nger than the
columella. Capillitium of very slender flexuous tawny-brown threads;
these branch repeatedly, forming an intricate network of small irregular
meshes, ending in very short free extremities. Spores globose, minutely
warted, dark violaceous, 7-9 mic. in diameter.

Growing on old wood. Sporangium 1.5-3 mm. in height by .35-.40 mm. in
thickness, the stipe usually about the same length as the sporangium,
but sometimes nearly twice as long. The capillitium is rather looser
than in _C. typhina_, whence the drooping habit. Peck, Thirty-first
Report, p. 42.

3. COMATRICHA NIGRA, Pers. Sporangia globose or ovoid to ellipsoid or
oblong, erect or sometimes inclined or even nodding. The stipe very
long, smooth and black, tapering upward, expanding at the base into a
small circular hypothallus; the columella short, reaching from one-half
to three-fourths the height of the sporangium. Capillitium of slender
flexuous brown threads, which branch repeatedly, forming a dense
intricate network of small meshes, ending in very short free
extremities. Spores globose, even, dark violaceous, 8-10 mic. in
diameter.

Growing on old wood, leaves, etc. Sporangium .5-1.5 mm. in height, .5-.8
mm. in diameter, the stipe 1.5-3 mm. long or sometimes considerably
longer. This species seems to be rare in this country. I have preferred
the name adopted by Schroeter to Rostafinski's _Comatricha Friesiana_.

4. COMATRICHA ELLISII, Morgan, n. sp. Sporangia short, erect, oval or
ovoid to oblong. Stipe and columella erect, brown and smooth, rising
from a thin pallid hypothallus, tapering upward and vanishing into the
capillitium toward the apex of the sporangium, the stipe usually longer
than the columella. Capillitium of slender pale brown threads; these
branch several times with lateral anastomosing branchlets, forming a
rather open network of small meshes, ending with very short free
extremities. Spores globose, even, pale ochraceous, 6-7 mic. in
diameter. See Plate XI, Fig. 29.

Growing on old pine wood. Sporangium .3-.6 mm. in height by .3-.5 mm. in
width, the stipe usually a little longer than the sporangium. This
elegant little species I have from Mr. J. B. Ellis, of Newfield, N. J.
It is said to be mingled in some of the specimens with _Lamproderma
Ellisiana_, Cke.

Sec.2. LARVELLA. Threads of the capillitium branching a few times and
anastomosing to form a network of large meshes, attaining the wall by
numerous long, free extremiti