pecies
which closely resemble each other--viz., Clitopilus _prunulus_, "Plum
mushroom," and Clitopilus _orcella_, "Sweetbread mushroom,"--are highly
recommended for their delicacy of flavor.

In Leptonia most of the species are small, thin, and brittle,
corresponding with Mycena in the white-spored series, and with Psathyra
and Psathyrella in the dark-spored series.

Eccilia corresponds with Omphalia. Claudopus corresponds with Pleurotus
in its habit of growth and lateral stem, differing in the color of the
spores.

Annularia includes only a few small species having a ringed stem, no
volva, and free pink gills. Cooke says of this subgenus that no British
species are known.

The recorded species of Pluteus have their habitat on tree stumps,
sawdust, or upon fallen timber. One species, Pluteus _cervinus_, is
recorded as edible, but not specially commended. Of Entoloma,
Worthington Smith says, "It is allied to Tricholoma, though most of the
species are thinner and often brittle. It agrees also in structure with
Hebeloma and Hypholoma." None of the species are recorded as having
value as esculents.

The genus Bolbitius is described by Cooke as a small genus intermediate
between Agaricus and Coprinus on the one side, and Coprinus and
Cortinarius on the other. The species are small and ephemeral. Saccardo
places Bolbitius in his division Melanosporae, although the spores are
ochraceous.

In the section Pratelli Psalliota and Hypholoma contain mushrooms which
are of exceptionally fine flavor. In the first of these is found the
common field mushroom Agaricus campester and its allies.

The black-spored section Coprinarii contains two genera which include a
few recorded edible species, viz., Coprinus and Gomphidius. The
Psathyrellas correspond in size to the Mycenas in the white-spored
series and to the Psathyras in the purple-spored section; the gills are
free or adnate and turn black when mature. None of the species are
edible.

In Paneolus the plants are somewhat viscid when moist, the gills are
described as "clouded, never becoming purple or brown." They are usually
found on manure heaps near cities. None are edible.

Saccardo in his Sylloge combines the Pratellae and Coprinarii, making of
them one section which he calls _Melanosporeae_.

G. Massee, the British mycologist, makes of the black-spored and the
purple and purplish-brown spored series two divisions, calling them,
respectively, _Porphyrosporeae_ and _M