Sporangia gregarious, depressed-spherical or ovate, sessile, occasionally plasmodiocarpous, dull yellow, roughened by the rather large numerous calcareous scales; columella none; capillitium dull orange, strongly calcareous, only slightly widened at the nodes; spore-mass black; spores pale violet, minutely spinulose, free, 10-12 mu. Among badhamias this and the next species are at once distinguished by the color. If the brief description (_Grev._, II., p. 66) can be regarded as defining anything, this is the same as _P. chrysotrichum_ Berk. & C. It resembles somewhat _P. serpula_ Morg., but differs externally in color and in the surface scales, which are not perceptible in the _Physarum_. The present species also resembles _Cienkowskia reticulata_ (Schw.) Rost., but has a different capillitium. See under that species. Chiefly eastern and American. New England, Pennsylvania, Ohio, South Carolina; reported recently also from Sweden and Germany. 4. BADHAMIA NITENS Berk. 1852. _Badhamia nitens_ Berk., _Trans. Linn. Soc._, XXI., p. 153. 1863. _Badhamia inaurata_ Currey, _Trans. Linn. Soc._, XXIV., p. 156. 1873. _Badhamia nitens_ Berk., Rost., _Mon. App._, p. 3. Sporangia gregarious or closely crowded, globose or depressed-globose, .5-1 mm. in diameter, yellow or greenish yellow, rugulose, sessile; capillitium yellow, forming an open net with occasional thickenings at the nodes; spores clustered, delicately roughened, violaceous-brown, 10-12 mu. This much resembles the preceding species except in the clustered spores, and more commonly aggregate habit. The spores, as usual when clustered, are conspicuously echinulate on the outer side. This did not escape the notice of the author of the species, _op. cit._ Colorado, Oregon. Reported from West Indies, Ceylon, various parts of Europe. 5. BADHAMIA PANICEA (Fries) Rost. 1829. _Physarum paniceum_ Fries, _Syst. Myc._, III., p. 141. 1873. _Badhamia panicea_ (Fr.) Rost., Fuckel, _Sym. Myc. Nachtr._, 2, p. 71. Sporangia gregarious or aggregated in closely compacted clusters, globose or hemispherical, sessile, the peridium thin, transparent, thickly dotted with white calcareous scales; stipe none; columella none, although a pseudo-columella sometimes appears, formed by a more dense development of the capillitium near the centre of the sporangium below; capillitium abundantly developed, quite uniformly thickened, but showing an occasional delicate connecting thread, the nodes also somewhat flattened and enlarged; spore-mass black; spores by transmitted light, bright violaceous-brown, minutely roughened, 10-13 mu. Plasmodium is said to be white.