._

PLATE XIII., Fig. 3

1897. _Stemonitis pallida_ Wing., _N. A. F._, Ell. and Ev., No. 3498.
1899. _Stemonitis pallida_ Wing., Macbr., _N. A. S._, p. 123.
1911. _Stemonitis pallida_ Wing., List., _Mycetozoa, 2nd ed._, p. 149.

Sporangia gregarious, or somewhat clustered, erect, cylindric obtuse,
short, blackish brown, rubescent, becoming pallid, stipitate; stipe
short, black, polished, rising from a thin, brown, or iridescent
hypothallus; columella percurrent, ceasing abruptly at the apex;
capillitium filling the interior with abundant branches which form at
the surface a close-meshed net, little developed above, making the apex
very blunt; spores in mass, dark brown, by transmitted light dusky,
nearly smooth, 7.5 mu.

This species is well recognized at sight, among the fuscous forms, by
its scattered, erect habit. In color it is not unlike _S. fusca_, but
has an added reddish tinge. In form it is peculiar by virtue of the
blunt rounded apex which seems to be a constant character. The spores
under moderate lens are perfectly smooth, under the 1-12 they present
very delicate low scattered papillae.

Rare; eastern part of United States.

15. STEMONITIS CAROLINENSIS _Macbr._

PLATE XIII., Fig. 5.

1894. _Stemonitis tenerrima_ Berk. & C., Morg., _Jour. Cin. Soc._,
p. 53.
1899. _Stemonitis carolinensis_ Macbr., _nom. nov._, _N. A. S._,
p. 152.
1911. _Stemonitis pallida_ Wing., Lister, _Mycetozoa, 2nd ed._,
p. 149.

Sporangia tufted in scattered clusters, small, slender, cylindric but
tapering from the apex, at first ferruginous then ashen or purplish,
stipitate; the stipe short, black and shining, one-fourth the total
height or less, even; hypothallus well developed, black or very dark
brown; columella black, gradually diminishing, at length dissipated some
distance below the clavate or acuminate apex of the sporangium;
capillitium dense, the inner of many, scarcely expanded, pallid, freely
anastomosing branches, the outer a net of very small meshes, often less
than the spores, 3-15 mu, peridial processes imperceptible; spore-mass
pale ferruginous, spores by transmitted light pale violaceous brown,
smooth, 6-7 mu.

Very closely related to the preceding, but recognizable by its
proportionately much more slender, taller, acuminate sporangia, paler,
and denser capillitium and the remarkably close-meshed net.

Not uncommon south: Kentucky, Alabama.

16. STEM