This little species, as it comes to us, is grey, very uneven in size, .2–.5 mm. and generally irregular in form and habit, perhaps scarce mature. The capillitium is white, physaroid. The spores furnish the distinguishing character. Sometimes globose, about 9–10. They are most of them definitely and permanently affected in shape by the fact of cluster-association, narrower in the direction of the cluster center. The indications are that these may become globose with maturity.

Colorado,—Bethel; Scotland.

3. Badhamia decipiens (Curtis) Berk.

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 µ.

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.

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 µ.