Synonym: Fungus diminutivus.
Common name: Diminutive Agaricus.
Agaricus diminutivus is a small to medium-sized mushroom with a bell-shaped to convex cap that ranges from 2-6 cm in diameter, typically light brown to tan in color. The gills are free from the stem and pinkish-brown at maturity. The stem is slender, 3-7 cm long, and 0.5-1.5 cm thick. In East and Central Texas, Agaricus diminutivus has been found growing in fields, meadows, and along roadsides, often in association with grasses and other herbaceous vegetation. It typically fruits from May to October, with peak activity during the summer months.
Agaricus diminutivus and Gymnopus mushrooms on a lawn in Bee Creek Park. College Station, Texas, September 12, 2018
1899 Anderson St, College Station, TX 77840, USA
Group of Agaricus diminutivus mushrooms on a lawn in Bee Creek Park. College Station, Texas, September 12, 20181899 Anderson St, College Station, TX 77840, USA
Agaricus diminutivus mushrooms near small oaks in prairie area in Lick Creek Park. College Station, Texas, October 5, 20182000 Campbell Ct, College Station, TX 77845, USA
Agaricus diminutivus mushrooms on Post Oak Trail in Lick Creek Park. College Station, Texas, October 5, 20182000 Campbell Ct, College Station, TX 77845, USA
Mushroom Agaricus diminutivus together with a puffball in Lick Creek Park. College Station, Texas, August 8, 202014802 Rock Prairie Rd, College Station, TX 77845, USA
Underside of mushroom Agaricus diminutivus together with a puffball in Lick Creek Park. College Station, Texas, August 8, 202014802 Rock Prairie Rd, College Station, TX 77845, USAObservations of Agaricus diminutivus in East and Central Texas reveal its presence in various locations. On September 12, 2018, the fungus was found on a lawn in Bee Creek Park, College Station, alongside Gymnopus mushrooms. It was also observed in groups on the same lawn. Later, on October 5, 2018, it was spotted near small oaks in a prairie area and on Post Oak Trail in Lick Creek Park. In August 2020, Agaricus diminutivus was found with a puffball in Lick Creek Park, with observations including both the top and underside of the mushroom. These sightings suggest that Agaricus diminutivus can thrive in different environments within East and Central Texas, including lawns and wooded areas, and can coexist with other fungal species. The fungus appears to be relatively common in the region, particularly in parks and natural areas around College Station.
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