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Iu “Ruddy-brown scab” of tbe Lemon (Ovularia citri),t be 
fruit is sometimes rough all over with hard excrescences, and tbe 
warts are covered with a whitish coat of mould belonging to the 
fungus. 
There is a “Brownish-black scab” on Oranges, Lemons, and 
Citrons, caused by a very commonly distributed fungus (Phoma 
ovinivora ), which also attacks branches and leaves, producing a 
withering and decay at. the tip. The “scabs” are at first of a 
dirty-grey colour, becoming brow r n or even dingy black, usually 
appearing on one side of tbe fruit, and lit tle patches are gradually 
being detached in thin flakes (Plate VIII.). 
Verrucosis or scab so prevalent in Florida, in which both the 
leaf and fruit of Oranges and Lemons are attacked, has not 
been detected in Australia. It forms excrescences up to two- 
fifths of an inch, the fruit is covered with lumps of an irregular 
pyramidal shape, and the wart is coated with a delicate fungus 
(Cladosporium spj), at first grey, then dusky, at last black. 
