t threads, which branch and anastomose to form a dense
interior network of large irregular meshes, and then spread out into a
superficial network of small polygonal meshes. Spores globose, even,
pale brownish-violet, 6-8 mic. in diameter. See Plate XI, Fig. 32.

Growing on old wood, mosses, etc. Sporangium with the stipe 5-9 mm. in
height, the sporangium .2-.3 mm. in thickness, the stipe variable in
length, but always shorter than the sporangium. The meshes of the
superficial network varying usually from 3-15 mic. in width, but
sometimes larger from 8-25 mic. The species grows scantily in this
region, but I have elegant specimens from Alabama, sent me by Prof. Geo.
F. Atkinson.

3. STEMONITIS MICROSPORA, Lister. Plasmodium white. Sporangia elongated,
subcylindric, tapering and obtuse at the apex, tapering gradually
downward, growing closely crowded together on a strongly-developed brown
hypothallus. Stipe and columella brown and smooth, tapering gradually
upward and reaching nearly to the apex of the sporangium, the stipe
shorter than the columella. Capillitium of slender tawny-brown threads;
the primary branches simple or only branched above, or with a few
lateral anastomosing branchlets, forming a rather loose network of large
irregular meshes; these support a superficial network of very small
polygonal meshes. Spores globose, even, tawny-brown, 5-6 mic. in
diameter.

Growing on old wood, bark, leaves, etc.; very common in this region.
Sporangium with the stipe 7-15 mm. in height, the sporangium .3-.4 mm.
in thickness, the stipe shorter than the sporangium. Meshes of the
superficial network 4-20 mic. in width. I am indebted to Arthur Lister,
Esq., of London, for pointing out to me the difference between this
species and the _Stemonitis ferruginea_ of Fries and Rostafinski.

4. STEMONITIS FERRUGINEA, Ehr. Plasmodium lemon-yellow. Sporangia
subcylindric, the apex obtuse, growing closely crowded together on a
thin, brown hypothallus. Stipe and columella brown and smooth, tapering
gradually upward and vanishing beneath the apex of the sporangium, the
stipe much shorter than the columella. Capillitium of slender,
tawny-brown threads, which immediately branch and anastomose, forming a
dense interior network of large irregular meshes, supporting a
superficial network of small polygonal meshes. Spores globose, very
minutely warted, tawny-brown in color, 7-9 mic. in diameter.

Growing on old wood, leaves, grasses, etc. Sp