McLaughlin, D.J. 1999. A search for two rare, endemic Minnesota mushroom species Final report submitted to the Natural Heritage and Nongame Research Program, Minnesota Department of Natural Resources. 3 pp.
A search was made in May through June for two mushroom species, endemic to Minnesota, that before last August, had not been reported since about 1970. The search was focused on Nerstrand Woods State Park where the two mushrooms were found last August. Neither Psathyrella rhodospora or Psathyrella cystidiosa were found this spring. A search for these species during the summer is needed to determine their fruiting patterns.