FUSICLADIUM, Sp. 

 (Black Canker of Hevea brasiliensis.) 



This disease has been reported to occur in Java and in 

 the Malay States ; at present it is not considered to be of 

 a serious nature. 



The cut ends of branches or stems left by pruning are 

 the parts which are first affected. Later, the leaves become 

 dry and yellow and finally fall ; the flow of latex is 

 diminished and soon ceases. Usually the plant dies soon 

 after it is attacked. 



Bernard : Bull, du Departement de VAgric. aux Indes 

 Ne'erl., No. 12, Buitenzorg, 1907. 



Ridley : Agric. Bull, of the Straits and Federated 

 Malay States, Vol. VIII, No. 10, p. 441, 1908. 



CLADOSPORIUM ELEGANS, Penzig. 

 (Disease of Orange). 



In addition to the orange the fungus attacks various 

 species of Citrus. It has proved to be injurious in the 

 Southern States of America and iu Cuba, as well as in 

 Southern Europe. 



The disease appears as white or cream-coloured spots on 

 the leaves, young twigs and fruits. When the leaves are 

 badly attacked they become curled and are covered with 

 warty protuberances. 



Spraying with dilute Bordeaux mixture should be com- 

 menced early and repeated at short intervals. 



Diagnosis : — Tufts epiphyllous, gregarious, distinct, 

 seated on arid spots ; conidiophores erect, fasciculate, simple, 

 sparingly septate, distinctly sinuous, brown, 160-200 by 5-6 

 microns ; conidia apical and lateral, continuous or 1 -septate, 

 elliptic-oblong, epispore delicately granulated, pale-brown 

 or yellowish, 18-20 by 5-6 microns. 



MASSEE : Text Book of Plant Bis., p. 436. 



COOKE & Horn : Bull. 9, Estac. Cent. Agron. de Cuba. 



THIELAVIOPSIS ETHACETICUS, Went. 



(Pineapple Disease of Sugar Cane). 



The cuttings of the sugar cane are attacked by this 

 fungus in the West Indies, Java and India. The disease 



56 



