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. STEMONITIS HERBATICA Pk. PLATE XVI., Figs. 14, 14 _a_, 14 _b_. 1874. _Stemonitis herbatica_ Peck, _Rep. N. Y. Mus._, XXVI., p. 75. 1899. _Stemonitis axifera_ (Bull.) Macbr., _N. A. S._, p. 120, in part. 1911. _Stemonitis herbatica_ Pk., Lister, _Mycetozoa_, p. 148. Sporangia clustered, in scattered tufts, cylindric, obtuse, pallid ferruginous, stipitate or sometimes nearly sessile; stipe fuscous or jet-black, only slightly expanded below, much shorter than the columella; hypothallus scanty or none; columella lessening upward, sometimes attaining the apex of the sporangium, sometimes dissolved in capillitial threads some distance below; capillitium of rich brown threads forming the usual inner network of medium density, with many wide expanded nodes, the surface net made up of delicate, almost colorless threads surrounding small polygonal meshes; spore-mass ferruginous, spores by transmitted light very pale, brownish, minutely warted, 7-9 mu. The plasmodium of this species is variously cited from white to yellow. Probably each report is true, dependent on the relative time of the observation. The low tufts of brown sporangia with short black stipes, borne often as Dr. Peck found them, assembled on living leaves, distinguish this little species. In the former edition this form was tentatively enrolled under _S. axifera_ (Bull.); but see further under that species. Probably widely distributed, but confused with short forms of other species; sometimes also on rotten wood or other substratum; so reported. New York to Iowa; Washington and Oregon. Reported also from Europe. =3. Comatricha= (_Preuss_) _Rost._ 1851. _Comatricha Preuss_, _Linnaea_, XXIV., p. 140. 1873. _Comatricha_ Rostafinski, _Versuch_, p. 7.