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106 The Botanical Gazette. [March, 
About ten days after the inoculation of the Andromeda 
plants with the spores of E. Andromedz, there were noticed 
on the leaves faint discolorations, at first yellowish and later 
turning to pink. About five days later, the spots, which had 
considerably enlarged, began to show unmistakable signs a 
thickening, forming the familiar concavities in the leaves see 
in other Exobasidia. In external form, and also in the mat 
ter of basidia and spores which will be discussed later, this 
distortion resembled precisely the leaf form on Andromet: 
ligustrina which had been collected previously. This indi | 
cates the fact that the Exobasidium Andromede which pt 
duces the large distortions of the young buds is identical with 
the leaf form found later in the summer. 
The transfers on Gaylussaccia from the E. Andromedé 
gave no definite results, perhaps owing to a number of mis 
haps to which these specimens were unfortunately subjected 
The infections made from E. Vaccinii now to be spokel 
of were, however, especially instructive. Those on Gaylus 
saccia developed in the way one would expect, the distortiot 
on the leaf being of the kind collected out of doors near tit 
end of the season. The most critical and interesting culturts 
however, were those of this species on the Andromeda. Tit 
Jeal 
left until now because of their great similarity. In their 8° 
