es globose, very minutely warted, brown, 7-9 mic.
in diameter. See Plate XI, Fig. 33.

Growing on old wood. Sporangium with the stipe 15-25 mm. in height, the
stipe 4-6 mm. in length, the sporangium about .4 mm. in thickness; the
meshes of the superficial network of the capillitium 25-50-80 mic. or
sometimes as much as 100 mic. in extent. This is _Stemonitis Morgani_,
Peck.

V. ENERTHENEMA, Bowm. Sporangium regular, globose, stipitate; the wall
thin and fragile, fugacious. Stipe stout, thick, tapering upward,
entering the sporangium and prolonged to its apex, there expanding into
a discoid membrane. Capillitium originating from the lower surface of
the apical disk of the columella; the threads branched a few times and
hanging downward, their extremities free. Spores globose, violaceous.

A well-marked genus, by reason of the peculiar origin of the
capillitium.

1. ENERTHENEMA PAPILLATUM, Pers. Sporangium globose, stipitate; the wall
brown or blackish, soon disappearing. Stipe black, rugulose, thick
below, tapering above into the slender columella, which, at its apex,
expands into a thin membranaceous disk. Capillitium of long brown
threads suspended from the apical disk, the threads branched a few
times, occasionally anastomosing by a short, transverse branchlet, the
free ends often forked. Spores globose, very minutely warted,
violaceous, 10-12 mic. in diameter. See Plate XI, Fig. 35.

Growing on old wood. Stipe and columella .8-1.2 mm. in height. The
species seems to be rare in this country, as I have met with it but once
myself, and have received only a few specimens from elsewhere.

VI. DIACHAEA, Fr. Sporangia globose to oblong, stipitate, arising from a
common hypothallus; the wall thin, rugulose, iridescent with metallic
tints, breaking up irregularly and gradually falling away. Stipe and
columella thick, erect, rigid, tapering upward, filled with minute,
roundish granules of lime, white or yellowish in color. Capillitium
arising from numerous points of the columella, the threads repeatedly
branching and anastomosing to form an intricate network, attaining the
wall by numerous short free extremities. Spores globose, violaceous.

This genus is scarcely to be distinguished from Lamproderma, except by
the white mass of lime which fills the tube of the stipe and columella.

1. DIACHAEA LEUCOPODA, Bull. Sporangia ovoid-oblong to short cylindric,
the base obtuse or slightly umbilicate, the apex more rounded;