1896, ] Cultures of Exobasidia. 107 
eral form all of these distortions resulting from the growth of 
artificial inoculations closely resemble the form of Exobasid- 
ium Vaccinii on Vaccinium Vitis-Idaea described by Woro- 
nin,’* and the forms collected by the writer on the leaves of 
Andromeda and Gaylussaccia (figs. 17-20). Microscopically 
considered the character of the distortion on the Andromeda, 
from the infections of both the E. Andromede and the E. 
Vaccinii, is so precisely similar to that already described as 
collected in the field on the leaves of Andromeda that a de- 
scription of them would be a mere repetition of the facts 
therein given. The mycelium, basidia, and spores likewise 
Present no peculiarities which can separate them from those 
of E. Vaccinii. The spores measure 12-16 x 3m and have the 
characteristic shape and appearance of those of the last named 
fungus (figs. 13-16). 
Summing up the case, it is something like this. As has 
been shown above, aside from the form of the distortion, Ex- 
obasidium Vaccinii (Fuckel) Woronin and £. Andromede 
Peck cannot well be distinguished. The former can produce 
the same form of distortion on both Gaylussaccia and An- 
dromeda and the latter has been made to produce a similar 
um are one and the same and the form producing 
atge bag-like distortions on Andromeda should be considered 
aform of Exobasidium Vaccinii (Fuckel) Woronin. 
It must be admitted that, at the time of writing, identity 
has not been i 
cal form of E. Andromedz with inoculations of spores of E. 
Lo8s would have to be made. It ought to be perfectly easy 
of i ver to grow distortions on Gaylussaccia from specimens 
ex « So-called E. Andromedz and it was the failure of these 
Periments which is most to be regretted. 
basis s ifference in size and structure of the distortions as a 
It is ¢ gaged distinction does not seem to have much weight. 
the oh €nt that the larger distortions are produced only in 
Y Part of the year when the fungus attacks the young 
wsitive tissue. In the forms ordinarily acknowledged 
©n Rhododendron viscosum formerly known as E. 
» and also on Gaylussaccia resinosa in the earliest 
nr y © alae 
» C, 
*P.5. pf zr. Jigs. 1-6, 
