Leptoderma iridescens G. Lister 1913

Leptoderma iridescens G. Lister, Jour. Bot. 51: 1. 1913
Sporangia scattered or loosely clustered, subglobose, sessile or rarely short-stalked, grayishpurple, glossy, iridescent, 0.5-0.8 mm. in diameter; peridium nearly hyaline above, purplish below, where it is thickened with granular material and often includes crystalline flakes of lime 2-15 p. in diameter; stalk when present stout, dark, spreading below into the dark hypothallus; columella dark and convex, or lacking; capillitium a persistent network of flexuous, dark purple threads' radiating from the base of the sporangium, the tips and bases of the threads colorless or pale, the bases often expanded or tubular and enclosing granular matter; spores black in mass, purplish-gray by transmitted light, spinulose, 10-12 l in diameter; Plasmodium gray or drab.
Type locality : England.
Habitat; Dead leaves, stems and wood.
Distribution: Colorado; Europe.