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VOLUME XXVI NUMBER 2 
BOTANICAL CFAZELEE 
AUGUST 1898 
A COMPARATIVE STUDY OF THE DEVELOPMENT OF 
SOME ANTHRACNOSES. 
BERTHA STONEMAN. 
(WITH PLATES VII—XVIII) 
INTRODUCTION. 
THE investigations recorded in the following paper were 
undertaken (1) for the purpose of ascertaining by the growth 
characters developed in artificial cultures, the relationship of 
certain fungous diseases grouped under the common name of 
anthracnose, and (2) to determine, if possible, by a study of their 
life histories, the connection of these so-called imperfect fungi 
with perfect or ascigerous stages. 
Following the established precedent I have included under 
this general term certain conidial forms belonging to the family 
Melanconiacez ; and a few species of the closely related sphzr- 
opsidaceous genus Vermicularia, and Volutella belonging to the 
Tuberculariacez, which so closely approach the genus Colleto- 
trichum in their structural characters and in the effect upon the 
host plant that diseases belonging to these genera have been 
referred to the anthracnoses,* have also been studied. 
*The popular term anthracnose has no systematic value. The name first applied 
to the “bird’s eye” fungus of the grape (Sphaceloma ampelinum De Bary, Bot. Zeit. 
32: 451. 1874) has since been applied to diseases having a similar external appearance 
=~ agreeing in general in microbotanical characters. 
