Synonyms: Dendrodochium compressum, Leucogloea compressa, Pleurocolla compressa.
Helicogloea compressa is a species of fungus that belongs to the family Phleogenaceae. It is characterized by its effused-reflexed to stipitate basidiocarps, with a compressed to flattened habit, and smooth, waxy to gelatinous hymenium. In East and Central Texas, Helicogloea compressa has been found growing on deciduous logs and branches, particularly on oak and maple, in moist woodland environments. The fungus typically fruits in the spring and summer months, producing yellowish to brownish basidiocarps that are 1-5 cm wide and up to 2 mm thick. Microscopic examination reveals cylindrical to clavate basidia and ellipsoid to cylindrical spores.
Leucogloea compressa (Helicogloea compressa) mushrooms on a log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, April 8, 2018
LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Close up of Leucogloea compressa (Helicogloea compressa) mushrooms on a log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, April 8, 2018LSHT Little Lake Creek Loop, Montgomery, TX 77356, USA
Leucogloea compressa (Helicogloea compressa) mushrooms on a fallen wet branch on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 5, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Young mushrooms Leucogloea compressa (Helicogloea compressa) on a fallen pine on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, December 16, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Young mushrooms Leucogloea compressa (Helicogloea compressa) on a pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, December 16, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Young mushrooms Leucogloea compressa (Helicogloea compressa) on a wet pine log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, December 16, 2018Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Mushrooms Leucogloea compressa (Helicogloea compressa) on a wet pine log in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019Big Creek Trail, Shepherd, TX 77371, USA
Fungus Leucogloea compressa (Helicogloea compressa) on rotting oak wood in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020Lone Star Hiking Trail, Coldspring, TX 77331, USA
Fungus Leucogloea compressa (Helicogloea compressa) on an oak log in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020Lone Star Hiking Trail, Coldspring, TX 77331, USA
Close up of fungus Leucogloea compressa (Helicogloea compressa) on an oak log in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020Lone Star Hiking Trail, Coldspring, TX 77331, USA
Fungus Helicogloea compressa on rotting wood near Turkey Creek South Parking Lot in Big Thicket National Preserve. Texas, June 12, 2021Gore Store Rd, Texas, USA
Fungus Helicogloea compressa on an oak(?) stump near Turkey Creek South Parking Lot in Big Thicket National Preserve. Texas, June 12, 2021Gore Store Rd, Texas, USA
Fungus Helicogloea compressa together with a small Mycena mushroom on rotting wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 28, 2021Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Close-up of fungus Helicogloea compressa on rotting wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 28, 2021Little Lake Creek Loop Trail, Montgomery County, Texas, 77873, United States
Tissues with spores(?) of mushrooms Helicogloea compressa from a thick wet pine log, collected on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest near Montgomery. Texas, January 28, 2024Observations of the fungus Helicogloea compressa in East and Central Texas show that it grows on various types of rotting wood, including logs, branches, and stumps of pine, oak, and other trees. The fungus was found in different locations, including Sam Houston National Forest and Big Thicket National Preserve, between April 2018 and January 2024. It was observed growing alone or alongside other fungi, such as Mycena mushrooms. The fungus appears to thrive in wet conditions, with many observations made on wet or rotting wood. Young mushrooms were observed in December, while mature fungi were found throughout the year, including in April, May, and January. Close-up observations revealed details of the fungus's structure and spores. Overall, Helicogloea compressa appears to be a common and widespread species in East and Central Texas, capable of growing on a variety of substrates.
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