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1921] MILES—LEAF SPOTS OF ELM 187 
Gnomonia ulmea, TRELEASE also reported the presence on the 
same leaf of Septoria Ulmi Fr., a synonym of Phleospora Ulmi 
(Fr.) Wallr., which at that time was thought to be the conidial 
stage of Phyllachora Ulmi, but I was unable to find any trace of 
it on the specimen examined. In material sent from the Univer- 
sity of Geneva, Switzerland, I found another specimen, evidently 
from this same collection by TRELEASE and labeled in the same 
manner. It also was Gnomonia ulmea. 
The second reference to the occurrence of Systremma Ulmi in 
this country is by Eriis and EverHart (16), who stated that a 
specimen of Dothidella Ulmi (Duv.) Wint., which name is merely 
another of the numerous synonyms under which the European 
organism is known, was sent to SCHWEINITz by TorREY from 
New York. They added that they could not find any other 
teferences to this species being found in this country, and that 
they have seen no American specimens. I find in SAccARDO’s 
(33) Sylloge Fungorum in the description of Sphaeria apertiuscula 
Schw. on Ulmus fulva, collected by Torrey in New York, the 
statement added that the upper side of the leaf is covered with 
Dothidea Ulmi. This is evidently the specimen to which ELtis 
and EverHART were referring, as both the names used are synonyms 
of Systremma Ulmi. I have not seen this specimen, and there is 
a possibility that it is really a specimen of the European leaf spot, 
but it is hardly likely, especially since it has never been collected 
in this country since, nor has it ever been reported as occurring 
on Ulmus fulva at any other time, either previous to that collection 
or Jater. 
I found in specimens sent from the Royal Botanical Gardens 
at Kew, England, among those labeled as belonging to the her- 
barium of BERKELEY, three specimens purporting to have been 
collected by DrumMonp in arctic America. These were un- 
doubtedly specimens of Systremma Ulmi, and, although the host 
was not named, the leaves possessed the somewhat three-lobed 
character peculiar to the Scotch elm, U. glabra. This is not native 
to America, and one would hardly expect to encounter an intro- 
duced species in the arctic regions. For these reasons I believe 
that these three specimens represent some European collection 
