194 TiUctia — Entyloma. 



Triticum. 

 58. Tilletia tritici (Bjerk.) Wint. 



Winter, Die Pilze, p. 110 (1884). 

 Brefeld, Uiiters. Gesammt. Myk. V., p. 14(3 (188.3). 

 Sacc. Syll. VII., p. 481 (1888). 

 ' Lycoperdon tritici Bjerk. in Act. Suec, p. 326 (177-5). 



Tilletia caries Tul. Mem. Ust., p. 113 (1847). 

 Sori in ovaries, blackish to olivaceous, more or less concealed by the 

 glumes and all or only portion of the ovaries of a spike infected, 

 foetid. 



Spores spherical or sub-spherical generally, black in the mass, 

 brownish individually, 15-20 /i(, average 16 jtt diam., but some may 

 reach a length of 22 ^ ; epispore furnished with ridges 1-1 ■ 5 /x high 

 and forming a network with meshes variable in size and shape, but 

 generally 3-4 // wide. 

 On Triticum vnlgare Vill. — Wheat. 



In all the States of the Commonwealth. 

 The spores are generally globose, but they are occasionally oblong to pear- 

 shaped, and then they may reach a length of 22 /(. They emit an ofiensive 

 odour something like stinking fish, and when the smut-balls are crushed or 

 moistened it is more pronounced. 



The name of T. tritici, although later in point of time than T. caries, is 

 preferred, because, under the latter name, other species were included. 

 Germination. — This has already been fully described at p. 70. 

 (Plates II., XLVIII.) 



ENTYLOMA De By. 



Sori generally in the leaves and permanently imbedded in the tissues, 

 usually forming discoloured but otherwise slightly altered areas. 



Spores single, scattered in patches through the tissue and produced 

 terminally or at intervals in the fertile hyphae, which do not disappear 

 entirely through the gelatinization. 



Grermiuation similar to that of Tilletia and often in addition to the 

 promycelial conidia, tufts of conidia are formed on protruding hyphae, which 

 arise from the spore-bearing mycelium. 



There is nothing characteristic about the spores to distinguish this genus, 

 only they are free in the tissues, which are usually pale-coloured, with 

 protruding conidial tufts. 



Australian species, 2. 



Eugenia. 

 59. Entyloma eugeniarum Cke. and Mass. 



Cooke and Massee, Grev. XIX., p. 92 (1891). 

 Cooke, Handb. Austr. Fung., p. 327 (1892). 

 Sacc. Syll. XL, p. 233 (1895). 

 Sori in irregular dark-brown pustules, which are flattened, rounded, or 

 confluent, and then angular, up to ^ mm., collected in large 

 patches on unier surface of leaf. 



Spores globose, oblong, or angular, with thick, smooth, pale- 

 brown epispore, 10-20 x 10-12 j^t, average 16 x 11 /.i. 



