[22] See also Inaug. Diss., H. Rönn, Schr. d. Naturw. Ver. f. Schl. Holst., XV., Hpt. I., p. 55, 1911.

[23] Inasmuch as there has been decided difference of opinion in reference to this particular species,—all judges readers of the same original description,—it has seemed wise to submit an English translation from the celebrated Monograph loc. cit.

"24. Physarum diderma Rfski.

"Sporangia sessile, globose, adnate by a narrow base, white. Peridium double; the outer thick, strongly calcareous, very distinctly set off from the thin inner one by an air-filled space; the calcareous nodules many, angular, loosely developed within to form a pseudo-columella; spores dark violet, spinescent, 9.2–10 in diameter.

"Opis. This physarum looks extremely like a diderma.

"The sporangia stand either aggregated or bunched together in heaps of five to twelve, adnate to the hypothallus by a narrow base, etc."

Massee, Mon., p. 304, translated this description, but misunderstood what is said of the columella and is inclined to think the author did not know a diderma when he saw one; which is pretentious, to say the least!

[24] See also, after all our trouble, Jour. Bot., LVII., p. 106.

[25] See Fries, Syst. Myc., Vol. III., pp. 130, 137, Rost., Mon., p. 127, and Rep. N. Y. State Mus., XXXI., p. 55.