Extract from Wikipedia article: Heliocybe is an agaric genus closely allied to Neolentinus and the bracket fungus, Gloeophyllum, all of which cause brown rot of wood. Heliocybe sulcata, the type and sole species, is characterized by thumb-sized, tough, revivable, often dried, mushroom fruitbodies, with a tanned symmetric pileus that is radially cracked into a cartoon sun-like pattern of arranged scales and ridges, distant serrated lamellae, and a scaly central stipe. Microscopically it differs from Neolentinus by the absence of clamp connections. Like Neolentinus, it produces abundant, conspicuous pleurocystidia. Heliocybe sulcata typically fruits on decorticated, sun-dried and cracked wood, such as fence posts and rails, vineyard trellises in Europe, branches in slash areas, and semi-arid areas such on sagebrush or on naio branches in rain shadow areas of Hawaii, or in open pine forests.
Tough mushroom Heliocybe sulcata on an oak log in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, February 25, 2018 906 Ashburn Ave, College Station, TX 77840, USA
Heliocybe sulcata mushrooms on an oak log in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, February 25, 2018 906 Ashburn Ave, College Station, TX 77840, USA
Upper view of Heliocybe sulcata mushrooms on a dry bush in Hensel Park. College Station, Texas, April 14, 2018 Hensel Park DriveWay, College Station, TX 77840, USA
Side view of Heliocybe sulcata mushrooms on a dry bush in Hensel Park. College Station, Texas, April 14, 2018 Hensel Park DriveWay, College Station, TX 77840, USA
Heliocybe sulcata mushrooms on a dry bush in Hensel Park. College Station, Texas, April 14, 2018 Hensel Park DriveWay, College Station, TX 77840, USA
Lower view of Heliocybe sulcata mushrooms on a dry bush in Hensel Park. College Station, Texas, April 14, 2018 Hensel Park DriveWay, College Station, TX 77840, USA
Mushrooms Heliocybe sulcata collected in Hensel Park. College Station, Texas, April 14, 2018
Sunray sawgill mushrooms (Heliocybe sulcata) on a piece of wood in Lick Creek Park. College Station, Texas, May 23, 2022 Yaupon Loop Trail, College Station, Brazos County, Texas, United States
Sunray sawgill mushrooms (Heliocybe sulcata) on a log in Lick Creek Park. College Station, Texas, May 23, 2022 Yaupon Loop Trail, College Station, Brazos County, Texas, United States
Close-up of sunray sawgill mushrooms (Heliocybe sulcata) on a log in Lick Creek Park. College Station, Texas, May 23, 2022 Yaupon Loop Trail, College Station, Brazos County, Texas, United States
Caps of sunray sawgill mushrooms (Heliocybe sulcata) on a log in Lick Creek Park. College Station, Texas, May 23, 2022 Yaupon Loop Trail, College Station, Brazos County, Texas, United States
Spores of sunray sawgill mushrooms (Heliocybe sulcata) collected in Lick Creek Park. College Station, Texas, May 23, 2022
Spore print of sunray sawgill mushrooms (Heliocybe sulcata) collected in Lick Creek Park. College Station, Texas, May 23, 2022