Rostafinski, Monograph, pp. 105, 106, rejects Berkeley's specific name, flavicomum, because it refers to the somewhat indefinite, characteristic color. As this is no valid reason for change, we have restored Berkeley's specific name, which by general consent has priority. N. A. F., 3299.
Not common. New Jersey, Ohio, South Carolina, Iowa.
52. Physarum bethelii (Macbr.) Lister.
- 1899. Tilmadoche bethelii, Macbr., Exempl. ad Herbaria.
- 1911. Physarum gyrosum Rost., List., Mycetozoa, 2nd ed., p. 75.
Sporangia scattered, globose, umbilicate below, .5–1 mm. in diameter, iridescent blue, or sometimes tinged by the presence of delicate pale yellow calcareous scales, stipitate; stipe rather short, black or dark brown, equal; capillitium dense, radiating from the black, slightly intrusive summit of the stipe, and from the base of the peridium ascending; the nodules not numerous, elongate, branching betimes, pale yellow; spores minutely roughened, 10–12 µ.
This beautiful delicately tinted little species is clearly tilmadochoid in the Friesian sense. The capillitium persists after the fall of the upper filmy peridium, adherent below to the persisting peridial base. Collected thus far twice only; by Professor Bethel and by Professor Sturgis, Colorado.
SECTION 2
Tilmadoche Fries
53. Physarum gyrosum (Rost.) Jahn.
- 1875. Physarum gyrosum Rost., Mon., p. 111.
- 1902. Physarum gyrosum Rost., Jahn, Ber. Deutsch. Bot. Ges., XX., p. 272, t. XIII.
- 1911. Physarum gyrosum Rost., List., Mycetozoa, 2nd ed., p. 75.