CORNELL UNIVERSITY EXPERIMENT STATION BULLETINS. 317 



analogous to the dark weft of mycelium developed over the bean stems 

 in the culture. In this respect the fungus resembles the Glocosporium 

 of ripe rot of apples. 



In the report of the mycologist, Dept. Agr., 1887, p. 848, there is 

 noted what seemed to be an immature pycnidial stage of Glocospornim 

 frudigenum. On apples, affected with Glocosporium fructigenum, which 

 were kept until midwinter, Miss Southworth notes one conceptacle in 

 connection with the stroma containing two asci and undeveloped spores, 

 but the culture was so badly contaminated with other forms that it 

 was thrown away. The culture being contaminated there might be 

 some doubt oi its genetic connection with the Gl(r,osporium, hvd,^ all 

 this strengthens the possibility that several authracnoses in the future 

 will be known as conidial stages of some more highly organized form. 



The result of these cultures is to impress one with the close relation- 

 ship of this Glocosporium on the privet to the Glocosporium frudigenum 

 on apples. If it were the same species, the cultivation of the privet 

 would then bear a new and important relation, perhaps, to the spread 

 and propagation of the ripe rot of apples. There are points of differ- 

 ence, however, so far as the two species are at present known, sufficient 

 to characterize it as a hitherto undescribed species, and I propose for 

 it the name Glocosporium dngulcUum, or the girdling anfhrncnose. 

 • Goclosporium dngulatum ns. p. Affected areas light brown, either 

 oblong and on one side of the stem or later completely girdling it. Acer\nili 

 100 to 150 in diameter, rupturing the epidermis, in age black from the 

 dark stroma lying in the base or extending irregularly up the sides fre- 

 quently forming a pseudo-pycnidium. Basidia numerous, crowded, simple, 

 hyaline or when very old perhaps faintly fuliginous. Spores oblong, or 

 elliptical, straight or little curyed, usually pointed at the base. From 

 pustules on thestem they measure 10 — 20x5—7; in artificial cultures they 

 are frequently much larger, but when crowded in the media, or when the 

 nutrient substances are nearly exhausted, they may be considerably 

 smaller — on stems of Ligustrum vulgare. 



This is quite distinct fr<jm Glocosporium ligustrinum Sacc. 



NOTE ON THE CERCOSPORA OF CELERY BLIGHT. 



Late in September, specimens of celery affected by " celery blight," sent 

 by H. C. TowNSEND of Wappinger's Falls, Dutchess county, were commu- 

 nicated to me by Mr. Turner of the New York weather service. The disease 

 was determined as due to the fungus Cercospora Apii Fres. A short note 

 on the disease was then published in the Crop Bulletin of the New York 

 weather service, for the week ending Sept. 24, 1892. It has long been 

 known in Europe and has been recorded several times in various parts of 

 the United States during the past several years. It sometimes occasions 

 quite serious injury to the celery crop, in some cases materially lessening 

 the product and also rendering the diseased plants less desirable for 

 market. 



Halsted of the New Jersey experiment station shows that the disease can 

 be held in check by the use of the standard carbonate of copper and 

 ammonia mixture applied with a knapsack sprayer. 



The object of this note is chiefly to call attention to some confusion 

 which exists concerning certain morphological characters of the fungus. 



