ar spotted; but the spots are occasioned simply by the closer
aggregation, at particular points, of the ordinary papillae.

A southern species. All the specimens so far reported are from the
mountains of North Carolina.

The specimens referred to under this name by Lister, _Mon._, p. 92, as
coming from "Kittery, U. S. A." (Kittery, Maine?), are, no doubt,
according to Mr. Lister's figures, _Comatricha caespitosa_ Sturgis. See
under that species.

_C._ LAMPRODERMACEAE

Sporangia distinct, generally gregarious, more or less spherical;
capillitium developed chiefly or solely from the summit of the
columella.

=Key to the Genera of the Lamprodermaceae=

_A._ Columella percurrent; capillitium from a disk
at the apex 1. ENERTHENEMA

_B._ Columella scarce reaching the centre of the
sporangium.

_a._ Capillitium not forming a net 2. CLASTODERMA

_b._ Capillitium forming an intricate net 3. LAMPRODERMA

_c._ Minute, capillitium rudimentary 4. ECHINOSTELIUM

=1. Enerthenema= _Bowman_

1828. _Enerthenema_ Bowman, _Trans. Linn. Soc._, XVI., p. 152.

Sporangia stipitate, the stipe extended as a columella, which entirely
traverses the sporangium and forms at the apex an expanded disk; from
this depends the capillitium.

=Key to the Species of Enerthenema=

_A._ Spores free 1. _E. papillatum_

_B._ Spores in clusters 2. _E. berkeleyanum_

1. ENERTHENEMA PAPILLATUM (_Pers._) _Rost._

PLATE V., Fig. 3.

1801. _Stemonitis papillata_ Pers., _Syn._, p. 188.
1828. _Enerthenema elegans_ Bowm., _Trans. Linn. Soc._, XVI., p. 152.
1862. _Comatricha obtusata_ Preuss, Sturm, _Deutschl. Flora_, Pl. LXX.
1876. _Enerthenema papillatum_ (Pers.) Rost., _Mon. App._, p. 28.

Sporangia scattered or crowded, stipitate, spheroidal, naked, black
fuscous, above, shining, adorned with a minute, black papilla; stipe
black, opaque, conical or attenuate upward, about equal to the peridium;
columella at the apex expanded into a shining disk; capillitium
springing from the lower side of the disk or from its edge, made up of
scarcely forked threads which are free below; spores violaceous or
fuscous black, minutely warted, 10-12 mu.

Rare. Wisconsin, Ohio, South Carolina, Illinois, Pennsylvania, Iowa,
Colorado.

This is one of the few specie