Extract from Wikipedia article: Tricholoma terreum, commonly known as the grey knight or dirty tricholoma, is a grey-capped mushroom of the large genus Tricholoma. It is found in coniferous woodlands in Europe, and has also been encountered under introduced pine trees in Australia. It is regarded as edible. A 2014 article speculated that it may be poisonous, but Sitta et al. in 2016 published in the same journal a counter article demonstrating the unfounded nature of such speculation.
Grey knight mushrooms (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, January 20, 2021 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Partially dried grey knight mushrooms (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, January 20, 2021 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Side view of grey knight mushrooms (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, January 20, 2021 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Close-up of grey knight mushrooms (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, January 20, 2021 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Underside of grey knight mushrooms (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, January 20, 2021 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Cross section of grey knight mushrooms (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, January 20, 2021 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Mature dried grey knight mushroom (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, January 20, 2021 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Grey knight mushroom (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, February 12, 2023 Lone Star Hiking Trail, Montgomery County, Texas, 77873, United States
Side view of grey knight mushroom (Tricholoma terreum group, may be T. moseri) between a red cedar tree and thin pines, on a well drained slope, near a small creek crossing on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, February 12, 2023 Lone Star Hiking Trail, Montgomery County, Texas, 77873, United States
Spores of grey knight mushrooms (Tricholoma terreum group, may be T. moseri) collected on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, February 12, 2023
Spores of grey knight mushrooms (Tricholoma terreum group, may be T. moseri) collected on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, February 12, 2023