66 BULLETIN 380, U. S. DEPARTMENT OF AGRICULTURE. 
ENDOTHIA PARASITICA ON HOSTS OTHER THAN CASTANEA. 
The first collection of Endothia parasitica on a host other than 
Castanea of which the writers have any knowledge is that made by 
J. Franklin Collins at Martic Forge, Pa., June 30, 1909. As an- 
nounced by Dr. Metcalf at the Boston (December, 1909) meeting 
of the American Phytopathological Society, the specimen consisted 
of a small dead branch of Quercus velutina with several spore 
tendrils typical of Z. parasitica. This material, which consisted of 
a terminal branch with leaves still retained, was at once sent to the 
laboratory at Washington, and cultures obtained from it were sub- 
sequently used in making numerous inoculations on Castanea dentata 
on Long Island, N. Y., in July, 1909. On November 17 of the same 
year, Metcalf reported that the inoculations were entirely successful 
and had produced typical lesions, thus establishing without question 
the identity of the fungus. 
Fulton (37, p. 53) reports £. parasitica on the dead bark of Quer- 
cus alba and Quercus velutina, but found no evidence that the fungus 
produces in any sense a disease of such trees. Clinton (18, p. 428) 
mentions cultures from three different species of Quercus and (p. 
376) reports specimens on Quercus alba, Q. rubra, and Q. velutina. 
_ Anderson and Babcock, as quoted by Anderson and Rankin (6, p. 
564), found L'ndothia parasitica on Quercus velutina, Q. alba, Q. 
prinus, Rhus typhina, Acer rubrum, and Carya ovata, but it seemed 
parasitic only on Quercus alba. They made inoculations with mate- 
rials isolated from Castanea on Quercus prinus, Q. velutina, Q. alba, 
Q. coccinea, Rhus typhina, Acer rubrum, Liriodendron tulipifera, and 
Carya ovata. Two trees of Rhus were girdled and killed by the 
growth of the fungus. On Quercus alba the fungus seemed slightly 
parasitic, but none of the trees were killed. The fungus grew and 
produced spore horns on the wounded tissue near the point of inocu- 
lation on all the hosts except Acer and Liriodendron. 
Rankin (62, p. 238) also made inoculations with Endothia para- 
sitica from Castanea on Quercus prinus, Q. rubra, Q. alba, and Q. 
coccinea. He found that the mycelium advanced into the living 
tissues for a short distance in a few cases, but that in no case were 
typical cankers formed. Pycnidia were produced- abundantly on the 
injured tissues of all the hosts. 
During the course of this work only four specimens of E'ndothia 
parasitica on hosts other than Castanea have come to the writers. 
One was on chestnut oak (Quercus prinus) collected by F. W. Besley, 
at Towson, Md., December 26, 1911; one from Quercus velutina, at 
Germantown, Pa., as well as one from white oak (Quercus alba), at 
Kennett Square, Pa., were collected by S. B. Detwiler; and one 
from dead maple, Acer sp., at Florence, Mass., by Roy G. Pierce. 
