Synonyms: Collybia biformis, Marasmius biformis.
Extract from Wikipedia article: Gymnopus biformis is a North American species of agaric fungus in the family Omphalotaceae. The species was originally described by Charles Horton Peck in 1903 as Marasmius biformis. The specific epithet biformis refers to the two distinct cap shapes, which Peck noted could be either campanulate (bell-shaped) or flattened. Roy Halling transferred the fungus to Gymnopus in 1997.
Gymnopus biformis is a small to medium-sized fungus with a bell-shaped to convex cap that ranges in color from tan to brown, often with a darker center. The gills are crowded and pale yellowish-brown. It grows on deciduous logs, stumps, and woody debris, typically in clusters. In East and Central Texas, Gymnopus biformis is commonly found in wooded areas, particularly under oak, elm, and maple trees, from spring to fall, with peak fruiting occurring during the summer months.
Gymnopus mushrooms, may be Gymnopus biformis, on a nature trail in Bee Creek Park. College Station, Texas, October 22, 2017
1601 Valley View Dr, College Station, TX 77840, USA
Gymnopus biformis mushrooms on pine needles on Forest Service Road 203 on a shortcut of Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 22, 2018Forest Service Rd 203, Montgomery, TX 77356, USA
Gymnopus biformis mushrooms growing on litter and pine needles on Forest Service Road 203 on a shortcut of Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 22, 2018Forest Service Rd 203, Montgomery, TX 77356, USA
Masses of Gymnopus biformis mushrooms on pine needles on Forest Service Road 203 on a shortcut of Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 22, 2018Forest Service Rd 203, Montgomery, TX 77356, USA
Gymnopus biformis mushrooms growing on litter and pine needles near Richards Loop Trail in Sam Houston National Forest. Texas, October 2, 2021Forest Rd 203, Montgomery, TX 77356, USA
Gymnopus biformis mushrooms growing on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, October 2, 2021Forest Rd 203, Montgomery, TX 77356, USAGymnopus biformis has been observed in East and Central Texas on multiple occasions. In College Station, Texas, possible Gymnopus biformis mushrooms were found on a nature trail in Bee Creek Park on October 22, 2017. In Sam Houston National Forest, confirmed Gymnopus biformis mushrooms were found growing on pine needles and litter on Forest Service Road 203 near Little Lake Creek Loop Trail on June 22, 2018, with masses of them present. Similar observations were made in the same area on October 2, 2021, with mushrooms growing on litter, pine needles, and along Forest Service Road 203 near Richards Loop Trail. The fungus appears to thrive in areas with pine needles and litter, suggesting a preference for these substrates. Observations span multiple years and seasons, indicating a persistent presence of Gymnopus biformis in the region.
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