shes, the peridial processes few; spore-mass bright
ferruginous, spores by transmitted light pale, almost colorless, smooth,
4-5 mu.

The species as thus constituted includes forms varying in size from
2.5-3 mm. only. The common form heretofore known everywhere in America
as _S. ferruginea_ is from 10-15 mm. high. The _type_ to which the
specific name _S. smithii_ was originally applied is 2.5 mm. high and
rejoices in smooth, almost colorless spores, 4-5 mu.

The plasmodium in the case of the species now considered is as concerns
the _type_, of course, unknown. In one or two gatherings referred here
the color of the plasmodium was noted greenish-yellow. This has the look
of _S. flavogenita_; but small spores and delicate make-up take it the
other way. Miss Lister makes it varietal to No. 12, next following.

12. STEMONITIS AXIFERA (_Bull._) _Macbr._

PLATE VI., 5, 5 _a_, and 5 _b_.

1791. _Trichia axifera ferruginea_ Bull., _Champ. de la Fr._, p. 118,
tab. 477.
1818. _Stemonitis ferruginea_ Ehr., _Syl. Myc. Berol._, p. 20;
et auct. Europ. ex parte; Americ., non.
1894. _Stemonitis ferruginea_ Ehr., List., _Mycetozoa_, p. 115,
in part.
1899. _Stemonitis axifera_ (Bull.) Macbr., _N. A. S._, p. 120,
in part.
1911. _Stemonitis ferruginea_ Ehr., Lister, _Mycetozoa, 2nd ed._

Sporangia terete, acuminate, fasciculate small in dense clusters,
distinctly ferruginous in color, stipitate, from 10-15 mm. in height;
the stipe black one-third to one-half the total height, not shining or
polished; columella evenly branching, dissipated before reaching the
acuminate apex; capillitium-branches clear brown anastomosing and
dividing more or less to bear the superficial fine-meshed net; spores
pallid, faintly ferruginous, smooth or nearly so, 5-6 mu.

This would seem to be the common _ferruginous_ species of the world.
Doubtless Micheli had the thing before him when he drew Tab. 94,
_clathroidastrum_, Hoffman and Jacquin seem to have recognized the form.
To be sure, under the present plasmodic limitations we cannot be quite
certain about these references. Not until 1791 does anyone write down a
particular species as marked by a white plasmodium, and distinguish it
from other similar fructifications having similar origin. Bulliard, _l.
c._, does this, discriminating between _T. axifera ferruginea_ and _C.
typhoides_; see under the last-named species. Youthful Ehrenberg, in h