 The cap is initially somewhat conical with margins rolled inward , and expands to become bell @-@ shaped or broadly convex in maturity , reaching a diameter of 1 – 3 cm ( 0 @.@ 4 – 1 @.@ 2 in ) . The cap sometimes has an umbo , which is rounded to conical . The color of the cap ranges from dull to bright orange when young , to yellowish @-@ brown ( tawny ) in maturity . It is hygrophanous , and the color fades to yellowish @-@ buff . The cap surface is smooth and polished , and somewhat translucent , such that the radial gill lines can be seen on the margin . The gills are closely spaced , and have two tiers of interspersed lamellulae ( short gills ) . Gills have an adnate to adnexed attachment to the stem , although the gills tend to secede ( separate from the stem ) in maturity . They are initially pallid to whitish in color before turning brownish when the spores mature . The smooth stem measures 3 – 5 @.@ 7 cm ( 1 @.@ 2 – 2 @.@ 2 in ) long by 1 – 2 mm thick . Yellowish to pale orange near the top and dark reddish brown below , it has tawny mycelium at the base . In maturity the stem turns black from the base upward . In 1907 , Morgan noted the stipe to be remarkably similar to that of Marasmius cohaerens . The mushroom flesh has an odor that ranges from indistinct to somewhat of geraniums , while its taste is indistinct to faintly bitter . The edibility of the mushroom is unknown . 
