Common names: bitter oysterling, Luminescent Panellus.
Extract from Wikipedia article: Panellus stipticus, commonly known as the bitter oyster, the astringent panus, the luminescent panellus, or the stiptic fungus, is a species of fungus in the family Mycenaceae, and the type species of the genus Panellus. A common and widely distributed species, it is found in Asia, Australia, Europe, and North America, where it grows in groups or dense overlapping clusters on the logs, stumps, and trunks of deciduous trees, especially beech, oak, and birch. During the development of the fruit bodies, the mushrooms start out as tiny white knobs, which, over a period of one to three months, develop into fan- or kidney-shaped caps that measure up to 3 cm (1.2 in) broad. The caps are orange-yellow to brownish, and attached to the decaying wood by short stubby stalks that are connected off-center or on the side of the caps. The fungus was given its current scientific name in 1879, but has been known by many names since French mycologist Jean Bulliard first described it as Agaricus stypticus in 1783. Molecular phylogenetic analysis revealed P. stipticus to have a close genetic relationship with members of the genus Mycena.
Bitter oyster mushrooms (Panellus stipticus) in Huntsville State Park. Texas, October 27, 2018 Huntsville State Park, 565 Park Road 40 west, Huntsville, TX 77340, USA
Bitter oysterling mushrooms (Panellus stipticus) at Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, November 2, 2019 Lone Star Hiking Trail, Coldspring, TX 77331, USA
Bitter oyster mushrooms (Panellus stipticus) on a fallen oak branch in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020 Lone Star Hiking Trail, Coldspring, TX 77331, USA
Bitter oyster mushrooms (Panellus stipticus) on rotting oak in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020 Lone Star Hiking Trail, Coldspring, TX 77331, USA
Bitter oysterling mushrooms (Panellus stipticus) on Kirby Trail in Big Thicket National Preserve. Warren, Texas, October 17, 2020 Kirby Nature Trail, Kountze, TX 77625, USA
Luminescent mushrooms Bitter oysterling (Panellus stipticus) on a log collected from Watson Rare Native Plant Preserve. Warren, Texas, November 27, 2021
Luminescent gill surface of bitter oysterling mushrooms (Panellus stipticus) collected from a log in Watson Rare Native Plant Preserve. Warren, Texas, November 27, 2021
Gills of bitter oysterling mushrooms (Panellus stipticus) on an oak log in Watson Rare Native Plant Preserve. Warren, Texas, November 2, 2022 734, Red Oak Lane, Tyler County, Texas, 77664, United States
Bitter oysterling mushrooms (Panellus stipticus) on an oak log in Watson Rare Native Plant Preserve. Warren, Texas, November 2, 2022 732, Red Oak Lane, Tyler County, Texas, 77664, United States
Glowing in darkness (luminescent) bitter oysterling mushrooms (Panellus stipticus) from an oak log, collected in Watson Rare Native Plant Preserve. Warren, Texas, November 2, 2022