BY D. Mc ALPINE. 449 



recognised by the dark broAvn almost black appearance in contrast 

 to the rusty-l)rown pustules containing uredosj^ores alone. 



Nectarine. — On the leaves of a nectarine (Dante) from the 

 Royal Horticultural Gardens teleutospores were found, agreeing 

 closely with those on peach (fig. 6) as well as on the variety called 

 Darwin. 



Flam. — On plum leaves from the Gardens, only comparatively 

 few uredospores were found, while teleutospores were plentiful 

 (%-V). 



A specimen of plum leaf with rust upon it, plucked on May 

 19th, was sent from Hobart by Mr. Rodway, and l^oth uredospores 

 and teleutospores were found upon it (fig. 8). 



Apricot. — The rust on the apricot leaf is still comparatively 

 rare in Victoria. I am indebted for specimens to an indefatigable 

 worker, Mr. G. H. Robinson, of Ardmona, who sent them as far 

 back as June 23rd, 1(S9-1-. The teleutospores were not numerous 

 among the uredosjDores, and one is shown in tig. 9. 



In Mr. Tepper's specimen on the fruit forwarded earh^ in 

 January, only uredospores were found ('fig. 10). The skin of the 

 apricot had small yellowish to brownish iDlotches over it, and the 

 uredospores are seen to be of the normal type, but sometimes 

 rather elongated, even attaining a length of 44 /i. On the other 

 ha,nd, the}^ are sometimes excessively shortened, and the extremes 

 of length, 26 to 44 /x, were met with in this one specimen. They 

 are, however, in relatively small quantit}^ and I am inclined to 

 think that the close-set, downy hairs interfered with their proper 

 development. When a microscopic section of the skin is made, 

 onh^ a few uredospores are seen with difficulty among the hairs, 

 attached to the matrix. 



Almond. — As in the case of the apricot, the fungus is also very 

 scarce as yet on the almond in Victoria, On June 17th of last 

 year, Mr. Robinson found at Ardmona only a few leaves, and each 

 with one pustule containing uredosjDores which are shown in fig. 11. 



I had also specimens from Xetherby in December, 1893, and 

 the undersurface of the leaves had quite a rusty appearance, owing 



