20 
Pleurotus ostreatus Jacq., the oyster mushroom, was collected 
on the sugar maple. In this case also, the fruiting bodies were 
associated with large wounds, the result of the breaking off of 
branches. 
A species of Stereum was collected on the English oak and also 
on the black birch. 
A number of serious troubles were observed to which, at pres- 
ent, no cause can be assigned. The foliage of the beech trees 
showed a large proportion of the leaves with conspicuous dead 
and dying areas. The same is true of the foliage of the sugar 
maples and the varnish tree. While collections of these leaves 
Were made throughout the season, no specific fungus was found 
which might be responsible for the characteristic effects. In 
fact, it is probable that these foliage injuries were due to some 
environmental condition. It remains to be determined just what 
condition is connected with these conspicuous foliage injuries. 
Many of the pines, particularly the white pine, showed a large 
number of dead needles as well as dead and dying branches. In 
general, the Austrian pine was quite free from any stich symp- 
toms. In the Garden, however, one or two trees were located 
which showed a conspicuous dying of many of the branches. 
Again, no specific fungi were found which might be regarded as 
the cause of these troubles. 
The condition of the trees and shrubs is, in general, most credi- 
table to the Park administration; but there are many important 
problems that can and should be solved by continued study and 
attention by an experienced plant pathologist. More detailed 
suggestions will be possible after the second season’s work next 
summer. Respectfully submitted, 
3 EORGE M. REEp, 
Resident Investigator. 
NOTES 
The large plan of the systematic section of the Brooklyn Bo- 
tanic Garden, loaned to the Missouri Botanical Garden for an ex- 
hibition of landscape architecture during October, 1916 (Brook- 
lyn Botanic Garden Recorp, Oct., 1916), has been shipped to 
