Synonym: Venenarius rhoadsii.
Amanita rhoadsii is a species of mushroom in the genus Amanita, characterized by its medium to large size, grayish-brown cap, and white gills. In East and Central Texas, it typically fruits in late summer to early fall, often associated with oak and pine trees. The cap is 4-8 cm in diameter, convex to flat, and covered with small, grayish-brown warts. The stem is 6-12 cm tall, white to light brown, and has a bulbous base. Amanita rhoadsii is considered rare in the region, but can be found in wooded areas, particularly in the Edwards Plateau and Piney Woods ecoregions of East and Central Texas.
Amanita rhoadsii(?) mushroom in a pine forest on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 7, 2018
Lone Star Hiking Trail, Montgomery, TX 77356, USA
Side view of Amanita rhoadsii(?) 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 Amanita rhoadsii(?) 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
Button of a young mushroom Amanita rhoadsii(?) 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
Fleshy white mushroom Amanita rhoadsii(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 21, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Side view of Amanita rhoadsii(?) mushroom on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 21, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Gills of Amanita rhoadsii(?) mushroom on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 21, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Dissected Amanita rhoadsii(?) mushroom on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 21, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Amanita rhoadsii(?) mushroom on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, September 15, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Amanita rhoadsii(?) mushroom on soil disturbed by hogs on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 1, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Gills of a mushroom Amanita rhoadsii(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 1, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Dissected mushroom Amanita rhoadsii(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 1, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Gills of a mushroom Amanita rhoadsii(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 7, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Cap of a mushroom Amanita rhoadsii(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 7, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Mushroom Amanita rhoadsii on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, July 23, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USA
Underside of a mushroom Amanita rhoadsii on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, July 23, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USA
Close-up of a mushroom Amanita rhoadsii on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, July 23, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USA
Gills of a mushroom Amanita rhoadsii on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, July 23, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USA
Cross section of a mushroom Amanita rhoadsii on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, July 23, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USAObservations of the fungus Amanita rhoadsii in East and Central Texas reveal its presence in pine forests, particularly in the Sam Houston National Forest near Huntsville. The mushroom was found on various trails, including Caney Creek section of Lone Star Hiking Trail and Little Lake Creek Loop Trail. It was observed growing in soil disturbed by hogs and in areas with minimal human disturbance. The mushrooms were typically white or fleshy white, with some specimens showing a cap and gills. Dissections revealed the internal structure of the mushroom, including the gills and stem. Observations were made over several years, from 2018 to 2021, during the summer months, suggesting that Amanita rhoadsii may be a seasonal species in this region. The mushrooms were often found in association with pine trees, indicating a possible symbiotic relationship.
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