448 NOTES ON UROMYCES AMYGDALI, COOKE, 



and it looks so rounded at the point of junction with tlie upper 

 cell that one might readily mistake it for an independent, uni- 

 cellular, stalked spore. 



It would appear, however, that on the continent of Europe the 

 teleutospore form is the prevailing one, for De Bary'' speaks of 

 Puccinia pruui l^elonging to the Micropuccinia, as teleutospores 

 only are known. 



No doul^t the absence of teleutospores helped to mislead Dr. 

 Cooke in his determination, and such a case emj^hasises the 

 necessity for continuous observation of many of these fungi on 

 the spot, in order to determine accurately their affinities, for at 

 certain seasons only the uredospores are present, as in this 

 instance, or it may be that the teleutospores only are present as 

 in the case of Puccinia burchardict determined by Dr. Saccardo 

 where I had to supplement the description with that of the 

 uredospores. f 



A few brief notes may now be given on each of the Victorian 

 hosts mentioned, in order to show that it is the same fungus 

 disease which affects them all. Puccinia pruni, Pers., has to be 

 recorded as new to Victoria for the apricot. 



Peach. — Leaf-rust on the peach has been very prevalent this 

 season, and yet the teleutospores are comparatively rare in the 

 specimens which I have examined even in the. month of July. A 

 number of leaves were examined from peach trees in my own 

 garden, but no teleutospores were found, only uredospores (fig. 6). 

 In one instance the uredospore had germinated on the leaf still 

 attached to the tree as shown in fig. 5. On some peach leaves 

 from the Royal Horticultural Gardens, teleutosj)ores were found, 

 but not in great quantity, along with uredospores. I have just 

 examined (July 3rd) some leaves from young trees of Bid well's 

 Late, Improved China Flat, Red Ceylon, <kc., and while there is 

 abundance of uredospores there are no teleutospores The pustules 

 containing teleutospores and uredospores mixed may be readily 



* Comp. Morpb. and Biology of the Fungi, p. 285 (1887). 

 t Vict. Nat. X. 192 (1894). 



