88 TEANSACTIONS OF THE ILLINOIS 



4th, That of Septosporium Fuckelii, Thumen. This fungus 

 was found infesting the leaves of Vitis CaU/ornica, growing in the 

 caQons near Orange, California. On some of the vines the foliage 

 was almost entirely destroyed by its attacks. It is a fungus similar, 

 in its habits and action on the host, to Cercospora vitis, Sacc, and 

 its presence need not be regarded with alarm. It was not seen on 

 the cultivated grapes, although it appears to be not infrequent in 

 the vineyards of Eurojoe. The appearance of the upper surface of 

 the leaves attacked, bears a striking resemblance to those infested 

 with mildew {Peronospora)^ but the black spots visible on the under 

 surface at once distinguish it from that fungus. 



5th, That it is very doubtful if Peronsopora viticola has yet been 

 introduced into California. The districts supposed to be infested 

 with this parasite from the reports received by the Department of 

 Agriculture, were found, upon investigation, to be entirely free from 

 this disease. 



6th. That of Uromijces heke on the cultivated beets in Southern 

 California. So far as can be ascertained from available authorities, 

 this is the first discovery of this disease in the United States. It is 

 common in Europe, where it occasions some damage by diminishing 

 the sugar product of the infested plants. It is one of the species 

 whose life history has been fully traced, affording us the knowledge 

 which will enable us to control it, should it become troublesome to 

 the beet sugar interests. 



7th. That the stylospores of Physalospora BidivelUi may remain 

 intact in the berries, through the winter, and will germinate in the 

 spring when placed in suitable conditions. From this it appears 

 that the ascospores are not essential to the perpetuation of the fun- 

 gus. The expulsion of the ascospores from their perithecia and their 

 subsequent germination, as seen in the laboratory of the department, 

 has already been recorded, 



8th. That PholJosticta lahruscce and Phoma iivicola are identical, 

 an important fact in considering the question of treatment. 



9th. That of finding the mature form of Ramularia Tulasnei^ 

 or S])haerella Fragarice. The perithecia, with their fully developed 

 asci and ascospores were found on specimens communicated by Mr. 

 Frank Earl, ia the winter of 1886. Later, the fungus was found in 

 all its stages on one and the same leaf. Microscopical preparations 

 have been made which exhibit all the forms in a single section. 



10th. That of finding early in December, the living mycelium 

 of Roestelia penicellata in the tissues of apple twigs, and its evident 

 growth from the latter into prematurely forming leaves, for upon 

 the latter, which were scarcely more than an inch in length, well 

 developed spermagonia were noted Dec. 7th. The shoot bearing 

 these leaves had, at this date, been kept partly immersed in water in 

 a warm room for one week. The twigs in question were from a tree 

 which, for a succession of years, has had its foliage badly infested 



