189 
In his “Sylloge”’, Saccardo* changed the specific name of the fungus to 
Peckii. His nomenclature is as follows: 
“Vermicularia Peckii Sace. 
V. Concentrica Peck, 29th Ann. Rep. N. Y. State Mus. Nat. Hist. 47-48, 
1878. (Not Ley., Ann. Soc. Nat. 66. 1845.) 
“VV. Peckti var. Viola rotundifolia Sace.” 
Through the kindness of Dr. H. ). House, State Botanist of New York, 
I was able to secure authentic specimens, collected and determined by Dr. 
Peck subsequent to his description of the fungus. These specimens were 
from Trillium erythrocarpum Michs. (7. undulatum Willd.) and from 
Viola rotundifolia. A careful examination of these specimens, togeth- 
er with some recently collected material from Dr. House, was made. Some 
of the spots were embedded in paraffin, sectioned and stained. From these 
examinations it was concluded that the fungus occurring on Viola rotundi- 
folia was not a Vermicularia but was identical with the Collefotrichum 
occurring on V. cucullata. The spore measurements and general charac- 
ters of the acervulus, setze and conidiophores of the fungus on Trillium 
were also identical but, as stated by Dr. Peck, the acervuli of the former 
occur in definite concentric circles in the spot, while in the latter no such 
arrangement is noticeable. Whether or not the species on Viola cucullata 
is identical with the one on Trillium can only be determined by cross- 
inoculation. Up to the present time the author has not had an oppor- 
tunity to complete his investigations along this line. It would be unusual, 
however, to have a fungus of this type parasitic on hosts so widely sepa- 
rated as Trillium and Viola. The identity of the fungi on the two violet 
species can hardly be questioned. The nomenclature of the fungus on 
Viola rotundifolia is so awkward and incorrect that a change should be 
made. However, this is not advisable until the relationship to the fungus 
occurring on Trillium is definitely settled. 
Life History of the Fungus—tThe field observations of this fungus 
have been limited to a single year. The disease appears at a very early 
period in the spring on leaves that have evidently lived over winter. The 
earliest collections were made in the first week in April before the plants 
had time to develop leaves. It is probable therefore that the fungus lives 
over wilter on the old leaves of the plant, although it has not been ob- 
served during the winter months. 
(#7) Saceardo, P., Sylloge Fungorum. 3: 232. 1884. 
