BY D. McALPINE. 95 



Killara, Yic; on living leaves of a flowering specimen of Diuris 

 pedunculata, R.Br.; Oct., 1902. 



Although this orchid is rather a common one, only a single 

 diseased specimen was found. The lower linear leaves and one 

 of the three upper bract-like leaves were affected. The lower 

 leaves were densely crowded on both surfaces with the black soot- 

 like fungus in patches, while the upper leaf was mainly attacked 

 on the outer surface. The basal leaves ultimately shrivelled up 

 and withered, but the plant otherwise looked as healthy and 

 vigorous as the numerous unaffected specimens growing near. 



22. ASCOCHYTA ANTHISTIRI.E, n.Sp. 



Perithecia black, erumpent, scattered, elongated, lenticular, 

 depressed, dark brown by transmitted light, membranaceous, with 

 central round pore, 150-175 x 105-115 /x. Sporules numerous, 

 bright olive in mass, pale individually, elliptical, 1 -septate, not 

 constricted at septum, rounded at both ends but slightly tapering 

 towards one end, 10-11 x 4-4 J /j. 



Leongatha, Vic. ; on dry, discoloured, shrivelled portions of 

 living leaves of Anfhistiria ausfralis, associated with Spharella 

 fmthistirice, n.sp., of which it is probably the pycnidial stage; 

 Nov., 1902. 



This species differs from A. graininicola, Sacc, in the larger 

 perithecia and the elliptical, olivaceous spores. 



23. ASCOCHYTA CRYPTOSTEMM.E, n.sp. 



spots irregular, indefinite, dark-coloured, on upper surface of 

 leaves. Perithecia black, punctiform, erumpent, scattered or 

 loosely gregarious, golden-yellow by transmitted light, dej^ressed- 

 globose, membranaceous, fragile, with apical pore, 140-170 /x diam. 

 Sporules hyaline, cylindrical, rounded at both ends, straight, 1- 

 septate, not constricted at septum, 7-10 x 2|-3 /m. 



Doncaster, Vic; on brown withered leaves of Cryptosteimna 

 calendidaceum, R.Br.; Oct., 1902. 



It differs from A. microspora, Trail, in the much larger peri- 

 thecia which are not densely gregarious, and the slightly longer 



