BY D. McALPINE. 227 



by many as the " shot-hole " fungus j!?«r excellence, as if it were 

 the only fungus capable of producing such effects, and whenever 

 a shot-hole is met with in the leaves of stone fruit trees it is 

 usually attributed without any investigation to P. circumscissa. 

 A nd yet, although I have spent over ten years in investigating 

 the diseases of plants in Australia and examined over a thousand 

 leaves of stone-fruit trees from various parts of Australia and 

 New Zealand, submitting them to the most searching examination, 

 wherever a *'shot-hole" wasdue to a Phyllosficta, I have invari- 

 ably found it to be P. prunicola, or very occasionally P. 'perucce. 

 P. circumscissa was determined by Cooke in 1883 from leaves of 

 Apricot and Cherry sent from South Australia by the late Frazer 

 S. Crawford, and the following brief description was given of it 

 in Grevillea (Vol. xi., p. 150, June, 1883) : — " On both surfaces. 

 Spots orbicular, rufous-brown, at length falling out and leading 

 round holes. Perithecia few, minute, innate. Sporules elliptic. 

 8x2 ^." 



Both P. prunicola and P. persicce have been met with on 

 Apricot-leaves from South Australia, and P. circumscissa ap- 

 proaches so closely to the latter constituted by Saccardo in 1879 

 from Peach-leaves, and the spores are sometimes so similar that 

 it is highly j^robable they both represent the same fungus on 

 different host-plants, and so I have included the shot-hole fungus 

 of Cooke under the previously determined one of Saccardo. It 

 is presumed that the spores were hyaline, and hence I have 

 referred it rather to P. persiccE than to P. prunicola, in which 

 the spores are clear olive. 



P. persicce has been found both in Victoria and South Aus- 

 tralia on Apricot and Plum-leaves as well as on Peach-leaves. 

 It is of comparatively rare occurrence, and does not seem at 

 present of great economic importance,, 



Puccinia pruni. — This fungus has not hitherto been associated 

 with " shot-hole," and since this is the first record of it, the 

 subject may be briefly referred to. Some Almond-leaves sent 

 from South Australia were badly riddled with " shot-hole," and 

 also severely affected with Puccinia pruni. After careful 



