350 CONNECTICUT EXPERIMENT STATION REPORT, 1912. 
found rather conspicuously in the fall on the variegated variety 
of the Japanese hop, cultivated for ornament in the writer’s 
yard, and caused premature death of the foliage. While this 
mildew has been responsible for considerable damage in the hop 
districts-of Europe in times past, it has only recently been com- 
plained of in the hop districts of New York State. Blodgett 
reports that dusting the plants with sulphur is a rather satis- 
factory method of controlling the trouble there. 
JUNIPER, CHINESE, Juniperus chinensis. 
Rust, Gymnosporangium japonicum Syd. Plate XVIIId. 
The last of March, 1911, Mr. Walden, while inspecting importa- 
tions from Japan at the Elm City Nursery, found on the above 
host, specially on the form known as compacta, an unusual rust 
on both stems and leaves. On a seedling of this same species, 
called J. virginalis, this same rust was also found, but only on 
the leaves. Altogether, 55 plants were found that had the out- 
breaks on the stems, and these were all destroyed. Those show-. 
ing the rust only on the leaves were ordered planted in an 
isolated place, and an examination of them the next spring 
revealed no signs of the fungus. A few days after Mr. Walden 
found these infected specimens, he discovered others in an 
importation, also from Japan, of the Stephen Hoyt’s Sons 
Nursery Company. In this case 49 plants showing the rust on 
the stems were destroyed. The writer determined both these col- 
lections to be the telial, or III, stage of Gymnosporangium 
japonicum Syd., which until this time had not been reported 
in America. : 
An examination of Plate XVIII c-d shows that this rust is 
quite different from our common red cedar rust, though appar- 
ently it is not so different from some of the other species 
reported from this country, especially G. effusum. This fungus 
has been well described by Shirai in Zeitschr. fiir Pflanzenk. 
10, pp. I-5, and he determined that the I stage is Restelia 
koreansis, which is more or less injurious to the foliage of pears; 
and can also infect apples and quinces, in Japan. 
_ The gelatinous swellings of the fungus evidently developed 
on the infected trees in transit, though they appear in Japan 
a little earlier than in this country. These are the fruiting 
bodies, or sori, and are 3-5 mm. high, more or less flattened 
