The North American Slime-Moulds / A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species

by Thomas H. Macbride

Fig. 4 b. A single spore, × 1200.

Craterium minutum (Leers) Fr., [p. 107.]

Fig. 5. Sporangia, the stalks unusually long, × 15.

Physarum penetrale Rex, [p. 70.]

Fig. 6. A group of sporangia; the calcareous crust has fallen in all.

Fig. 6 a. A single sporangia, enlarged to show columella, × 20.

Physarum nicaraguense Macbr., [p. 83.]

Fig. 7. A group of sporangia, × 15.

Fig. 7 a. Capillitium, strongly calcareous, × 800.

Fig. 7 b. A single spore, × 1200.