UPON SCALE-INSECTS. 53 



1. On leaves of Memecylon capifeUatum (fig. 33&), the 

 same material as possessed the Aschersonia (p. 37). 



The two fungi were irregularly distributed on the scales 

 on the lower surface of the leaves throughout the bush. 

 Some leaves possessed both kinds of stromata, while others 

 might only have one sort. 



2. On the lower surface of leaves of Jasminum 

 Sambac. 



In this case no Aschersonia, only brown pustules were 

 present on the material received. The pustules are similar 

 to the ones described by Webber, being rich brown in colour 

 with a white membranous border from which hyphae 

 radiate out to some extent over the leaf surface. 



3. On the lower surface of the leaf of Calophyllum 

 Walkeri. 



The brown pustules were not proved to be on scale-insects, 

 but the supposition is likely. 



Intermingled with the brightly coloured Aschersonia 

 stromata on the leaf of Flemingia strobilifera (p. 37 ) were 

 other brown ones. Many of these latter were evidently old 

 or arrested Aschersonia stromata, as sections of them revealed 

 closed pycnidia. Others again were flatter, more nearly 

 resembling Webber's brown fungus, thus suggesting the 

 possibility of all these sterile pustules being really connected 

 with Aschersonia. The two fungi often appear in associa- 

 tion on the same scale and even on the same leaf. Webber 

 mentions that A.aleyrodis was present on those orange bushes 

 containing also the "brown mealy wing fungus." In the 

 Ceylon specimen on Memecylon the two were intimately 

 associated. Atmospheric conditions such as dryness may 

 so influence the development of the Aschersonia as to induce 

 it to assume a sterile resting form. This, when conditions 

 are again favourable, might send out infecting hyphae over 

 the leaf surface. Webber's account of how this brown 

 fungus develops and spreads hardly favours such a view. 

 However, its close association with Aschersonia is a point to 



