Synonyms: Agaricus madreporeus, Agaricus myomyces, Agaricus pullus, Agaricus terreus, Cortinellus terreus, Gymnopus myomyces, Gyrophila terrea, Tricholoma bisporigerum, Tricholoma myomyces.
Common name: grey knight.
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.
Basque: Ziza arre, Belarusian: Сівуха (грыб), Catalan: Fredolic, Estonian: Maaheinik, Finnish: Harmaavalmuska, Galician: Ratiño, German: Gemeiner Erd-Ritterling, Hungarian: Fenyő-pereszke, Icelandic: Moldskjalda, Lithuanian: Raibasis baltikas, Persian: قارچ کلاهخاکستری, Polish: Gąska ziemistoblaszkowa, Russian: Рядовка землистая, Ukrainian: Рядовка наземна, Welsh: Marchog llwyd.
Tricholoma terreum is a medium-sized, terrestrial fungus with a grayish-brown to yellowish-brown cap, often convex or bell-shaped, and 3-8 cm in diameter. The gills are white to pale yellow, and the stem is similar in color to the cap. In East and Central Texas, Tricholoma terreum typically fruits from September to November, often in association with oak and pine trees. It can be found in a variety of habitats, including woodlands, forests, and urban areas with tree cover. The fungus is considered edible, but not highly prized for its flavor or texture.
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, 2021Lone 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, 2021Lone 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, 2021Lone 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, 2021Lone 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, 2021Lone 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, 2021Lone 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, 2023Lone 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, 2023Lone 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, 2023Observations of the fungus Tricholoma terreum in East and Central Texas were made on the Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. The mushrooms were found between a red cedar tree and thin pines on a well-drained slope near a small creek crossing. They were observed on January 20, 2021, and February 12, 2023, with varying levels of moisture, from partially dried to mature and dried. The observations included views from the side, close-up, and underside, as well as cross-sections and spore collections. The mushrooms were found in a consistent habitat, suggesting a specific association with the surrounding trees and soil conditions. The spores were collected and observed on February 12, 2023, providing further insight into the species' characteristics.
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