First person to use this name on MO: Thomas Laxton
Name: Didymium melanospermum
Author: (Alb. & Schwein.) Fr. & Palmquist
Citation: Symbolae Gasteromycorum 3: 19 (1818) [MB#181562]
#1. Sporocarps short-stalked, gregarious, up to 1 mm total height. Sporothecae subglobose or slightly flattened, deeply umbilicate below, 0.5-1 mm diam., white. Hypothallus dark, inconspicuous. Stalk dark brown or black, stout, short, rarely apparently absent when completely hidden by the deep umbilicus. Peridium firm, brown, frosted with crystals. Columella large, hemispherical brown, calcareous. Capillitium of wavy threads, pale or brown, little branched, some thin, some much thicker, often with dark nodular swellings. Spore-mass black. Spores purplish-brown, 10-14 µm diam., warted. Plasmodium colourless or grey. On leaf and twig litter, especially of conifers.
Taken from: http://www.discoverlife.org/...
#2. SPOROCARPS: Total height 0.5 to 1 mm., gregarious, subglobose or hemispherical, deeply umbilicate beneath, 0.7 to 1 mm. diam., stalked or sessile, often confluent, and occasionally forming flattened plasmodiocarps, white or gray; sporangial wall firm, clothed with stellate crystals of lime.
STALK: cylindrical from a broad base, striate, dark brown, occasionally rufous or partly so, 0.2 to 0.7 mm. long, 0.05 to 0.2 mm. thick, opaque and granular from enclosed refuse matter, sometimes containing crystalline nodules of lime.
COLUMELLA: large, hemispherical, umbilicate, dark brown, rarely whitish, chambered, containing irregular nodules of lime.
CAPILLITIUM: of stout, sparingly branched or simple, flexuose threads, colorless or purplish brown, often showing dark, calyciform thickenings.
SPORES: Dark purplish brown or purplish gray, with thick sporewalls, nearly smooth or spinose, 9-12 ;µm diam.
PLASMODIUM: Colorless or gray.
HABITAT: On dead wood, twigs, and leaves.
Taken from: http://www.hiddenforest.co.nz/...