Growing on old wood. Sporangium .30-.35 X .25-.30 mm, the stipe two to
four times as long as the sporangium. A minute species, easily
recognized by its almost uniform color of bright new copper.

IV. DICTYDIUM, Schrad. Sporangium simple, depressed-globose, stipitate,
cernuous; the wall regularly thickened on the inner surface by numerous
convergent ribs, which extend from base to apex and are united by fine
transverse fibers, thus forming a network of rectangular meshes; the
basal portion of the membrane sometimes persists as a calyculus, the
upper part disappears at maturity. Spores globose; purplish.

The ribs run from base to apex like the meridians on a globe; they are
simple, or here and there they separate into two divergent branches,
which sometimes again converge into one; at the apex of the sporangium
there is usually a small irregular net in which all the ribs terminate.

1. DICTYDIUM CERNUUM, Pers. Sporangium depressed-globose, umbilicate at
the apex, stipitate, cernuous, purplish-brown in color; the calyculus
granulose within, occupying from one-fourth to one-third of the
sporangium, the ribs united by firm, persistent fibers. Stipe not very
long, erect, tapering upward, bent at the apex, purplish-brown, the apex
pale and pellucid, standing on a small hypothallus. Spores
purplish-brown in mass, globose, even, 5-7 mic. in diameter.

Growing on old wood. Sporangium .4-.5 mm. in diameter, the stipe two or
three times longer than the diameter of the sporangium. This appears to
be the species figured and described by Rostafinski and by Massee.

2. DICTYDIUM LONGIPES, Morg. n. sp. Sporangium large, depressed-globose,
the apex umbilicate, stipitate, cernuous, dark purple in color;
calyculus usually wholly wanting, the ribs united by weak fibers, which
are easily torn asunder, allowing the ribs to curl up inwards. Stipe
very long, flexuous, tapering upward, curved and twisted at the apex,
dark purple in color, standing on a thin hypothallus. Spores in the mass
dark purple, globose, even, 5-7 mic. in diameter. See Plate III, Fig.
12.

Growing on rotten wood, mosses, etc. Sporangium .5-.7 mm. in diameter,
the stipe three to five times as long. This is a much larger species
than the preceding; it has a uniform dark purple hue, the stipe is very
long and much bent and twisted, the ribs of the sporangium are soon torn
apart and rolled inward.

EXPLANATION OF PLATE III

Fig. 1.--Licea biforis, Morgan, n. sp.