22 
The Ohio Naturalist. 
[Vol. XIII, No. 1, 
1. Aerial stems evergreen, rough to a greater or less degree; 
cones tipped with a rigid point. 
a. Sheaths cylindrical, not dilated upward, usually with 
2 black bands, sometimes entirely black; stems 
rough, tuberculate. 
E. hyemale. 
E. robustum. 
b. Sheath elongated, dilated upward, with a narrow 
black band at the top and frequently with a second 
irregular one below; stems smoothish, only slightly 
tuberculate. 
E. laevigatum. 
2. Aerial stems annual, smooth; cones without a point. 
a. Stems usually unbranched except when broken; 
sheaths elongated, dilated upward, with a narrow 
black band at the top, rarely with a faint second 
one below. 
E. kansanum. 
In conclusion, the writer wishes to express his thanks to the 
directors and curators of the three herbaria visited, for courtesies 
shown in the study of the valuable materials without which the 
solution of the problem to the writer’s satisfaction would have 
been much more difficult. 
CONCERNING OHIO POLYPORACEAL 
L. O. Overholts. 
In the June number of the Ohio Naturalist for 1911 an article 
by the present writer appeared entitled “The Known Polypo- 
raceae of Ohio. ” Since the appearance of that article attention 
has been called to certain omissions, both in the enumeration of the 
species and in the bibliolgraphy that was appended, and it was 
thought best to take this means of making the corrections. 
The paper was a preliminary list of species intended to be used 
as the basis for a key to the genera and species. Illustrations were 
cited and a bibliography was appended in the effort to get collectors 
in different localities to give some attention to this group, in order 
that some definite knowledge of the number and identity of the 
species might be obtained. The list was based on the writings 
of Berkeley, Hard, Lea, Lloyd, Montagne, Morgan and Murrill. 
Several collections of specimens were recieved from corres¬ 
pondents in various parts of the state and specimens were exam¬ 
ined in the state herbarium at Columbus and in the Lloyd museum 
at Cincinnati. Many collections were made in the Miami valley 
by persons connected with the department of Botany at Miami 
University. These latter are for the most part in the writer’s 
