MELIOLA 



16' 



aphides should be kept in check. Resin wash is the best- 

 known remedy for the sooty moulds. 



Often covering the entire surface of the leaf with a black, 

 velvety felt ; perithecia narrowly ovate, elongated, asci pear- 

 shaped, 48-50x30 p, 8-spored ; spores hyaline, i-septate, 

 elliptical, slightly constricted at the septum, 12-15 X 5-6 /* 



MELIOLA (Fries.) 



Perithecia seated on black, radiating mycelium, globose, 

 often furnished with specialised appendages ; asci subglobose, 



Fig. 42. Meliola Penzigii. Sooty mould of 

 orange and citron, on orange leaves. Nat. size. 



2-8-spored ; spores 2-5-septate, sometimes muriform, hyaline 

 or coloured. 



Sooty mould of orange. This disease is more or less 

 prevalent wherever the orange is cultivated. In Europe and 

 the United States the injury is usually attributed to Meliola 



