May 1904] Three New Species of Discomycetes 
99 
The leaf spot of P. hortorum is described as yellowish with a 
gray center while in this Ascochyta it is reddish or brownish in 
Ascochyta lycopersici Brun. Figs. 1-3, different stages in spore development 
from continuous to uniseptate; 4, germinating spores showing constrictions; 6, 6, 
two spores drawn with cam. luc., Leitz oc. 18, obj. 
color. The perithecia in Halsted’s material of P. hortorum are 
small, black and superficial, while in this Ascochyta they are 
usually submerged in the leaf tissue and the spot is often charac¬ 
terized by elevated concentric ridges of leaf tissue. 
This Ascochyta agrees so well with A. lycopersici that it has 
been referred to that species, but no authentic specimens have 
been found with which to compare it. It differs from A. lycoper¬ 
sici in having broader spores and in growing on a different host 
from which it has ever been reported. 
By inoculation experiments from pure cultures it has been 
proven that this Ascochyta is parasitic on Solanum melongena, 
Solarium lycopersicum, Solanum carolinense and Datura tatula. 
Delaware Experiment Station. 
Note. —The author kindly sent specimens of the fungus commented 
on, with request that the spores be critically inspected. Immediately upon 
the addition of eosin the uniseptate character of the mature spore was 
evident — showing that the fungus had been referred to the proper genus. 
Drawings 5 and 6 were added to the author’s list of figures.— [Editor.] 
THREE NEW SPECIES OF DISCOMYCETES. 
ELIAS J. DURAND. 
The following species of Discomycetes are probably unde¬ 
scribed, and it seems desirable for various reasons to present 
diagnoses at this time. 
