Extract from Wikipedia article: Tricholomopsis rutilans, known by the unusual but apt common name of Plums and Custard or, less commonly Red-haired agaric, is a species of gilled mushroom found across Europe and North America.
Tricholomopsis rutilans is a species of fungus that grows on decaying logs and stumps, particularly those of coniferous trees. In East and Central Texas, it has been found fruiting from spring to fall, typically in moist, shaded areas with abundant pine or cedar debris. The cap is 2-6 cm in diameter, convex to flat, and reddish-brown to orange-brown with a yellowish or greenish tint, while the gills are yellowish to greenish-yellow and the stalk is slender, cylindrical, and concolorous with the cap. It is considered a relatively common species in the region.
Plums and Custard mushrooms (Tricholomopsis rutilans) on a trunk of a big fallen pine on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, March 10, 2018 LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Plums and Custard mushrooms (Tricholomopsis rutilans) on a rotten pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, March 10, 2018 LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Plums and Custard mushrooms (Tricholomopsis rutilans) on a rotten pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, April 22, 2018 LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Plums and Custard mushrooms (Tricholomopsis rutilans) on a thick wet pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, April 22, 2018 LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Plums and custard mushrooms (Tricholomopsis rutilans) on a large barkless log of a pine on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, May 5, 2018 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Plums and Custard mushrooms (Tricholomopsis rutilans) on a rotting pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 7, 2018 LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Close up of a cap of plums and custard mushroom (Tricholomopsis rutilans) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, April 16, 2019 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Close up of gills of plums and custard mushroom (Tricholomopsis rutilans) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, April 16, 2019 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Plums and Custard mushrooms (Tricholomopsis rutilans) on a rotten pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, June 27, 2019 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Plums and Custard mushrooms (Tricholomopsis rutilans) on a pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 29, 2019 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Group of Plums and Custard mushrooms (Tricholomopsis rutilans) on a mossy pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 29, 2019 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Plums and Custard mushroom (Tricholomopsis rutilans) on a fallen pine on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 15, 2019
Plums and Custard mushrooms (Tricholomopsis rutilans) on a rotting pine log on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, April 16, 2020 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Caps of Plums and Custard mushrooms (Tricholomopsis rutilans) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 18, 2020 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Plums and custard mushrooms (Tricholomopsis rutilans) on a pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 21, 2021 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Plums and custard mushrooms (Tricholomopsis rutilans) on a wet fallen pine on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 28, 2021 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Plums and custard mushrooms (Tricholomopsis rutilans) on a rotting pine on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 7, 2022 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Spores of plums and custard mushrooms (Tricholomopsis rutilans) collected from a pine log in Sam Houston National Forest. Texas, April 7, 2022
Plums and custard mushrooms (Tricholomopsis rutilans) a mossy pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 28, 2022 Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Spores of plums and custard mushrooms (Tricholomopsis rutilans) collected in Sam Houston National Forest near Montgomery. Texas, August 28, 2022
AI-generated summary of observations
Observations of Tricholomopsis rutilans in East and Central Texas reveal that the fungus grows on pine logs and trunks, often in rotting or moist conditions. The mushrooms were found on Caney Creek Trail and North Wilderness Trail in Sam Houston National Forest, near Huntsville and Montgomery, over a period of several years (2018-2022). They were observed growing on fallen pines, rotten pine logs, and mossy pine logs, typically in areas with abundant moisture. The fungus was seen throughout the year, with sightings in March, April, May, June, July, September, October, November, December, and August. Close-up observations revealed details of the mushroom's cap and gills, and spores were collected for further study. Overall, Tricholomopsis rutilans appears to be a common species in the region, thriving in pine-dominated ecosystems with suitable moisture levels.