Synonyms: Fomes sessilis, Polyporus sessilis.
Extract from Wikipedia article: Ganoderma sessile is a species of polypore fungus in the Ganodermataceae family. This wood decay fungus is found very commonly in Eastern North America, and is associated with declining or dead hardwoods. There has been a lot of taxonomic confusion with this fungus since its circumscription in 1902.
Ganoderma sessile is a perennial, bracket-shaped fungus that grows on trees, particularly oak and pine. In East and Central Texas, it is commonly found on living and dead hardwoods, often at the base of the trunk or on stumps. The cap is typically 2-10 cm wide, reddish-brown to dark brown, and has a glossy, varnished appearance. The pores on the underside are white to light brown and decurrent. It fruits throughout the year, but primarily from spring to fall. The fungus is known to cause heart rot in trees, leading to decay and structural weakness.
Bracket, or shelf fungus Ganoderma sessile on a base of a tree in Lick Creek Park. College Station, Texas, November 16, 2013
Polypore fungus Ganoderma sessile on a stump on a lawn in Bee Creek Park. College Station, Texas, November 3, 2017
Polypore mushroom Ganoderma sessile on a stump in Lemontree Park. College Station, Texas, November 8, 2017
Polypore mushroom Ganoderma sessile on buried wood in Lemontree Park. College Station, Texas, November 18, 2017
Polypore mushroom Ganoderma sessile on a lawn in Lemontree Park. College Station, Texas, November 18, 2017
Caps of polypore mushrooms Ganoderma sessile in Lemontree Park. College Station, Texas, November 18, 2017
Young polypore mushroom Ganoderma sessile in Lick Creek Park. College Station, Texas, April 30, 2018
Bracket mushroom Ganoderma sessile at the base of a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, October 28, 2018
Polypore mushrooms Ganoderma sessile in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 2, 2018
Polypore mushroom Ganoderma sessile on an oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Pore surface of a mushroom Ganoderma sessile from an oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Young polypore mushrooms Ganoderma sessile on a rotting oak stump on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Caps of young polypore mushrooms Ganoderma sessile on a rotting oak stump on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Texture of a young polypore mushroom Ganoderma sessile on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Underside of young polypore mushrooms Ganoderma sessile on a rotting oak stump on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Pore surface of a young polypore mushroom Ganoderma sessile on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Shiny cap surface of young polypore mushrooms Ganoderma sessile on a rotting oak stump on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Underside of a young polypore mushroom Ganoderma sessile on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 26, 2019
Polypore mushrooms Ganoderma sessile on an oak stump on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 16, 2019
Bracket polypore mushrooms Ganoderma sessile on an oak stump on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 16, 2019
Shelves of polypore mushrooms Ganoderma sessile on an oak stump on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 16, 2019
Polypore mushrooms Ganoderma sessile on a fallen oak on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, November 24, 2019
Polypore mushroom Ganoderma sessile at a base of a living tree at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 21, 2019
Pore surface of a mushroom Ganoderma sessile at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 21, 2019
Polypore mushrooms Ganoderma sessile at the base of a planted pin oak (Quercus palustris) in Bee Creek Park. College Station, Texas, December 31, 2019
Emerging polypore mushroom Ganoderma sessile at the base of a planted pin oak (Quercus palustris) in Bee Creek Park. College Station, Texas, December 31, 2019
Polypore mushrooms Ganoderma sessile on an oak stump on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 18, 2021
Polypore mushrooms Ganoderma sessile at the base of a dry tree in wet area in Lick Creek Park. College Station, Texas, July 20, 2021
Polypore mushrooms Ganoderma sessile at the base of a dry tree near a creek on Kiwanis Nature Trail. College Station, Texas, October 12, 2021
Mature polypore mushrooms Ganoderma sessile at the base of a tree on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, October 16, 2021
Mature polypore mushrooms Ganoderma sessile at the base of a tree with caps covered by rusty pores on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, October 16, 2021
Young polypore mushroom Ganoderma sessile at the base of an oak in Bee Creek Park. College Station, Texas, October 25, 2021
Immature polypore mushroom Ganoderma sessile(?) on a low stump under powerlines in Lake Bryan Park. Bryan, Texas, November 10, 2021
Cross section of immature polypore mushroom Ganoderma sessile(?) on a low stump under powerlines in Lake Bryan Park. Bryan, Texas, November 10, 2021
Immature bracket polypore mushroom Ganoderma sessile at the base of an oak in Bee Crrek Park. College Station, Texas, November 19, 2021
Underside of immature bracket polypore mushroom Ganoderma sessile at the base of an oak in Bee Crrek Park. College Station, Texas, November 19, 2021
Cross section of immature bracket polypore mushroom Ganoderma sessile at the base of an oak in Bee Crrek Park. College Station, Texas, November 19, 2021
Bracket polypore mushrooms Ganoderma sessile at the base of a large dried oak near parking at County Road 125 on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 30, 2021
Upper view of bracket polypore mushrooms Ganoderma sessile at the base of a large dried oak near parking at County Road 125 on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 30, 2021
Young caps of bracket polypore mushrooms Ganoderma sessile at the base of a large dried oak near parking at County Road 125 on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 30, 2021
Brown glossy caps of bracket polypore mushrooms Ganoderma sessile at the base of a large dried oak near parking at County Road 125 on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 30, 2021
Malformed caps of bracket polypore mushrooms Ganoderma sessile at the base of a large dried oak near parking at County Road 125 on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, December 30, 2021
Young polypore mushrooms Ganoderma sessile on rotting wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 17, 2022
Bracket polypore mushrooms Ganoderma sessile on rotting wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 17, 2022
Underside of bracket polypore mushroom Ganoderma sessile on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 17, 2022
Reishi-like polypore mushrooms Ganoderma sessile on a hardwood log on Caney Creek Trail (Little Lake Creek Loop Trail) east from Trailhead No. 4 in Sam Houston National Forest north from Montgomery. Texas, November 25, 2023
Polypore mushrooms Ganoderma sessile on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, September 13, 2024
Polypore mushrooms Ganoderma sessile when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 13, 2024
Caps of polypore mushrooms Ganoderma sessile both in natural light and under 365 nm ultraviolet (UV-A) blacklight collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 13, 2024
Underside of a polypore mushroom Ganoderma sessile when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 13, 2024The observations document the growth and appearance of Ganoderma sessile polypore mushrooms in various locations in Texas, primarily in Sam Houston National Forest. The mushrooms were found on rotting wood, logs, and at the base of oak trees. They were observed over several years, from 2021 to 2024, during different seasons. The observations note the varying colors, shapes, and sizes of the mushrooms, as well as their reaction to ultraviolet (UV-A) blacklight. Some specimens exhibited a glossy brown cap, while others had malformed or immature caps. The underside of the mushrooms was also observed, showing rusty pores. The observations provide a detailed record of the growth habits and characteristics of Ganoderma sessile in its natural habitat. Overall, the documentation suggests that the species is common in the area and can be found in various forms throughout the year.
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