114 BOTANICAL GAZETTE [ AUGUST 
genus in other characters more than they do from Gnomoniella. 
Excluded from these two genera its position would be in a 
genus between these two for which the writer proposes the name 
Gnomoniopsis with the following diagnosis : 
GNOMONIOPSIS, n. gen. 
Perithecia cespitose, membranaceous, dark brown, rostrate, 
of a lighter color at the apex in early stages, flask-shaped, 
hairy, situated upon or partly immersed in a stroma; asci ses- 
sile, aparaphysate?, clavate, sporidia eight, hyaline, oblong, 
single-celled, slightly curved, elliptical, subdistichous, including 
the following species: conidial form, certain species of Gloeos- 
porium : 
G. cingulata (p. 101), G. Schein (p. 104), G. rubicola (p. 108), G. cincta 
(p. 106), G. vanille ? (p. 1 
From the evidence of these perfect forms it is probable that 
the genera Gleeosporium and Colletotrichum have developed 
from one common ancestral genus of the pyrenomycetous form 
described above. Since of about thirty species studied but five 
have developed the complemental ascigerous stage, it is sug 
~ gested that they have, to a large extent, become divorced from 
a perfect stage, and have become so adapted to environment 
that they are able to maintain themselves from year to year 
without the intervention of this stage. Many of the anthrac- 
noses are parasitic on garden and orchard fruits, and are thus 
preserved with their host during the winter. Under less favor-— 
able circumstances the conidia may tide the fungus over, since _ 
they will stand a certain amount of desiccation. The stroma — 
and sclerotia may also assist in ther preservation. 
* CORNELL UNIVERSITY. 
BIBLIOGRAPHY. : 
ALWoop, Wo. B.: Ripe rot or bitter rot of apples. Bull. Va. Agr. = se. 
40 :59-82. May 1894 
ARTHUR, J. C.: Gleosporium timonte. N. Y. Agric. Exp. Sta. Rep. yas oe 
1884. 
