IS2 British Fttnoi, 



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small gland. In many cases the neighbouring cells also 

 increase in number and form a gall-like body, usually 

 accompanied by discoloration of the tissues and 

 formation of bright tints. The protoplasm of the 

 parasite eventually becomes surrounded by a firm wall 

 and forms a resting-spore. Germination of the rest- 

 iug-spores takes place by two distinct methods : the 

 endospore with its contents escapes through a 

 rapture of the epispore, remaining attached to the 

 latter at one point, the protoplasm then breaks up 

 into a number of closely packed cells or zoosporangia 

 (the whole structure is known as a sorus) ; or 

 secondly, the contents of the resting-spore breaks up 

 into zoosporangia before escaping from the epispore. 

 In the above cases resting-spores alone are formed^ 

 and all such species having resting-spores only are 

 placed by De Bary in the subgenus Pycnochytrium. Tn 

 the subgenus Eusyncliytriwn^ in addition to the rest- 

 ing-spores desciibed above, summer sori are pro- 

 duced which originate like the sori in Pycnochy- 

 triunij but form zoosporangia at once, and these 

 summer sori are produced in succession throughout the 

 summer; in the autumn resting-spores are produced. 



Subgenus Pycnochytrium. Eesting-spores alone 

 present. 



Syncliytrium anemones, Woronin. 



Spots minute, reddish or violet, galls hemispherical, 

 violet, then blackish, depressed when dry ; resting- 

 spores solitary, rarely two in a cell, spherical or broadly 

 elliptical, brown, asperate, 75-150 ^ diameter. 



Syncliytrium anemojiefi, Woronin, Bot. Ztg. xxvi. 

 p. 101, pi. 3, figs. 31—36 ; Sacc. Syll. vii. n. 988. 



