Fungi for ID, please

Fungi for ID, please

Observation - Fungi for ID, please. Description: Fungi growing in tight groups in rough grass in garden. Total height 10-15cm. Ragged ring round stipe. Spore print dark brown. Can anyone give an ID, please?

Fungi growing in tight groups in rough grass in garden. Total height 10-15cm. Ragged ring round stipe. Spore print dark brown. Can anyone give an ID, please?