414 Wisconsin Academy of Sciences , Arts , and Letters. 
service, his data have not been published. His death deprived 
phytopathology of a promising devotee. The results obtained by 
Beach accord with Roark’s findings (Amer. Jour. Bot. 6: 26). 
I have not seen an authentic specimen of Ellisiella mutica, Wint., 
but it seems probable that the fungus for which I proposed the 
name Colletotrichum silpJiii (Trans. Wis. Acad. 192:686) is con- 
specific therewith. If that is the case, of course Winter’s specific 
name should be used unless Vermicularia silphn Schw. is the same 
thing. Both Peck and Ellis doubted the distinctness of Ellisiella 
from Collet otrichum. 
In the provisional list Gloeosporium canadense Ell. & Evht. was 
included in G. nervisequum (Fckl.) Sacc. Investigation, however, 
by H. R. Rosen and by Eleanor J. Murphy indicates that it is 
distinct as shown by host relations and by the characters of the 
Gnomonia stage. 
Gloeosporium leptospermum Pk. collected at Mosinee June 23, 
1918, bears sporules but 10-13 x 3/*. The small size of the sporules 
might be attributed to immaturity but some of them had already 
oozed out in masses. This seems to be connected with Cryptomyces 
pteridis (Reb.) Rehm. 
While Marssonina as it usually occurs on the aspens bears hypo- 
phyllous acervuli and small sporules in material collected at 
Mercer on Populus tremuloides the acervuli are epiphyllous and 
the sporules are about 18 x 10/*. A specimen from Fish Creek on 
Populus balsamifera has epiphyllous acervuli containing sporules 
20-26 /a long. 
Myrioconium comitatum Davis has been collected on leaves of 
Populus tremuloides that bear no Sclerotium bifrons Ell. & Evht. 
The large, dead, sharply delimited leaf areas are like those on which 
the Sclerotium occurs. In this collection the Myrioconium is scat¬ 
tered more generally over the leaf surface than usual. 
In compiling the provisional list the names of four hosts were 
placed under Bamularia rufomaculans Pk., namely, Polygonum 
aviculare, P. amphibium, P. Muhlenbergii, and P. cilinode. The 
plant on P. aviculare is Ovularia rigidula Delacr. (0. avicularis 
Pk.) with conidiophores varying in length up to 80/* and conidia 
10-18 x 4-6/*. The leaves in the specimens on P. cilinode are 
