i6 
WALTER SPURGEON BEACH 
of the fungus the specimens showed no distinctions beyond the limits of 
variation, and the morphological differences given in the literature are 
within the range of personal error. The ease with which the fungus passed 
from the mallow to the hollyhock indicates that this may happen in nature. 
The plants inoculated in the open were somewhat shaded, and were covered 
three days with a bell jar. The evidence is sufficient to prove the identity 
of 5. malvicola and S. fairmani. Leaves of both Althaea rosea and Malva 
rotundifotia infected by inoculation with spores from the latter host are 
illustrated in Plate I, figs. 5 and 6, 
Septoria scrophulariae Peck 
Verbascum thapsus was the only host outside the genus Scrophularia 
to which Septoria scrophulariae would transfer, and in this case spots with- 
out pycnidia developed. These spots are believed to represent a real 
cross-infection, since the spores applied were from a pure culture, and the 
disease was confined to the area inoculated on each leaf. The results of 
inoculations indicate that Verbascum blattaria can be infected to a slight 
extent, but this was not definitely proved. 
Diagram 6. Infections with Septoria scrophulariae from Scrophularia marilandica. 
A resemblance in many respects between Septoria scrophulariae and 
S. verbascicola will be discussed in a following section. 
Septoria convolvuli Desm. 
Septoria Septulata sp. nov. 
In the Saccardian description of Septoria convolvuli Desm., both Con- 
volvulus arvensis and C. sepium are given as hosts, but the following distinc- 
tions in morphology are noted in the forms from the respective hosts: 
