i8o Sorosporium. 



Paspalum. 



37. Sorosporium paspali McAlp. 



Sori in inflorescence, usually destroying tlie whole, and leaving the 

 elongated remains of the inflorescence surrounded by a black mass 

 of spores. 



Spore-balls dark-brown, globose to oblong or irregular, 30-40 // 

 in diam. or 30-50 fx long, at first firm, but afterwards readily sepa- 

 rating. 



Spores brownish individually, oblong to polygonal or pear-shaped) 

 with thick epispore, smooth, variable in size, 12-18 x 9-14 ^, 

 average 13-16 x 10-13 fi. 



On Paspalum scrobiculatum L. 

 Queensland — (Bailey) . 



This specimen is given in Cooke's Handbook of Australian Fungi as Usti- 

 lago cesatii F. v. W., and as occurring in both Victoria and Queensland. 

 Portion of the original material forwarded to Cooke shows it to be a Soros- 

 porium, the spores being aggregated in balls and afterwards separating. 

 The individual spores are smooth and not echinulate, so that it is quite a 

 different smut. 



(Plate XLIV.) 



Scirpus, J uncus. 



38. Sorosporium piluliformis (Berk.) McAlp. 



Uredo piluliformis Berkeley, in Hook. Journ. Bot. II., p. 423 

 (1843). 



Ustilago piluliformis (Berk.) Tulasne, Ann. Sci. Nat. p. 93 (1847) 

 Cooke, Handb. Austr. Fung., p. 325 

 (1892). 



Ustilago marmorata Berkelev, Linn. Journ. XIII., p. 174 (1872). 

 Cooke, Handb. Austr. Fung., p. 325 (1892) _ 



Ustilago muelkriana Thuemen, Myc. Univ. No. 623 (1879). 



Cooke, Handb. Austr. Fung., p. 324 (1892). 

 Sori in ovaries, compact, sometimes causing a marbling of the unbroken 

 epidermis which is ultimately ruptured and thrown off. Spore- 

 balls generally in clusters of five or six, subglobose to oblong, dark 

 olivaceous to dark-brown, readily breaking up after they are fully 

 formed, 49-120 /< long. 



Spores very irregular in shape and size, thick-walled, tubercu- 

 late, subglobose to oblong or polygonal, 10-18 ^ long. 



On Scirpus prolifer Eottb. = Isolepis prolifera E. Br. 



South Australia— Mount Gambler, 1854 (Mueller, No. 94). 



