us
crystalline deposits in special vesicles and the spores show remarkable
variation in unusual size--15-30 mu.[1]

Should probably be entered _Lepidoderma granuliferum_ (Phill.) Fr.,
spores 15-18 mu.[34]

Utah,--Harkness.

3. LEPIDODERMA CHAILLETII _Rost._

PLATE XVIII., Figs. 6, 6 _a_, 6 _b_.

Sporangia distinct, coalescent or plasmodiocarpous, large, when isolated
1-1.5 mm., dull drab in color, very sparsely sprinkled with white
tetrahedral or irregular scales; the peridium thin, more or less
translucent, rugulose, dull brown, persistent; columella none;
capillitium abundant, under the lens purple-brown, sparingly branched,
even, stout, rigid, no calcareous deposits nor vesicles; spores 8-10 mu,
minutely warted, fuliginous.

Yosemite Canyon, California, _Prof. B. Shimek._

This is, no doubt, similar to _L. carestianum_ but differs in the size
and habit of the sporangia, and in the fact that the capillitium is
uniform throughout, whatever the style of fructification, and in the
size, color, and surface characters of the spore.

Evidently not _Didymium granuliferum_ Phill. Both will, no doubt, be
again collected, and we shall then have much needed light.

Nor is this quite Rostafinski's species as cited. The spores are much
smaller; Rostafinski says 10-12 or more, and calls for a distinctly
netted capillitium, the surface strongly marked by abundant calcareous
crystals. Ours may be a different thing.

=5. Colloderma= _G. Lister_

1910. _Colloderma, Jour. of Botany_, XLVIII., p. 312.

Peridium double; the outer gelatinous, the inner membranaceous;
capillitium intricate, limeless.

COLLODERMA OCULATUM (_Lipp._) _G. Lister._

1894. _Didymium oculatum_ Lipp., _Verh. Zo-Bot. Ges. Wien_, XLIV.,
p. 74.
1910. _Colloderma oculatum_ (Lipp.) G. List., _Jour. Bot._, XLVIII.,
p. 312.

Sporangia gregarious, globose, or sub-globose, sessile or
short-stipitate, olivaceous or purplish-brown, smooth and shining, the
outer peridium gelatinous, thickened by moisture, hyaline; stipe dark
brown; columella none; capillitium as in _Didymium_ purplish-brown,
colorless at the tips; spores spinulose, fuscous, about 12 mu.

New Hampshire, Europe.

Our specimens from the late Dr. W. G. Farlow who collected it in New
Hampshire. Swollen by immersion in water the sporangia take on an
eye-like appearance, oculate, etc.

=EXTRA-LIMITAL=

PHYSARINA _von Hoehnel._

1909. _Physarina_ v