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Agaricus sp. Mushrooms
Agaricus sp.
37.7883, -122.452
Field Notes
Description:
These large mushrooms were growing in between sidewalk pavers next to an irrigation drain. They looked like portobello mushrooms to me. There was a smaller mushroom that someone removed. Any help with an ID would be great.
Habitat:
Urban house sidewalk landscape pavers.
Notes:
Members of Agaricus are characterized by having a fleshy cap or pileus, from the underside of which grow a number of radiating plates or gills on which are produced the naked spores. They are distinguished from other members of their family, Agaricaceae, by their chocolate-brown spores. Members of Agaricus also have a stem or stipe, which elevates the pileus above the object on which the mushroom grows, or substrate, and a partial veil, which protects the developing gills and later forms a ring or annulus on the stalk.
Wikipedia
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