Ink cap?? What is it?

Ink cap??  What is it?

Observation - Ink cap?? What is it? - UK and Ireland. Description: This fungus was found as s single specimen in damp grassland. The cap is 7 cm across. The spore print is black and gills very crowded. The last photograph is of a smaller specimen growing as part of a clump about one yard away. The cap is 3 cm in diame

This fungus was found as s single specimen in damp grassland. The cap is 7 cm across. The spore print is black and gills very crowded. The last photograph is of a smaller specimen growing as part of a clump about one yard away. The cap is 3 cm in diameter, I assume this to be an immature example of the same fungus