JEHANGIR FARDUNJI DASTUR 229 



cuttings of cacao, the thickest as thick as a man's thumb,were also inoculated in 

 a similar way as the fruits. These cuttings were stood in flower vases filled 

 with water and they were then kept in moist chambers but the inoculations 

 here also failed. Petch^ having recorded Artocarpus incisa as being one of the 

 hosts of Ph. Faberi, fruits and cuttings of this plant and of Artocarpus in- 

 tegrifolia were inoculated in the same way as those of Theobroma Cacao ; 

 they also gave the same negative results. 



Coleman^ has shown that very young seedlings of Solanum melongena and 

 Lycopersicum esculentam between one and three inches high possessing two 

 or three leaves can be successfully inoculated with Ph. Faberi from cacao 

 fruits ; seedlings of these plants which had not dropped their cotyledonous 

 leaves were inoculated with vigorously growing mycelium from pure cultures. 

 In every case the inoculation failed. Very small plants of potatoes also failed 

 to take the inoculation. But successful infections were secured on seedlrngs 

 of Gilia spp., Clarkia spp., Salpiglossis spp., and Ricinus communis. The 

 former three garden plants have been known to serve as hosts for Ph. 

 omnivora and Ph. parasitica, and Clarkia and Salpiglossis also for Ph. Arecce 

 and Ph. Faberi. 



In the Philippines, Mendiola and Espino^ have recently found a disease 

 of fruits of Carica papaya caused by Ph. Faberi, and this fungus from cacao 

 they have succeeded in inoculating on papaya fruits ; but these fruits did not 

 give successful infections when inoculated with the Phytophthora under study. 



The conidiophores on the fruit in Burma burst through the epidermis in 

 clusters, they are simple or occasionally branched, and extremely short or up 

 to 102/A long. They at times are so small that the sporangia appear almost 

 sessile on the epidermis. Petch does not give his measurements of Ph. Faberi 

 on Hevea but quotes those given by von Faber* who has studied this disease 

 on cacao and according to whom the sporangiophores measure 150 — 200/x. 

 Sporangia of the Burma fungus are generally pear-shaped and not very 

 variable in shape ; on fruits and stems they measure 20*7 — 35'7x 15*0 —25*5//. 

 In rare cases the extreme length was 44"2ju and breadth 29*0/i. The 



1 Fetch, T. Ceylon Administration Report, 1906, Roy. Bot. Gardens. 



2 Coleman, L. C. Diseases of the Areca Palm, I, Koleroga. Mycol. Ser. Bull. No. II, Dept. 

 Agri., Mysore State, 1910, p. 80. 



8 Mendiola, N. and Espino, R. B. Some Phycomycetous Diseases of Cultivated Plants in 

 the Philippines. The Phihppine Agriculturist and Forester, V, No. 3, 1916, p. 67. 



4 Von Faber, F. C. Die PJiytopUhora—YAXxiQ der Kakaofriichte. Arb. Kais. Biol. Anst. 

 Land-und Forstwirtschaft, VII, 1910, p. 200, 



