Appearance
Cap: 1-4 cm; shell-shaped or petal-shaped; somewhat flabby; smooth or finely velvety (towards the point of attachment) in all stages of development; the margin often slightly lined; white, becoming brownish to pale cinnamon brown; hygrophanous.Gills: Close or crowded; whitish, becoming brownish in maturity.
Stem: Absent. Rarely, when conditions force the mushroom to grow straight upwards rather than in a shelf-like position, the cap may be nearly circular, creating the illusion of a rudimentary "stem" where the mushroom attaches to the wood.
Flesh: Soft; thin.
References:
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