Synonyms: Agaricus penetrans, Dryophila penetrans, Dryophila sapinea, Flammula croceolamellata, Flammula penetrans, Flammula sapinea, Fulvidula hybrida, Fulvidula penetrans, Gymnopilus hybridus, Naucoria penetrans.
Common name: common rustgill.
Extract from Wikipedia article: Gymnopilus sapineus, commonly known as scaly rustgill, is a small and widely distributed mushroom which grows in dense clusters on dead conifer wood. It has a rusty orange spore print and a bitter taste. It is unclear at this time whether this species or its relatives contain the hallucinogen psilocybin.
Belarusian: Агнёўка яловая, Cebuano: Gymnopilus sapineus, Hungarian: Bársonykalapú lánggomba, Polish: Łysak drobnołuskowy.
Gymnopilus penetrans is a species of mushroom that grows on decaying wood, particularly oak and pine. In East and Central Texas, it typically fruits from June to November, producing medium-sized, orange-brown caps with a wavy margin and a rusty brown spore print. The stem is often curved or bent, with a ring or annulus present in some specimens. This fungus can be found in wooded areas, including forests and urban parks, where it grows solitary or in small groups on logs, stumps, and other decaying wood substrates.
Common rustgill mushrooms (Gymnopilus penetrans) on a pine log on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, November 11, 2018
Lone Star Hiking Trail, Richards, TX 77873, USA
Common rustgill mushrooms (Gymnopilus penetrans) on a pine cone on Chinquapin Trail in Huntsville State Park. Texas, November 21, 2018New Waverly, TX 77358, USA
Common rustgill mushrooms (Gymnopilus penetrans) on a pine cone on Chinquapin Trail in Huntsville State Park. Texas, November 21, 2018New Waverly, TX 77358, USA
Rustgill mushrooms Gymnopilus penetrans on Chinquapin Trail in Huntsville State Park. Texas, December 15, 2018State Park Rd 40, New Waverly, TX 77358, USA
Common rustgill mushrooms (Gymnopilus penetrans) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, December 16, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Caps of common rustgill mushrooms (Gymnopilus penetrans) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, December 16, 2018Lone Star Hiking Trail, Montgomery, TX 77356, USA
Rustgill mushrooms Gymnopilus penetrans on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, November 16, 2019Lone Star Hiking Trail, Montgomery, TX 77356, USA
Common rustgill mushrooms (Gymnopilus penetrans) on a fallen pine on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, November 18, 2019W Fork Trail, Montgomery, TX 77356, USA
Underside of common rustgill mushrooms (Gymnopilus penetrans) on a fallen pine on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, November 18, 2019W Fork Trail, Montgomery, TX 77356, USA
Common rustgill mushrooms (Gymnopilus penetrans) under a pine log in Watson Rare Native Plant Preserve. Warren, Texas, November 23, 2019263 Co Rd 4777, Warren, TX 77664, USA
Orange gills of common rustgill mushrooms (Gymnopilus penetrans) under a pine log in Watson Rare Native Plant Preserve. Warren, Texas, November 23, 2019263 Co Rd 4777, Warren, TX 77664, USA
Common rustgill mushrooms (Gymnopilus penetrans) on rotting pine wood on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020Lone Star Hiking Trail, Richards, TX 77873, USA
Common rustgill mushrooms (Gymnopilus penetrans) with side view on rotting pine wood on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020Lone Star Hiking Trail, Richards, TX 77873, USA
Cross section of common rustgill mushrooms (Gymnopilus penetrans) on rotting pine wood on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020Lone Star Hiking Trail, Richards, TX 77873, USA
Common rustgill mushrooms (Gymnopilus penetrans) in Huntsville State Park. Texas, December 18, 2020Unnamed Road, New Waverly, TX 77358, USA
Common rustgill mushrooms (Gymnopilus penetrans) on Richards Loop Trail in Sam Houston National Forest. Texas, January 9, 2021Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Rustgill mushrooms Gymnopilus penetrans or may be G. sapineus on a pine log on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, January 14, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USA
Dense cluster of rustgill mushrooms Gymnopilus penetrans or may be G. sapineus on a rotting pine log on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, January 14, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USA
Common rustgill mushrooms (Gymnopilus penetrans) on a pine log on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Common rustgill mushrooms (Gymnopilus penetrans) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, January 22, 2023Lone Star Hiking Trail, Montgomery County, Texas, United States
Spores (in KOH) of common rustgill mushrooms (Gymnopilus penetrans) (spore print orange) collected from a pine forest in Bastrop State Park a day before. Texas, January 22, 2023
Spores (in KOH) of common rustgill mushrooms (Gymnopilus penetrans) collected from a pine forest in Bastrop State Park a day before. Texas, January 22, 2023
Common rustgill mushrooms (Gymnopilus penetrans) under pines on Forest Service Road 231 near Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, November 19, 2023Forest Service Rd 231, Montgomery County, Texas, United States
Common rustgill mushrooms (Gymnopilus penetrans) on a burned pine log on Richards Loop Trail in Sam Houston National Forest. Texas, February 9, 2024Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United StatesObservations of Gymnopilus penetrans in East and Central Texas show that the fungus grows on various substrates, including pine logs, pine cones, and rotting pine wood. It has been found in several locations, such as Sam Houston National Forest, Huntsville State Park, and Bastrop State Park. The mushrooms typically appear in late fall to early winter, with observations recorded from November to February. They often grow in clusters or dense groups, and their caps display orange gills. The fungus can also be found on burned pine logs, indicating its ability to thrive in a variety of environments. Spore prints of the mushroom are orange, and microscopic examination of spores in KOH reveals their characteristic features. Overall, Gymnopilus penetrans appears to be a common and widespread species in East and Central Texas, particularly in areas with abundant pine trees.
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