178 



CoNioTHECiUM CHOMATOSPORUM, Corda. On twigs of Pyrus 

 Malits, L. Blackwood, Nov., 1914, R. Fowler; Mount Gam- 

 bier, July, 1915; Wirrabara, Dec., 1917. Causing cankers on 

 the bark of apples and pears. The severe scabbing of the 

 fruit by this fungus, which occurs in South Africa and other 

 countries, has not been recorded here (Osborn, 1918, 1921). 



CoNiOTHECiUM SCABRUM, McAlp. On fruit of Citrus 

 OAirantium, L., causing irregular, flaky, scabbed areas. Ken- 

 sington Gardens, July, 1917; Enfield, Mar., 1918; Berri, 

 June, 1922, R. Fowler (McAlp., 1899, p. 80). 



FuMAGO VAGANS, Pers. On canes of Vitis vinifera, L., 

 forming a black sooty coating, "fumagine." Clare, May, 

 1921, T. G. B. O. (McAlp., 1897, p. 38). 



Harpographium corynelioides, Cke. and Mass. Causing 

 swollen lesions on the stems of Leptospermum scoparium, 

 Forst., with the short, branched, brown conidiophores pro- 

 jecting from them. Clelaud Gully, near Mount Compass, 

 1921, T. G. B. O. (McAlp., 1895, No. 1997). 



OiDiUM oxALiDis, McAlp. On living leaves of Oxalis 

 corniculata, L. Forest of Kuitpo, under ash trees, Dec, 1921, 

 G. S. (McAlp., 1895, No. 2276). 



Sterigmatocystis nigra, v. Tiegh. On ripe grapes, the 

 skin of which had burst. Southwark, Feb., 1921, G. S. 

 (McAlp., 1897, p. 46). 



PHYCOMYCETES. 



Plasmopora viticola, (B. and C.) B. and de T. On 

 living leaves of Vitis vinifera, Jj. McLaren Vale, Feb., 1921; 

 Watervale, Seven Hills, Berri, and Renmark, April, 1921. 



This fungus appeared first in Australia at Rutherglen, 

 Victoria, in the season 1916-17, and in 1917-18 did consider- 

 able damage. From this locality it seems to have spread east- 

 ward into New South Wales, and finally Queensland (1920-21). 

 Its progress westward of Rutherglen was slow, and not till 

 1920-21 did it appear at Mildura. From thence it passed 

 down the Murray, appearing at Renmark, Berri, and Water- 

 vale. It was also said to occur at Angaston. The attack 

 was a slight one, evidently resulting from infection late in 

 the season. 



This outbreak is interesting because of the example it 

 gives of the power of dispersal of a fungus disease by wind- 

 borne spores. Mildura, the seat of the nearest epidemic out- 

 break in the past season, lies 100 miles east of Renmark, up 

 the Murray. There is regular traffic between the two places 

 by motors, so that it is possible that the spores might have 



