50 DISEASES OF TROPICAL PLANTS 



CH. 



Other fungi 



is well known as the leaf-splitting blight, 

 of this order which cause diseases are Cytospora 

 sacchari, Butler, and Trichospliaeria sacchari, Massee, 

 on the sugar-cane (Fig. 32); Ustulina zonata, (Lev.) 

 Sacc. sp., Venturia Speschnewii, Sacc., Rosellinia 



FIG. 30. Section of cane leaf showing perithecium of Leptosphaeria saccliari. Also 

 two mature asci and three mature spores. (After Cook and Home, Bui. 7, 

 Estaci6n Central Agronomica de Cuba. ) 



bunodes, R. bothrina, Fetch, R. radiciperda, Massee, 

 on ( i tea and rubber ; Anthostomella coffeae, Del., 

 Rostrdla coffeae on coffee ; Sphaerella gossypina, 

 Atk., on cotton ; Pleospora theae, Speschnew ; Coleroa 

 venturioides, Speschnew, and Massaria theicola, Fetch, 

 on tea ; Calospora vanillae, Massee, of vanilla. 



Order 8. PEZIZALES. This is a very large order, in 

 which most of the species are saprophytic. They are 

 usually disc or cup - shaped when mature, and vary 



