Mushrooms may be divided into three great classes:
I. Gasteromycetes, or "Stomach fungi," where the spores are produced
within the plant.
II. Ascomycetes, or "Spore sac fungi," where the spores are produced in
delicate sacs called asci.
III. Hymenomycetes, or "Membrane fungi," where the spores are produced
on the lower surface of the cap.
CLASS III. HYMENOMYCETES, OR MEMBRANE FUNGI.
This class is divided into six orders:
1. Gill-bearing mushrooms, Agarics, or Agaricini.
2. Fungi with pores or tubes, Polyporei.
3. Fungi with awl-shaped teeth or spines, Hydnei.
4. Fungi with an even spore-bearing or slightly wrinkled surface,
Thelephorei.
5. Plants, club-shaped and simple, or bush-like and branched, Clavariei.
6. Gelatinous plants, irregularly expanded, Tremellinei.
The first order, the Agarics, contains most of the well-known mushrooms,
as well as most of the edible ones. They have been divided into
different classes according to the color of the spores. In a great many
cases the color is the same as that of the gills; but this is not always
the case, especially in the young plants.
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