Published by
THE OHIO STATE UNIVERSITY
COLUMBUS,
1921




THE ASCOMYCETES OF OHIO IV[A]


The Lecideaceae.

BRUCE FINK.




GENERAL CONSIDERATIONS


It was stated in the second paper of this series that the disposition of
the _Lecideaceae_ in an early paper of the series would show what slight
changes are needed in treating lichens as we treat other ascomycetes. It
is hoped that this paper has accomplished this in phraseology
intelligible to those acquainted with the present-day language of
systematic mycology.

The _Lecideaceae_ form a well-defined family of lichens, the affinities
of which seem plainly marked. In apothecial structure, and so far as