354 CONNECTICUT EXPERIMENT STATION REPORT, IQI2. 
PinE-SWEET FERN Rust, Peridermium pyriforme Pk. We 
have already reported this fungus (which has its II and III 
stages on sweet fern, known as Cronartium Comptoniae Arth.) 
on Pinus sylvestris, P. rigida, P. austriaca, and P. maritima, from 
the Station forestry plantation at Rainbow. In May, 1911, 
Forester Spring found it there on P. ponderosa, and in May, 
1912, Forester Filley and the writer found it on this host and 
P. montana, both hosts new, at least to this state. This makes 
six different species of pine on which we have now found this 
Peridermium. 
Stem CanKER, ? Phoma sp. Plate XIXa. Several times we 
have had young. specimens of white pine brought to us by forest- 
ers showing the base encircled by a dead sunken area, as shown 
in the illustration. Occasionally we have found the Phoma fruit- 
ing slightly on these dead areas, and at least in one case, we 
obtained this fungus in cultures from the specimens. We are 
not sure as yet whether this fungus is responsible for the trouble 
or whether it merely follows winter and drought injury. Some 
of the specimens have the aspect of being quite parasitic. 
We have seen no notice of a Phoma canker of white pine in 
this country, but Tubeuf, in his Diseases of Plants, mentions 
two species of Phoma in Europe that attack the branches of 
various coniferous plants. One of these is Phoma pithya Sacc., 
and Saccardo, in his Host Index, gives the white pine as one 
of the hosts of this fungus. On the leaves of certain species 
of pine, including Pinus montana, we have seen Phoma acicola 
(Lev.) Sacc. It is a question with this species also whether it is 
parasitic or is merely following other injury where the leaves 
have been killed part way from the apex inward. 
QUINCE, Cydonia sps. 
Fruit Spot, Cylindrosporium Pomi Brooks. In our 1909-10 
Report, page 723, we described the appearance of this fungus 
on the apple, and also reported finding it rarely on the common 
quince, Cydonia vulgaris. In October, 1912, the writer also 
found it on fruit of the Japan quince, Cydonia japonica. While 
the fruit of this was abundantly covered with small purplish 
discolorations, none of these showed the fruiting stage of the 
fungus. Cultures from the tissue, however, showed that they 
