188 
Transactions of the Royal Society of South Africa. 
Ovulariopsis erysiphoides, Pat. and Har., and Ovulariopsis moricola, Delacroix^ 
as conidial stages of the almost cosmopolitan Phyllactinia corylea (Pers.)^ 
Karst. The measurements of the conidia of the above fungi are given 
below : 
Ovulariopsis erisyphoides, 48-55 x 13-17 (teste Salmon); 60-70 x 12 fx 
(teste Patouillard and Hariot). 
Ovulariopsis moricola, 48-70 x 15-23 /u (teste Salmon). 
Phyllactinia corylea, 45-64 x 13-16 ju (teste Salmon). 
Fig 1. 
From a large number of measurements we find the conidia (Fig. 1) of 
Ovulariopsis papayae to vary considerably, and the extremes are 60-90 x 
14-23 IX. The majority are 72 x 14 /i. They hence exceed in length the 
conidia of the fungi mentioned above. We have not tried inoculating our 
fungus into mulberry leaves, from which host Ovulariopsis moricola was 
named, but have not observed a similar fungus on mulberry leaves. On 
several occasions we found mulberry trees growing in close proximity to 
infected pawpaw plants, but not in a single instance had the fungus spread 
