BOTANICAL GAZETTE 
MARCH, 1896. 
Contributions from the Cryptogamic Laboratory of 
Harvard University. XXXII. 
Notes on cultures of Exobasidium Andromedz and of 
Exobasidium Vaccinii. 
HERBERT MAULE RICHARDS. 
WITH PLATE VI, 
Among the various species of Exobasidium there has been 
one described on Andromeda ligustrina characterized mainly 
by the large hollow distortions which it produces on its host. 
Peck, who is the authority for this species, has given the orig- 
inal description of it in one of his reports! and the few other 
» which some consider a variety of &. Vaccinit 
(Fuckel) Woronin, Z. Andromed@ Peck has never been ques- 
a as a distinct species and this mainly on the character of 
the distortion it produces. Itis true that the measurements of 
the spores as given by Peck are much larger than those of any 
Hi Exobasidium but in all the specimens examined by the 
— including those in exsiccatze, no such large spores 
were found. 
fune order to determine thing bout the nature of this 
a and to compare it with other species of the genus an in- 
wii was begun at the suggestion of Professor F arlow 
availabl intention of examining all of the species of Exobasidium 
Plete ‘hi, Since it will be impossible for the writer to com- 
and ex 'S work now, and since the results of the observations 
forty Periments already completed are definite, though un- 
igh wately Somewhat incomplete, it has seemed best to pub- 
» at the present time, what has been done. 
1 
Report State Botanist N. Y, 26: 73. 
9-Vol. XXI.—_No. 3. 
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