Appearance
Ecology: Saprobic on needle duff of eastern white pine and other conifers, and sometimes found growing from hardwoods leaf litter; growing gregariously; summer and fall; apparently widely distributed in eastern North America.Cap: 0.5-2 cm; at first bell-shaped or convex, often with a central nipple; later broadly bell-shaped, convex, or nearly flat; pleated; smooth or minutely roughened; dry; pink or pinkish brown (occasionally brownish orange), fading with age but retaining a darker center.
Gills: Attached to the stem or free from it; rarely attached by means of a "collar"; distant or nearly so; white or pinkish.
Stem: 2-6 cm long; less than 1 mm thick; equal; dry; wiry; often curved; pale pinkish at the extreme apex, darkening downwards by degrees to a reddish brown or black base; smooth; basal mycelium white.
Flesh: Thin; insubstantial.
Odor and Taste: Taste mild, slightly bitter, or radishlike; odor not distinctive.
Spore Print: White.
Microscopic Features: Spores 11-15 x 3-4 µ; smooth; somewhat irregular but more or less spindle-shaped; often with one end pointier than the other. Pleurocystidia variously shaped (cylindric to fusoid-ventricose); hyaline; to about 60 x 10 µ. Cheilocystidia as broom cells to about 25 x 10 µ; dextrinoid. Pileipellis a hymeniform layer of broom cells.
References:
Some text fragments are auto parsed from Wikipedia.
http://www.mushroomexpert.com/marasmius_pulcherripes.html