Identified with the help of Seek by INaturalist
What I’ve learned so far.
Botanical name: Coprinopsis atramentaria
Ecological role: Saprobic, which means they grow on dead or decaying wood and speed up decomposition, which helps recycle nutrients back to the soil food web.
Bryce Kendrick. (n.d.). Saprobic fungi. Eniscuola. Retrieved October 21, 2021, from http://www.eniscuola.net/en/argomento/fungi/fungi-knowledge/saprobic-fungi/.
I took the photos at different stages of growth.