Agaricus auricolor is a species of mushroom that grows in fields, meadows, and along roadsides. In East and Central Texas, it typically fruits from May to October, producing medium-sized caps that range from reddish-brown to golden brown, often with a metallic sheen. The stems are usually slender and cylindrical, with a ring or annulus present. This species is common in the region, particularly in areas with rich soil and abundant moisture, such as near streams, rivers, and lakes.
Gills of Agaricus auricolor(?) mushroom near a small creek on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, June 30, 2018
Lone Star Hiking Trail, Montgomery, TX 77356, USA
Cap of Agaricus auricolor(?) mushroom on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, June 30, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Agaricus auricolor mushroom in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 7, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Dissected Agaricus auricolor mushroom in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 7, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Agaricus auricolor mushrooms on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 13, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Agaricus auricolor mushrooms in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 13, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Agaricus auricolor and chestnut bolete mushrooms Gyroporus smithii (formerly G. castaneus) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 13, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Dissected Agaricus auricolor mushroom on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 13, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Agaricus auricolor mushroom on floodplain on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 13, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Gills of Agaricus auricolor mushroom on floodplain on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 13, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Agaricus auricolor mushrooms in Bee Creek Park. College Station, Texas, June 10, 20191601 Valley View Dr, College Station, TX 77840, USA
Dissected Agaricus auricolor mushrooms in Bee Creek Park. College Station, Texas, June 10, 20191601 Valley View Dr, College Station, TX 77840, USA
Mature Agaricus auricolor mushrooms on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, June 27, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Agaricus auricolor mushrooms on Kiwanis Nature Trail. College Station, Texas, May 25, 20201108 Ashburn Ave, College Station, TX 77840, USA
Underside of Agaricus auricolor mushrooms on Kiwanis Nature Trail. College Station, Texas, May 25, 20201108 Ashburn Ave, College Station, TX 77840, USA
Dissected Agaricus auricolor mushrooms on Kiwanis Nature Trail. College Station, Texas, May 25, 20201108 Ashburn Ave, College Station, TX 77840, USA
Young mushroom Agaricus auricolor on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, August 27, 2022Lone Star Hiking Trail, San Jacinto County, Texas, 77328, United States
Underside of mushroom Agaricus auricolor on Forest Service Rd 231, on gravel side, with needles, leaves, without grass, on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023Forest Service Rd 231, Montgomery County, Texas, United States
Cap of mushroom Agaricus auricolor on Forest Service Rd 231 on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023Forest Service Rd 231, Montgomery County, Texas, United States
Cross section of mushroom Agaricus auricolor on Forest Service Rd 231 on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023Forest Service Rd 231, Montgomery County, Texas, United States
Spores and basidia at low magnification of mushroom Agaricus auricolor from Forest Service Rd 231 collected Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
Spores and basidia of mushroom Agaricus auricolor from Forest Service Rd 231 collected Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
Spores (in KOH) of mushroom Agaricus auricolor (spore print dark-brown) on Forest Service Rd 231 collected Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
Spore size 4.6 - 5 × 3.6 - 3.8 µm, length to width ratio Q = 1.3 - 1.38.Observations of Agaricus auricolor in East and Central Texas reveal its presence in various habitats, including pine forests and floodplains. The mushroom was found on the Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, on multiple occasions between June 2018 and July 2019. It was also spotted in Bee Creek Park, College Station, and Kiwanis Nature Trail, College Station, in 2019 and 2020, respectively. In 2022 and 2023, the mushroom was observed on Winters Bayou Trail and Forest Service Rd 231 in Sam Houston National Forest. The observations include detailed descriptions of the mushroom's cap, gills, and spores, with some specimens being dissected for closer examination. The findings suggest that Agaricus auricolor is widely distributed in East and Central Texas, fruiting in a variety of environments during different times of the year.
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