nts of the
sporangial wall, and by the short columella scarcely reaching half the
height of the sporangium.

1. LAMPRODERMA PHYSAROIDES, A. & S. Sporangium globose; the wall with a
silvery metallic luster, at length breaking up and falling away. Stipe
long, slender, brown or blackish, arising from a small circular
hypothallus; columella clavate, obtuse, not reaching the center of the
sporangium. Capillitium of brownish-violet threads, arising from the
upper part of the columella; these branch repeatedly at a sharp angle,
form an intricate network of elongated meshes, terminating at the wall
in numerous short free branchlets. Spores globose, minutely warted,
bright brown, 12-14 mic. in diameter.

Growing on old wood, moss, etc., New York, _Chas. H. Peck_.
Distinguished by the pale silvery sporangial wall and the clear brown
spores.

2. LAMPRODERMA ARCYRIONEMA, Rost. Sporangium small, globose; the wall
dark bronze, with a silvery sheen when loosened from the spores, soon
breaking into scales and falling away. Stipe long and slender, smooth,
shining and black, rising from a thin hypothallus; the columella short
cylindric, variable in length, but not attaining the center of the
sporangium. Capillitium arising by division of the apex of the columella
into several primary branches; these immediately separate into numerous
slender flexuous brown threads, which unite and form a dense network of
small arcuate meshes, the ultimate branchlets not free. Spores globose,
even, violaceous, 6-7 mic. in diameter. See plate XI, Fig. 26.

Growing on old wood of Juglans and Carya. Sporangium .3-.5 mm. in
diameter, the stipe three or four times as long. The columella is
somewhat variable, it sometimes forks or divides immediately on entering
the sporangium, at other times it is longer and cylindric, with more
slender primary branches. The meshes of the capillitium resemble those
of Arcyria, whence the name. This is the _Stemonitis physaroides_, A. &
S. var. _suboeneus_ of Lea's Catalogue.

3. LAMPRODERMA VIOLACEUM, Fr. Sporangium depressed-globose, convex above
and more or less flattened and umbilicate beneath; the wall shining with
steel or violet, blue and purple tints, deciduous. Stipe short, stout,
brown or blackish in color, arising from a thin, brown, common
hypothallus; columella cylindric, or tapering slightly to an obtuse
apex, attaining the center of the sporangium. Capillitium of numerous
slender threads, radiating from the