prismatic by mutual pressure; opening by
rupture of the apex, the lateral walls entire TUBIFERACEAE

_D._ Fructification aethalioid, the sporangia ill
defined, their walls more or less
perforate, frayed, or dissipated, forming
a pseudo-capillitium, RETICULARIACEAE

_E._ Fructification of distinct and separate
sporangia, the walls more or less
reticulately perforate especially above CRIBRARIACEAE

_A._ LICEACEAE

A single genus,--

=1. Licea= (_Schrader_) _Rost._

1797. _Licea_ Schrader, _Nov. Gen. Plant._, p. 16, in part.
1875. _Licea_ (Schrader) Rost., _Mon._, p. 218.

Sporangia plasmodiocarpous, looped, irregular, or distinct, sessile,
and regularly rounded or elliptical; the peridium simple, rather firm,
ruptured irregularly or by simple fissure; hypothallus none.

This genus is distinguished from other similar plasmodiocarpous forms by
the extreme simplicity of its structure. There is absolutely no
capillitium nor anything like it, simply a mass of spores surrounded by
thin membranous walls. The spores range from pale olive, colorless under
the lens, through various shades of brown to dusky almost black in _L.
pusilla_. Schrader included the _Tubifera_ species.

=Key to the Species of Licea=

_A._ Plainly plasmodiocarpous 1. _L. variabilis_

_B._ Opening by regular segments.

1. Segments two only 2. _L. biforis_

2. Segments several.

i. Spores brown 3. _L. minima_

ii. Spores dusky olive 4. _L. pusilla_

1. LICEA VARIABILIS _Schrader._

PLATE XII., Figs. 7 and 8.

1797. _Licea variabilis_ Schrader, _Nov. Gen._, p. 18, Pl. VI.,
Figs. 5 and 6.
1801. _Licea variabilis_ Schr., Pers., _Syn. Meth._, p. 197.
1801. _Licea flexuosa_ Pers., _Syn. Meth._, p. 197.
1911. _Licea flexuosa_ Pers., List., _Mycetozoa, 2nd ed._, p. 189.

Fructification plasmodiocarpous, elongate, hamate, annulate or
irregularly repent, very dark brown, rough, the peridium of two layers,
the outer closely adhering, dark brown, thick, opaque, the inner
delicate, membranous, very thin, transparent, iridescent, rugulose,
rupturing irregularly; hypothallus none; spores in mass pale yellow with
a greenish tinge, by transmitted light nearly colorless, large, glob