(Headwaters of the Rogue River; three specimens braving the current; two specimens braving the current - photographs © Robert Coffan)
Name: Psathyrella aquatica
Common Name: Rogue mushroom
How it made the Top 10: First report of a mushroom species fruiting underwater.
Reference: Frank, J.L., R.A. Coffan and D. Southworth. 2010. Aquatic gilled mushrooms: Psathyrella fruiting in the Rogue River in southern Oregon. Mycologia 102(1):93-107.
Type Material: Holotype – University of Michigan Fungus Collection (MICH), Ann Arbor, Michigan, USA.
Type Locality: USA, Oregon, Jackson County, north of Prospect.
Etymology: In reference to the aquatic habitat.
Click here to see video of the mushroom.