A widespread, bright red cup fungus, Sarcoscypha coccinea (formerly Peziza epidendra) (family Sarcoscyphaceae), found on decaying wood; also more fully "scarlet cup mushroom".
Origin
Mid 18th century.
Definition of scarlet cup in US English:
scarlet cup
noun
A widespread, bright red cup fungus, Sarcoscypha coccinea (formerly Peziza epidendra) (family Sarcoscyphaceae), found on decaying wood; also more fully "scarlet cup mushroom".