Let him begin with Section A, "with
cap." 1. Mushrooms with radiating gills beneath caps (Agarics). The key
then follows: 1. Plants fleshy, soon decaying. 2. Turn to number 2.
There are two descriptions, juice milky and juice watery; he will choose
the second one, which is followed by the number 3. Then follows, stem
central or nearly so; this agrees with the plant, and leads to 4. The
first line reads "white spores," which is correct; then comes 5. There
are four lines with descriptions, the last one, "no ring and no volva,"
is right, which leads to 7. There are here two lines belonging to 7, the
second one, "gills in the form of folds, obtuse edge," is correct, and
points to 10. This reads, "Gills decurrent, plant terrestrial,
Cantharellus." The Key gives the name of the _genus_ only. In the list
of descriptions an attempt is made to mention some of the commonest
species. These directions apply to all the keys alike.
DIVISION I.
Key to Hymenomycetes, Membrane Fungi.
Hymenomycetes or membrane fungi are divided into two sections:
Section A, with cap.
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