UME XXII NUMBER 6 
BTANICAL: GAZETTE 
DECEMBER 1896 
A RUST AND LEAF CASTING OF PINE LEAVES. 
BEVERLY T: GALLOWAY: 
(WITH PLATES XXII AND XXIII) 
INTRODUCTION. 
SOMETHING over five years ago the writer briefly described a 
leosporium,? or rust, occurring on the leaves of Pinus Virgint- 
the scrub or Jersey pine? The rust was found in consid- 
bits and its effects on the host, it was made the subject of 
2 or less extended studies during the spring, summer, and 
nof 1891. In 1892 some additional investigations were 
this work being mainly a comparative study of the anat- 
and physiology of healthy and diseased trees. In 1893 and 
some of the previous work was repeated and additional 
ts in regard to the life history of the fungus and its effects 
the host were brought out. Last year (1895) further studies 
made. In these studies special attention was given to the 
ding or casting of the leaves, a phenomenon which is known 
follow the attacks of a number of fungi, and which it was 
ought of interest, in this case at least, to explain if possible. 
mine Ystematic position of this fungus may be questioned, but as this is — 
hor importance in the present paper it may be allowed to stand provisionally 
Coleosporiums. 
a pine leaf rust, Jour. Mycology 7: 44. 1891. 
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