1886. | BOTANICAL GAZETTE. 297 
culiar cup-s i isti 
r cup-shaped membrane, is very characteristic of this bacillus, 
ncpabme = equ to the observer as the stellate growth of 
liquid aeeie e Ne For if another microbe be present, the 
a ie ¢ ne . land the membrane is modified. There are 
ei tae ia of interest in connection with the membrane 
Shes: ti i Sp pata later, which I forbear to mention here, as 
oe or diagnostic purposes is limited by their tardy ap- 
such cases cultures in fluids are frequently of great service. In 
Black Rot, Physalospora Bidwellii 
Sace. 
F. LAMSON SCRIB‘ER. 
Botanical characters of the 
(WITH PLATE IX.) 
_ The external characters of black rot of the grape are determined 
by the growth of the mycelium of Phoma uvicola B. & C., or, if 
we assume the mature form to be correctly determined, Physalo- 
* Medical News, 1886, Oct. 18. 
* Read before Botanical Club, A. A. A.&., Buffalo meeting, 1886. 
