577 
in the Southern States, the fruit is frequently distorted by a fungus 
which I take to be of the same species as the one on the buds. 
All the essential characters are the same, but the asci and stalk- 
cells seem to be on the average a little longer, probably due to the 
greater amount of nourishment which the fruit provides. In the 
specimens examined the entire fruit is not affected as in the case 
of £. Prunt and related species, but only one side, sometimes only 
a small portion of it. Only one side then is hypertrophied and may 
“ppear as a large wart, or the fruit may be curved and variously 
twisted. Rarely does it form a « pocket.” In order to avoid 
Possible confusion, I have thought it well to distinguish this fruti- 
colous form as a variety. 
The fruits of cultivated varieties of ?. Americana, in Iowa, ap- 
pear to be somewhat similarly distorted, and with the examination 
I have made, they, as well as the asci, etc., seem to be more nearly 
related to this form than to £. communis Sadebeck, but I should 
Prefer to reserve a decision until further observation is at hand as 
to the relation of these fruits to the deformed buds of ?. Americana. 
_Exoascus ruizipes n. sp. 
This interesting species I have found upon the Japan plum, 
Prunus triflora Roxburgh. I collected it at Auburn, Ala., in May, 
1892. It deforms the buds and fruit very much as £. mirabilis 
Atkinson, does those of P. angustifolia, but the structure of the 
fungus js quite different. It is more closely related to the £. 
longipes Atkinson on the fruit of 2. Americana Marshall. From 
this it differs in the still longer stalk-cells which intrude farther 
between the cells of the epidermis, and especially in the possession 
of numerous rhizoids which grow not‘only from the stalk-cells, but 
also from the lower portion of the asci. The form of the plant on 
the fruit I have used as the type of the species. Here the asci 
are 30-40“ long by 8-10 in diameter. The stalk-cells are 25-40 
long and 3-5 win diameter, tapering much below. In very thin 
Sections the lower part of the hymenium, from the numerous 
thizoids which branch off at all depths, appears as a cellular tissue 
from which the asci arise. 
The form on the bud is similar, but the rhizoids are not as long 
nor as numerous, but still much more so than in E. longipes. These 
