te,
or yellowish white, and often shows the yellow color when dried. The
plant sometimes occurs in the form of a fairy ring as shown in Fig. 18.
It is 5--12 cm. high, the cap from 5--15 cm. broad and the stem 8--15
mm. in thickness.

The =pileus= is smooth, quite thick and firm, convex to expanded. The
=gills= are first white, then tinged with pink and finally blackish
brown. The =stem= is stout, nearly cylindrical, hollow, bulbous. The
veil is double like that of _Agaricus placomyces_, the upper or inner
layer remaining as a membrane, while the lower or outer layer is split
radially and remains in large patches on the lower surface of the upper
membrane.

[Illustration: FIGURE 20.--Agaricus silvicola, showing radiately torn
lower part of veil. (Natural size.) Copyright.]

=Agaricus (Psalliota) silvicola= Vittad. =Edible.=--The _Agaricus
silvicola_ grows in woods, groves, etc., on the ground, and has been
found also in a newly made garden in the vicinity of trees near the
woods. It is an attractive plant because of its graceful habit and the
delicate shades of yellow and white. It ranges from 10--20 cm. high, the
cap is 5--12 cm. broad and the stem 6--10 mm. in thickness.

The =pileus= becomes convex, and expanded or nearly flat, and often with
an elevation or umbo in the center. It is thin, smooth, whitish and
often tinged more or less deeply with yellow (sulfur or ochraceous) and
is sometimes tinged with pink in the center. The flesh is whitish or
tinged with pink. The =gills= when very young are whitish, then pink,
and finally dark brown or blackish brown, much crowded, and distant from
the stem. The =stem= is long, nearly cylindrical, whitish, abruptly
enlarged below into a bulb. It is often yellowish below, and especially
in drying becomes stained with yellow. The =ring= is thin,
membranaceous, delicate, sometimes with broad, soft, floccose patches on
the under side. The ring usually appears single, but sometimes the
=veil= is seen to be double, and the outer or lower portion tends to
split radially as in _A. arvensis_ or _A. placomyces_. This is well
shown in large specimens, and especially as the veil is stretched over
the gills as shown in Fig. 20.

From the form of the plant as well as the peculiarities of the veil in
the larger specimens, it is related to _A. arvensis_ and _A.
placomyces_, more closely to the former. It occurs during mid-summer and
early autumn. Figure 10 is from plants (No. 1986 C. U. h