subject to much irregularity in the way
of abnormal swellings, duplicating the spines at the apex, etc.; the
spinules are sometimes quite obsolete on some or all of the elaters of a
sporangium.

Sec.3. GONIOSPORA, Fr. Sporangia obovoid to oblong, sessile and closely
crowded on a well-developed common hypothallus. Spores with thick ridges
upon the surface, which are combined into a more or less incomplete
network of polygonal meshes.

The ridges of the epispore are 1-2 mic. in height, and do not present to
the view more than two or three perfect polygons on a hemisphere of the
spores; more often the reticulation is imperfect, the ridges being
interrupted and defective. When highly magnified these ridges are seen
to be "perforated through their thickness with one, two or three rows,
or with clusters of cylindrical openings or pits, or are sculptured into
intricate plexuses of minute reticulations with quadrilateral
interspaces."

10. TRICHIA AFFINIS, DeB. Sporangia obovoid to oblong, sessile and
closely crowded on a common hypothallus; the wall thin, golden-yellow to
tawny or brownish-yellow, smooth and shining. Mass of capillitium and
spores golden to tawny-yellow; elaters long, simple, 4-5 mic. in
thickness, ending in a smooth tapering point, 6-10 mic. in length;
spirals four, usually spinulose, rarely smooth. Spores angularly or
irregularly globose, 10-12 mic. in diameter.

Growing on old wood and bark in small patches of a few millimeters to a
centimeter or more in extent. Sporangia .6-.8 mm. in height by .4-.5 mm.
in diameter. _Trichia Jackii_, Rost., is included in this species.

11. TRICHIA CHRYSOSPERMA, Bull. Sporangia oblong-obovoid to cylindric,
sessile and closely crowded on a well-developed hypothallus; the wall
thin, pale citron to olive-yellow, smooth and shining. Mass of
capillitium and spores, golden to ochre-yellow; elaters long, simple,
6-8 mic. in thickness, ending in a smooth tapering point, 3-7 mic. in
length; spirals four or five, usually smooth, rarely spinulose. Spores
angularly or irregularly globose, 12-14 mic. in diameter.

Growing on old wood, in small patches, one to several centimeters in
extent. Sporangia 1-2 mm. in height and .5-.6 mm. in diameter. This is
readily distinguished from _Trichia affinis_ by the larger and
differently colored sporangia.

IV. OLIGONEMA, Rost. Sporangia subglobose, more or less irregular,
sessile and closely crowded, often in heaps, one upon another, the