378 
characters with the different physiological effect produced on the 
host seperate it from that species. 
EXOASCUS VARIUS N. sp. 
As the type of this species I have used the Evoascus on the 
leaves of Prunus serotina L., which I have collected very abun- 
dantly in Alabama. It is usually referred to F. deformans. It 
appears to me to be clearly distinct from that species, and to ap 
proach nearer in the relative proportion of the stalk-cells and ascl 
to the species on the fruit of P. serotina, viz. E. Farlowt Sadeb. ° 
The asci are 20-27 “long by 8-10 in diameter, and the stalk-cells 
12-174 high by 8-10 # in diameter. These measurements are 
taken from specimens which represent the longest stalk-cells. 
There are great variations and frequently the stalk-cells are only 
* one-fourth as long as the entire fruit body, instead of one-third as 
‘long. The asci occur on both sides of the leaves. 
The fungus quite frequently deforms the same shoots on which 
the affected leaves are borne, but there is no tendency, So far as I 
have observed, to form “Witches’ Brooms.” Specimens-of this were 
distributed by Seymour and Earle, Economic Fungi, no. 128, as 
Taphrina deformans (B.) Tul. What I take to be the same was 
distributed in Ellis’ N. A. F. no. 2285 b. as Zaphrina Prum 
(Fuckel), from Missouri. I have specimens from Smyrna, Del., 
communicated by Ellis, and it occurs in other places. 
Rather scanty specimens on the leaves of Prunus demissa Walp. 
from Ute Pass, Colorado, ex herb. Trelease, communicated by 
Prof. Pammel, I have referred to this species with some doubt. 
ad 
EXOASCUS CECIDOMOPHILUS Nn. sp. 
This is another very interesting species which I collected ee : 
Etna, N. Y., July 6, 1894, and other places. It occurs 0D at ‘ 
formed by the larve of some cecidomid on the fruit of - . ve 
Virginiana L. The greater part of the hypertrophy is mine e a 
by the larve of the cecidomid. The fungus is mostly sup oe 
the mycelium being scanty and not penetrating very deep. de 
deformed fruits are two to four times longer than the normal a 
and slightly broader. The ends are rounded, the middle 4 li oe 
inflated, a slight strong constriction near the base which be ang 2 
to flare out, and in doing so, gradually appears to break — 
