Brown cap with pale pink gills. Gills not attached to stipe. Found growing on a fallen hardwood branch floating in a pond.
According to Mushrooms Demystified, pink spores and free gills are indicative of Pluteaceae. First photo shows mushrooms in habitat, with pine branches and woodchips visible. The specimen in front shows the free gills.
Second photo shows specimens of varying ages. Note the free gills in cross-section and conical young cap.
Growing on dead wood, oak dead wood.
Pluteus cervinus, also known as Pluteus atricapillus and commonly known as the deer shield or the deer or fawn mushroom, is a mushroom that belongs to the large genus Pluteus. It is found on rotten logs, roots and tree stumps and is widely distributed. It can also grow on sawdust and other wood waste. Being very variable in appearance, it has been divided into several varieties or subspecies, some of which are sometimes considered species in...