Unidentified fungus

Unidentified fungus

Observation - Unidentified fungus. Description: Unidentified fungus growing in clumps at the base of a tree stump in mixed deciduous woodland.. Can I have help with this please? Cap olive green, darker at centre, a bit slimy, 9cm in a large specimen. Stipe yellowish, 21 cm in large specimen, with a

Unidentified fungus growing in clumps at the base of a tree stump in mixed deciduous woodland.. Can I have help with this please?
Cap olive green, darker at centre, a bit slimy, 9cm in a large specimen.
Stipe yellowish, 21 cm in large specimen, with a ring
Gills pale yellow, decumbent