to com- 

 bat this difficulty, the writer would advise that all dis- 

 eased patches or areas be cut and burned, or composted 

 with an excess of lime." 



Literature. — The only article of importance con- 

 cerniug this disease yet published is the one above re- 

 ferred to, which may be found iu the Second Report of 

 the Delaware Experiment Station (1889, pp. 95-97). 

 Another disease of alfalfa is briefly described in the 

 same connection, and another in the report for 1890. 



