230 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



The following technical description of the fungus is given as it has 

 not been bef< re described. 



Coniothyvium tumaefacicns Giissow, sp. n. Pycnidia scattered, free, 

 conical or globular, with round apical opening, blackish brown, from 300^ 

 to 345/< in diameter ; conidi* phores long, septate, unbranched, or slightly 

 branched at top, 29-38/. long ; conidia unicellular, pale dirty green, short 

 or long ovoid, 5-7^ x 8-4/u. 



Causing large warty excrescences from the size of a pea to that of 

 a walnut on shoots of blackberry. Kent, England. 



