Correspon de nee 



603 



pseudoperidium of barren cells and resembling the yEcidiospores of 

 Puccinia." 



The teleutospores of Gyiiinosporaft^iu n clav iricEjorme occur on 

 the branches of the Juniper in April and May, causing" fusiform 

 swellings. The spore mass is firm at first, then gelatinous and pale 

 brown. Its vEcidiospores may be found on the Pear and Hawthorn 

 from June to August. 



The teleutospores of G. juniberinum appear in May. In this species 

 the spore mass is brown and firm at first, then soft and orange 

 coloured. The ^cidiospores may be found on the Mountain Ash 

 from July to October. 



The best book on the subject is Dr. Plowright's " Monograph of 

 the British Uredinea? and Ustilagineae (Kegan, Paul and Co.). 

 Additional papers by the same author contributed to the Transactions 

 of the British Mycological Society should also be consulted. 



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