lor and habit. To the
naked eye the fructification suggests _Trichia persimilis_; the color
much the same, and the sporangia similarly congested. The peculiarly
rudimentary condition of the capillitium is apparently also constant.
Iowa specimens accord perfectly with those from New York.

Rare. New York, Ohio, Pennsylvania, North Carolina, Iowa, Missouri,
Oregon, Washington, California; Vancouver Island.

3. OLIGONEMA NITENS (_Lib._) _Rost._

PLATE II., Figs. 8, 8 _a_, 8 _b_.

1834. _Trichia nitens_ Lib. _Pl. Cr. Ard._, III., No. 227.
1875. _Oligonema nitens_ (Lib.) Rost., _Mon._, p. 291.
1883. _Trichia pusilla_ Schroet., _Kr. Fl. Schl._, III., p. 114.

Sporangia gathered in small, heaped clusters, irregularly spherical,
bright straw-color, or yellow, sessile, superimposed, the peridium thin,
smooth, shining; capillitium of short elaters, simple or branched,
smooth, adorned with an occasional projecting ring, often with faint
spiral sculpture spreading especially toward the apices, which are blunt
or anon acute, the point sometimes flexed or bent to one side, never
very long; spore-mass bright yellow, spores globose, beautifully
reticulate, 12-14 mu.

Readily recognized at sight by its heaped, shining, or glistening
sporangia. The capillitial threads are further definitive, and serve to
distinguish it from everything else.

The range is wide, probably coextensive with the forests of the country.
Specimens are before us from New England, Canada, Montana, and all
intervening regions, and south to the Gulf of Mexico; California,
Nevada,--_Prof. Bethel._ Yosemite, shores of Mirror Lake!

4. OLIGONEMA FULVUM _Morgan._

1893. _Oligonema fulvum_ Morgan, _Jour. Cin. Soc._, p. 42.

Sporangia large, sub-globose, sessile, or crowded, more or less regular;
the peridium tawny yellow, or olivaceous, very thin and fragile,
iridescent; mass of capillitium and spores tawny-yellow, elaters simple
or sometimes branched, very short, sometimes with thicker swollen
portions, the surface marked with low smooth spirals, in places faint
and obsolete, the extremities rounded and obtuse, usually with a minute
apiculus; spores globose, minutely warted, 10-13 mu.

This species may be recognized by its tawny, irregular, more or less
crowded sporangia. Under the lens the warted, not reticulate, spores are
diagnostic. The elaters are quite constantly marked by imperfect
spirals.

Our specimens are from the author of the sp