Physarum bethelii T. Macbr. ex G. Lister 1911

Physarum bethelii Macbr. ; G. Lister in Lister,
Mycet. ed. 2. 57. 1911.
Physarum viride var. Bethelii Sturgis, Colo. Coll. Publ. Sci. 12: 439. 1913.
Sporangia gregarious, stipitate, depressed-globose, slightly umbilicate below, 0.6-0.8 mm.
in diameter; peridium iridescent blue, nearly limeless or covered with pale yellow, calcareous
scales, the lower portion remaining as a cup; stalk 0.5-1 mm. in length, black or dark brown,
furrowed, nearly equal; capillitium dense, radiating from the black, slightly intrusive summit
of the stalk; nodes not numerous, pale yellow, fusiform, occasionally branched; spores bright
violet-brown, distinctly warted, 9-10 ju in diameter.
Type locauty: Tolland, Colorado.
Habitat: Dead wood.
Distribution : Colorado, Washington (state) ; Roumania.