44Q DISEASES OF CULTIVATED PLANTS 



patches. The leaves of cauliflowers and other varieties of 

 the cabbage family are also attacked. 



The conidia escape in the form of viscid, whitish tendrils, 

 and are dispersed by rain, insects, etc. Conidia sausage- 

 shaped, hyaline, continuous, 18-24X5-7 n- 



Gloeosporium bicolor (M'Alp.) forms pustules first wax- 

 yellow, then brown, on ripe grapes in Australia. No bitter 

 taste is said to be imparted to the fruit. This species is 

 stated to differ from allies in the conidia being colourless, 

 even in the mass. This is not a very satisfactory discrimina- 

 tion, considering that the conidia of all known species of 

 Gloeosporium are colourless. 



M'Alpine, Add. to Fungi on the Vine in Australia^ p. 38. 



Gloeosporium theae-sinensis (Miyake) is described as a 

 parasite on tea in the neighbourhood of Tokio. It forms 

 large, reddish-brown, then grey spots on the leaves. Spores 

 hyaline, fusiform or oval, 4-6 x 2 /i. 



Miyake, J., Bot. Mag. (Japan), 21, p. 43 (1907)- 



Gloeosporium theae (Zimm.) forms reddish-brown spots on 

 leaves of the tea plant in Africa; spores cylindrical with 

 rounded ends, 14-19X4-^ /'. 



Gloeosporium pest is (Massee) is destructive to yam leaves 

 in Fiji. It is found that not all varieties are attacked, and 

 the injury is most severe during an exceptionally wet season. 

 The entire upper surface of the leaf is often covered with 

 blackish blotches, resembling Gloeosporium musae (Massee) 

 in habit and general appearance, but differing in the smaller 

 spores. 



Spots blackish-brown, crowded ; conidia ovate-oblong, 

 continuous, hyaline, [8-20X5 /' 



Massee, Ke:v I'ulletin, 1908, p. 219. 



Gloeosporium laeticolor (berk.) causes depressed, whitish 

 spots, with a dark border, on almost ripe peaches; rosy 

 pustules are grouped in circles on these spots. It has been 

 supposed that the same fungus attacks nearly ripe figs. 

 Conidia extruded in rosy tendrils, elliptic-oblong, 16-17 /< 



long. 



Gloeosporium mezerei (Cke. and Mass.) forms small brown 

 pustules on the upper surface of mezereon leaves. Conidia 

 elliptical or almond-shaped, 15x6 /. 



