The length of the tubes varies. The
mouths or openings are also of different shapes and sizes. They are
sometimes round, and at other times irregular. The color of the mouths
is often different from the tubes, and changes when mature. The mouths,
too, are sometimes stuffed when young. The attachment to the pileus is
to be noted. They may be free or easily detached, depressed around the
stem or fastened to it (adnate.)
CLASSIFICATION OF FUNGI.
The color of both gills and tubes is an important feature in the
classification of fungi.
We have now arrived at a point where the amateur may become wearied at
the reading of long names and the enumeration of classes and genera.
Stevenson has said in his preface to his work on British Fungi that
"there is no royal road to the knowledge of fungi," and if we become
enough interested to pursue the subject we will probably discover it at
this point. We will try and make this part as simple as possible, and
only mention those genera which are most common.
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