Oct. 1902] Notes from Mycological Literature 
161 
pores are multicellular of a dark brown color, their cell walls 
being more evident and the constrictions between the cells more 
distinct than in the example figured by Ellis * in plate X, figure 
3, of his North American Pyrenomycetes. The prodigious for¬ 
mation of sporidia in the spermagonia accounts for the pheno¬ 
menal spread of the fungus during the early autumn days. The 
presence of the mycelium on the surface of the leaves does no 
apparent injury to the leaf substance. The fungus is a sapro¬ 
phyte and feeds superficially on the mixed honey dew and insect 
substance. When fully matured, the whole mass can be removed 
from the beech without the slightest injury to the upper leaf epi¬ 
dermis. However, the formation of starch in the leaf cells seems 
to be checked, Scorias spongiosa Schw., of a black color, acts as 
an almost perfect screen, shutting off the sun’s rays, and thus 
influencing in a substantial manner the starch production of the 
beech host, so that, if it were not for supplies derived from other 
parts of the tree fully exposed to the sunlight considerable dam¬ 
age might be done to the shaded leaves. We have, therefore, in 
the saprophytic association here described another interesting 
example of the inter-dependence of organisms. 
University of Pennsylvania. 
* Ellis & Everhart, N. A. Pyrenomycetes, 55, pi. 10. 1892. 
NOTES FROM MYCOLOGICAL LITERATURE. II. 
w. a. kellerman: 
An interesting study of Cladochytrium alismatis, found 
for the first time in America at Glacialis pond, Cambridge, Mass., 
is given by G. P. Clinton in the Botanical Gazette, 33:49-61. 
3 pi. Jan. 1902. 
Alternaria citri Ellis & Pierce n. sp., the cause of Black 
Rot of Oranges, is described in the Botanical Gazette, 33 1234-5, 
March 1902. The losses are from 3 to 10 per cent of the crop of 
navel oranges in the districts of California. The cells of the 
pulp sacks are destroyed, and soon become black in color and 
bitter to the taste. 
The Ohio Agricultural Experiment Station has issued 
(Bulletin 128) a general index to its Reports and Bulletins, vol¬ 
umes 1 to 20, 1882 to 1901, a 43-page pamphlet. The references 
are not to the several Annual Reports and Nos. of the Bulletins 
but to the year and pages — a continuous pagination having been 
followed for the publications of each year after 1888. Under 
the head of “Diseases” of plants, of alfalfa, apple, asparagus, 
