Scientific name: Micromphale foetidum (Fries) Singer
Derivation of name: Foetid- means "fetid" or "stinking" and
refers to the foul odor of this mushroom.
Synonyms: Marasmius foetidus
Common name(s): Fetid Marasmius.
Occurrence on wood substrate: Saprobic; clustered on sticks
and fallen branches of deciduous trees; July through September.
Dimensions: Caps 1-3 cm wide; stipes 2-3 cm long and 1-1.5
Cap: Usually with a reddish-brown, sunken navel-like center
and reddish-brown striations extending to the pleated margin;
color fading to tan with age.
Gills: Attached to a collar; yellowish at first, becoming reddish-
Spore print: White.
Stipe: Brownish; velvety; cottony at the base.
Comments: Miller describes the odor as that of sour cabbage
and the taste as strongly disagreeable.
More information at RogersMushrooms.com:
Striate caps and pinkish-buff gills of fetid Marasmius.
Photo © Steve Nelsen.
Figure 2. Gills are attached to a collar. Photo © Steve