ANS, Bull. Sporangium cylindric; the calyculus small,
granulose, ribbed and sulcate. Stipe very short, arising from a common
hypothallus. Capillitium greatly elongated after dehiscence, cylindric,
drooping and pendulous, pale yellow or pale ochraceous; the threads 3-4
mic. in thickness, the surface covered with spinules, among which are
rings and half-rings, with an indistinct spiral arrangement. Spores
globose, even, 7-9 mic. in diameter.

Growing on old wood. The capillitium elongated 4-8 mm., the stipe very
short. A very conspicuous species by reason of its long pale yellow
capillitium.

Sec.2. PLECTANELLA. Capillitium erect, firmly attached by numerous threads,
which issue from the interior of the stipe, but are connate with the
wall of the calyculus, after dehiscence not much expanded: the meshes at
the surface of the network much smaller than those within, folded back
and forth, narrow and irregular, their threads densely warted or
spinulose; the meshes of the interior much larger, open and expanded,
their threads with minute scattered warts or perfectly smooth.

5. ARCYRIA CINEREA, Bull. Sporangium ovoid or oblong-ovoid; the
calyculus very small. Stipe long, erect, cinereous, becoming blackish,
standing on a thin hypothallus. Capillitium not much expanded after
dehiscence, ovoid-oblong, erect, pale cinereous, sometimes pale
yellowish; the external threads densely spinulose, 2-3 mic. in
thickness; the threads of the interior thicker, 3-5 mic., and very
minutely warted or quite smooth. Spores globose, even, 6-8 mic. in
diameter.

Growing on old wood. Capillitium 1-2 mm. long, the stipe about the same
length.

6. ARCYRIA COOKEI, Mass. Sporangium ovoid-cylindric, the calyculus very
small. Stipe long, erect, gray to mouse-color, darker below, arising
from a thin hypothallus. Capillitium not much expanded after dehiscence,
ovoid-cylindric, erect, gray to mouse-color; the superficial threads
densely and uniformly covered with minute warts, 3-5 mic. in thickness;
the threads of the interior thinner, about 2 mic. and smooth, or with
very minute scattered warts. Spores globose, even, 6-8 mic. in diameter.
See Plate I, Fig. 16.

Growing on old wood, mosses, etc. Capillitium 1-2 mm. long, the stipe
about the same length. It seems as common as _Arcyria cinerea_, and has
heretofore been included in it. See Massee's Monograph, p. 154.

7. ARCYRIA DIGITATA, Schw. Sporangium cylindric, the calyculus very
small. Stipe lon