mushroom?

can you eat these and are they good

Shaggy Mane. Excellent sautéed in butter. Nothing else looks like shaggy mane mushrooms, so they are very safe. Pick them and eat them the same day. By tomorrow that mushroom will be a gooey black mess.

Yep. What he said. Picked a bagfull at lunchtime at work and when I got them home most were ink globs.