This fungus is genus laccaria. It was found under quaking aspen, they have a mycorrhizal relationship. They were small in numerous clusters. They're primary succession, meaning this old landfill is healing itself back to a normal ecosystem. These little fungi indicate such.
Found in both young and mature stages, lay 24 hours from youth to death. They are edible
The fungal order Agaricales, also known as gilled mushrooms (for their distinctive gills), or euagarics, contains some of the most familiar types of mushrooms. The order has 33 families, 413 genera, and 13233 species. They range from the ubiquitous common mushroom to the deadly destroying angel and the hallucinogenic fly agaric to the bioluminescent jack-o-lantern mushroom.
