1898] THE DEVELOPMENT OF SOME ANTHRACNOSES 71 
eral purposes, as they are rich in nitrogenous matter and the 
fungus has a vigorous healthy growth upon a substratum of a 
consistency near that upon which they are accustomed to grow, 
Of nearly all the species studied, the structural characters 
and relation to the host have received previous study from an 
economic standpoint; in such cases these points have been 
briefly mentioned. While germination of conidia has been 
observed in all species, a detailed account of those which agree 
quite closely would be tedious; it has, therefore, been usually 
omitted except in cases where some differences from the normal 
type have been observed. 
Herbarium specimens, tube cultures, and microscopic mounts 
have been placed in the Botanical Department of Cornell Uni- 
versity where the work has been conducted. 
My acknowledgments are due to Professor George F. Atkin- 
son at whose suggestion the work was undertaken and to whose 
ready advice and assistance I have been greatly indebted, and 
to Messrs, J. B. Ellis, S. M. Tracy, Byron D. Halsted, and others 
for their cheerful compliance to requests for fungi from their 
herbaria. 
GLa@osporIUM FRUCTIGENUM Berk. ( figs. 1-4, 33-38, 83). 
This species, which has been so fully and carefully described 
by Miss Southworth,? and to which Mr. Alwood: has recently 
devoted considerable attention, is comparatively rare in the 
northern states. The material from which the disease was 
Studied was obtained from apples in the northern markets and 
from quinces in an orchard at Ithaca. The presence of the 
fungus was indicated by the characteristic dark brown spots 
_Which Spread rapidly in size and become somewhat sunken. 
The center of the spot becomes quite dark in color from the 
Numerous black pustules which rupture the epidermis a few 
days after the spot has made its appearance. From some 
of the pustules the abundance of conidia presents a pale rose 
*Jour. Myc. 6: 164-173. 1891. 
*Ag. Exp. Sta. Virginia, Bull. no. 40, May 1894- 
