* 
76 THIRTIETH REPORT ON THE STATE MUSEUM. 
AXCIDIUM PYROLATUM Schw. 
This seems to be one of the connecting links between Aicidium 
and Uredo. Leaves affected by it are more erect than the 
others and have a pale sickly appearance, so that it is not 
difficult, in looking at a patch of: the round leaved Pyrola, to 
tell at a glance what leaves are affected by the fungus. 
ZKCIDIUM EUPHORBLE Pers. - 
This species occurs quite commonly some seasons on Huphor- 
bia maculata in company with Uromyces Huphorbie. The 
branches whose leaves are affected by it are more erect than 
the others and more slender in their mode of growth. 
NECTRIA PULICARIS 7. 
The spores in this species are described in the Handbook of 
British Fungi as ‘‘elliptical or pyriform.’’ In the fungus 
inhabiting old corn-stalks and referred by some botanists to 
this species, the spores are oblong-fusiform. 
XYLARIA DIGITATA Gev. 
A Xylaria occurs quite frequently in our woods which has 
the smooth stem of this species and the short spores of X. 
Hypoxylon, thus ranking intermediate between the two. [am 
not fully satisfied whether it should be considered a distinct 
species or a variety of one or the other. The true X. digitata 
is quite rare in our State. 
RHYTISMA LINEARE Pk. 
This should be referred to the genus Hypoderma. It is, 
however, quite distinct from H. nerviseguum to which one 
writer has referred it. 
HYSTERIUM CLAVISPORUM C. & P. 
I have never been able to detect the narrow linear orifice of 
the genus Hysterium in this species. In my opinion it.belongs 
rather to the genus Dothidea. The same may also be said of 
Hyster‘um Rimincola Schw. 
DoTHIDEA DALIBARD& Pk. 
This rare species has occurred near Mud Pond in Hamilton 
county. 
VALSA RUFESCENS Schw. 
Mr. J. B. Ellis informs me that the specimens of this plant in 
the Schweinitzian Herbarium have simple cylindrical spores, 
.0003-.0004 long. This would make it distinct from V. acw- 
leans Schw. with which it has sometimes been confused. 
