ps not lacking; the spores by
transmitted light distinctly brown, the epispore a beautiful
reticulation, a dozen or more cells to the hemisphere, 10-12 mu.

This is entered sometimes as a variety of _S. fusca_ to which species
relationship would seem remote. The differences lie in form, color and
structure. The spores alone are distinctive; there are none such, so
far, none just like them, elsewhere in the genus. Torrend and Lister
both enter the form as varietal; why not set it out, and save questions?
The habitat approaches that of _Amaurochaete_, but the sporangia are
distinct.

For our specimens we are indebted to the kindness of Dr. Roland Thaxter.
The specimens were taken in a half-dry marsh, near Cambridge.

Material from Toronto sent by Professor Faull is also provisionally here
referred. The form has netted spores, but they are not quite the same.
The structure besides is more that of an amaurochaete; it has the
peculiar basal webs and band-like stipes at base, stipes that never rise
from horizontal to perpendicular and characterize _Reticularia_ and
especially _Brefeldia_ as well as the usual amaurochaete. See Plate XX.,
Figs. 9, 9_a_, 9_b_.

3. STEMONITIS FUSCA (_Roth_) _Rost._

PLATE VI., Figs. 4, 4 _a_, 4 _b_

1787. _Stemonitis fusca_ Roth, _Roem. Mag. Bot._, I., p. 26.
1875. _Stemonitis fusca_ (Roth) Rost., _Mon._, p. 193.
1892. _Stemonitis fusca_ Rost., Massee, _Mon._, p. 72.
1895. _Stemonitis fusca_ Roth, List., _Mycetozoa_, p. 110.
1899. _Stemonitis fusca_ (Roth) Rost., Macbr., _N. A. S._, p. 115.
1899. _Stemonitis maxima_ Schw., Macbr., _N. A. S._, p. 116.

Sporangia tufted, generally in small clusters 6-8 mm., the individual
sporangia slender, cylindric, blue-black or fuscous, becoming pallid as
the spores are lost, stipitate; stipe short, about one-fourth the total
height, black, shining; hypothallus scanty, but common to all the
sporangia; columella prominent, attaining almost the apex of the
sporangium, freely branching to support the capillitial net; capillitium
of slender dusky threads, which freely anastomose to form a dense
interior network, and outwardly at length combine to form a
close-meshed net; spores pale, dusky violet, usually beautifully
spinulose-reticulate, but sometimes warted or spinulose only, or nearly
smooth, 7-7.5 mu.

As here set out the description is intended to include _S. maxima_ Schw.
of the former edition. Rostafinski, Mon. _l. c._, describes _S