The Project Gutenberg EBook of Ohio Biological Survey, Bull. 10, Vol. 11,
No. 6, by Bruce Fink and Leafy J. Corrington

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Title: Ohio Biological Survey, Bull. 10, Vol. 11, No. 6
The Ascomycetes of Ohio IV and V

Author: Bruce Fink and Leafy J. Corrington

Release Date: July 4, 2006 [EBook #18754]

Language: English

Character set encoding: ASCII

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Volume II, No. 6 Bulletin No. 10

OHIO BIOLOGICAL SURVEY

THE ASCOMYCETES OF OHIO IV

THE LECIDEACEAE

By BRUCE FINK

THE ASCOMYCETES OF OHIO V

THE PELTIGERACEAE

By LEAFY J. CORRINGTON

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
known, in structure of the sexual reproductive areas, the family seems
to be closely related to the mainly non-lichen _Patellariaceae_ and to
such lichens as the _Gyalectaceae_, the _Lecanactidaceae_, the
_Collemaceae_, the _Baeomycetaceae_, and the _Cladoniaceae_.

Following the commonly-accepted theory that the lichens have been
evolved from non-algicolous fungi, the origin of the _Lecideaceae_ and
related lichens from _Patellaria_-like ancestors is a reasonable
supposition, though the relative rank of the various related families
named in the last paragraph is not easy to decide. Within the
_Lecideaceae_, the line of evolution seems to have been in the direction
of a well-developed exciple and from simpler to more co