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PURPLE OR PURPLE-BROWN SPORE PRINT<br />
Figure 44. Agaricus abruptibulba. <strong>Edible</strong> and choice.<br />
generous size and the added fact that several or many often come<br />
up near one another.<br />
Eminently edible: AGARICUS CAMPESTRIS (Field<br />
Mushroom)<br />
This is the common cultivated mushroom (Figure 45 and Plate<br />
iC). In nature it is found scattered or in groups, sometimes in<br />
fairy rings or partial rings, on open, grassy ground, and it is by<br />
no means uncommon in and around cities.<br />
When the caps first push up through the ground after a rain<br />
they are nearly spherical, like the button mushrooms sold in the<br />
markets. In a matter of hours, however, the caps expand and enlarge.<br />
In the button stage a layer of mycelium extends from the<br />
margin of the cap to the stem, protecting the gills, as in all species<br />
of Agaricus, but as the margin stretches out this veil is broken<br />
and forms the familiar, flaring ring on the stem. The gills have<br />
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