Graphiola. 297 



of numerous loosely connected teleutospores, 50-ioo/x, in 

 diameter. Teleutospores roundish, shortly elliptical or poly- 

 gonal from mutual pressure, yellowish brown, transparent, 

 rough, with minute tubercles and toothed ridges, 12-18 x 



IO-I2/U,. 



Synonym. 

 Sorosporiuni saponarm. Rudol., " Linnaea," vol. iv. p. 116. 

 Schrot., loc. cit., p. 288. Winter, loc. cif., p. 104. 



On Dianthus delioides. Norwich, in gardens. 



Biology.— See p. 85. 



SUPPLEMENT. 



Allied and Associated Species. 



Doubtful Ustilaginei (Graphiola, Entorrhiza, Tuberculina). 

 The descriptions of the British species of Protomyces are also 

 given, both because they are apt, on cursory examination to be 

 confounded with the Entylomata, and also because they have 

 been described with them.* 



GRAPHIOLA. Poiteau. 



Mycelium in the tissues of the living plant, forming small con- 

 ceptacles, which burst through the cuticle of the plant. Peridia 

 roundish, the outer hard, formed by the intertwining of the my- 

 celial hyphje, the inner peridium thin, enclosed by the outer, 

 filled with hyphse, sterile and spore-bearing. Spore-forming 

 hyphge at the base of the conceptacle, yellow, filamentous, 

 crowded, becoming septate above into short joints, of which the 

 uppermost gradually mature. Spores formed from cells, which are 

 given off laterally from the joints, and which become abjointed 



* Professor Marshall Ward considers that the Schinzia leguminosaruin of 

 Frank, which causes the tubercular swellings on the roots of the Leguminosie, 

 is allied to the Ustilagineae, but the evidence {Phil. Trans., 1S87, pp. 539-562) 

 adduced by him seems hardly to be conclusive. 



