Wednesday, June 8, 2016

Panaeolus foenisecii - "Lawnmower's Mushroom"

Stages of growth of Panaeolus foenisecii


Gills and stems
Spore print
Name: Panaeolina foenisecii
Spore Color: dark brown
Location Found: all over lawn
Special Characteristics: 

  • hygrophanous - cap tissue changes from a dark brown to a light tan as it loses moisture
  • generally has an unpleasant, earthy smell
  • fragile and hollow stem/stipe

Edibility: Not recommended. Reported to be nutty and unpleasant.
Extra: Very often misidentified as its psychoactive relatives, Panaeolus cinctulus and Panaeolus olivaceus. This is a clear case for why spore prints are so important for identification of any mushroom... While the psychoactive relatives have jet black spores, foenisecii has dark brown spores. (For example, zoom into the spore print taken above. The leftmost spore print shows it best, that there is a brown hue to the spores. A jet black spore print would appear darker than the printed black.) 

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