Extract from Wikipedia article: Agaricus campestris is a widely eaten gilled mushroom closely related to the cultivated button mushroom Agaricus bisporus. It is commonly known as the field mushroom or, in North America, meadow mushroom.
Meadow mushroom Agaricus campestris taken from the university golf course on Texas Avenue. College Station, Texas, February 15, 2018
Meadow mushroom Agaricus campestris on the university golf course on Texas Avenue. College Station, Texas, February 17, 2018 1055 TX-6BUS, College Station, TX 77840, USA
Meadow mushrooms (Agaricus campestris) on the university golf course at Texas Avenue. College Station, Texas, February 28, 2018 1055 TX-6BUS, College Station, TX 77840, USA
Meadow mushrooms (Agaricus campestris) in Hensel Park. College Station, Texas, February 28, 2018 Hensel Park DriveWay, College Station, TX 77840, USA
Meadow mushrooms (Agaricus campestris) on a lawn of the university golf course at Texas Avenue. College Station, Texas, May 22, 2018 1055 TX-6BUS, College Station, TX 77840, USA
Young meadow mushrooms (Agaricus campestris) in Wolf Pen Creek Park. College Station, Texas, May 1, 2019
Meadow mushrooms (Agaricus campestris) in Wolf Pen Creek Park. College Station, Texas, May 1, 2019
Meadow mushrooms Agaricus campestris on a lawn in Bee Creek Park. College Station, Texas, June 10, 2019 2003 Longmire Ct, College Station, TX 77840, USA
Meadow mushrooms (Agaricus campestris) on a lawn near New Main Drive on campus of Texas A and M University. College Station, Texas, January 17, 2020 New Main Dr, College Station, TX 77840, USA
Dissected meadow mushrooms (Agaricus campestris) on a lawn near New Main Drive on campus of Texas A and M University. College Station, Texas, January 17, 2020 New Main Dr, College Station, TX 77840, USA
Meadow mushrooms Agaricus campestris on New Main Drive on campus of Texas A and M University. College Station, Texas, March 10, 2020 New Main Dr, College Station, TX 77840, USA
Meadow mushrooms (Agaricus campestris) in Bee Creek Park. College Station, Texas, March 27, 2020 Bee Creek Park, 1900 Anderson St, College Station, TX 77840, USA
Underside of meadow mushrooms (Agaricus campestris) in Bee Creek Park. College Station, Texas, March 27, 2020 Bee Creek Park, 1900 Anderson St, College Station, TX 77840, USA
Dissected meadow mushrooms (Agaricus campestris) in Bee Creek Park. College Station, Texas, March 27, 2020 Bee Creek Park, 1900 Anderson St, College Station, TX 77840, USA
Meadow mushrooms (Agaricus campestris) in Hensel Park. College Station, Texas, May 29, 2020 Hensel Park, College Ave, College Station, TX 77840, USA
Icy neadow mushroom (Agaricus campestris) on a golf course on campus of Texas A and M University. College Station, Texas, February 14, 2021 1037 Texas Ave, College Station, TX 77840, USA
Field mushrooms (Agaricus campestris) on a lawn in Bee Creek Park. College Station, Texas, March 25, 2022 Bee Creek Drive, Bee Creek, College Station, Brazos County, Texas, 77840, United States
Underside of field mushrooms (Agaricus campestris) on a lawn in Bee Creek Park. College Station, Texas, March 25, 2022 Bee Creek Drive, Bee Creek, College Station, Brazos County, Texas, 77840, United States
Cross section of a field mushroom (Agaricus campestris) on a lawn in Bee Creek Park. College Station, Texas, March 25, 2022 Bee Creek Drive, Bee Creek, College Station, Brazos County, Texas, 77840, United States
Basidia of field mushrooms (Agaricus campestris) at low magnification, collected in Bee Creek Park. College Station, Texas, March 25, 2022
Basidioles of field mushrooms (Agaricus campestris), collected in Bee Creek Park. College Station, Texas, March 25, 2022
Basidia of field mushrooms (Agaricus campestris), collected in Bee Creek Park. College Station, Texas, March 25, 2022
Basidia and a spore of field mushrooms (Agaricus campestris), collected in Bee Creek Park. College Station, Texas, March 25, 2022
Spores of field mushrooms (Agaricus campestris), collected in Bee Creek Park. College Station, Texas, March 25, 2022
Gills of meadow mushrooms (Agaricus campestris) on a lawn (spore print almost black) in Bee Creek Park. College Station, Texas, February 8, 2023 Bee Creek Drive, Bee Creek, College Station, Brazos County, Texas, 77840, United States
Underside of meadow mushrooms (Agaricus campestris) on a lawn in Bee Creek Park. College Station, Texas, February 8, 2023 Bee Creek Drive, Bee Creek, College Station, Brazos County, Texas, 77840, United States
Dissected meadow mushrooms (Agaricus campestris) on a lawn in Bee Creek Park. College Station, Texas, February 8, 2023 Bee Creek Drive, Bee Creek, College Station, Brazos County, Texas, 77840, United States
Spores (in KOH) of meadow mushrooms (Agaricus campestris) collected in Bee Creek Park. College Station, Texas, February 8, 2023 Spore size 8.4 - 9.3 × 6.21 - 6.7 µm, length to width ratio Q = 1.3 - 1.4.