Synonyms: Asterostromella effuscata, Corticium effuscatum, Terana effuscata, Vararia effuscata.
Dichostereum effuscatum is a crustose fungus that grows on decaying wood, particularly hardwoods like oak and elm. In East and Central Texas, it has been found on fallen logs, stumps, and other woody debris in moist environments, such as floodplains and woodland edges. The fungus produces resupinate to effused-reflexed fruiting bodies with a smooth to granular hymenium, ranging in color from white to cream or pale brown. Its spores are cylindrical to allantoid, measuring 7-10 μm in length. Dichostereum effuscatum is relatively common in the region, with collections reported from various counties in East and Central Texas, often during the spring and fall months when moisture levels are higher.
Corticioid (crust) fungus Dichostereum effuscatum on underside of a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 18, 2021
Lake Somerville Trailway, Somerville, TX 77879, USA
Close-up of corticioid (crust) fungus Dichostereum effuscatum on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 18, 2021Lake Somerville Trailway, Somerville, TX 77879, USA
Texture of corticioid (crust) fungus Dichostereum effuscatum on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 18, 2021Lake Somerville Trailway, Somerville, TX 77879, USA
Brown corticioid (crust) fungus Dichostereum effuscatum on a fallen oak under a stand of wild live oaks on a gentle slope at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Brown corticioid (crust) fungus Dichostereum effuscatum on bark of a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Close-up of brown corticioid (crust) fungus Dichostereum effuscatum on bark of a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Section of brown corticioid (crust) fungus Dichostereum effuscatum on bark of a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Irregular surface of brown corticioid (crust) fungus Dichostereum effuscatum on bark of a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Brown corticioid (crust) fungus Dichostereum effuscatum with white web-like fungus Sporophagomyces on bark of a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Brown corticioid (crust) mushroom Dichostereum effuscatum and white web-like parasitic fungus Sporophagomyces on bark of a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Brown corticioid (crust) mushroom Dichostereum effuscatum on a standing dead live oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Brown corticioid (crust) mushroom Dichostereum effuscatum on a fallen dried live oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Texture of brown corticioid (crust) mushroom Dichostereum effuscatum on a fallen dried live oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Thin growth of brown corticioid (crust) mushroom Dichostereum effuscatum on a fallen dried live oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Brown corticioid (crust) fungus Dichostereum effuscatum growing on bark and wood of a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Texture of brown corticioid (crust) fungus Dichostereum effuscatum on a fallen live oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Brown corticioid (crust) fungus Dichostereum effuscatum with a parasitic web-like fungus Sporophagomyces on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Parasitic web-like fungus Sporophagomyces with brown spores from a corticioid mushroom Dichostereum effuscatum on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Brown corticioid (crust) fungus Dichostereum effuscatum in bark crevices at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Fresh growth of brown corticioid (crust) fungus Dichostereum effuscatum on bark of a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023Lakeview Lane, Burleson County, Texas, 77879, United States
Hyphae of a parasitic fungus Sporophagomyces with caught spores of Dichostereum effuscatum collected at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023
Tissues with dichotomously branched hyphae of corticioid fungus Dichostereum effuscatum from an oak branch, collected at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023
Dichohypha of corticioid fungus Dichostereum effuscatum collected at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 1, 2023
Spores (in KOH) of brown corticioid fungus Dichostereum effuscatum from a fallen oak, collected a day before in Somerville Lake State Park. Texas, January 2, 2023
Spores (in lugol) of brown corticioid fungus Dichostereum effuscatum from a fallen oak, collected a day before in Somerville Lake State Park. Texas, January 2, 2023
Smooth brown velvety corticioid fungus Dichostereum effuscatum on underside of a fallen water oak in Lick Creek Park. College Station, Texas, March 16, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Light brown velvety corticioid fungus Dichostereum effuscatum together with Hymenochaete on underside of a fallen water oak in Lick Creek Park. College Station, Texas, March 16, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Brown velvety corticioid fungus Dichostereum effuscatum with slug tracks on underside of a fallen water oak in Lick Creek Park. College Station, Texas, March 16, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Slug tracks on a brown velvety corticioid fungus Dichostereum effuscatum on underside of a fallen water oak in Lick Creek Park. College Station, Texas, March 16, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Brown velvety corticioid fungus Dichostereum effuscatum growing over some old black crust fungus on underside of a fallen water oak in Lick Creek Park. College Station, Texas, March 16, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Spores of corticioid fungus Dichostereum effuscatum (in lugol, stacked image) on underside of a fallen water oak collected a day before in Lick Creek Park. College Station, Texas, March 17, 2023
Spores of corticioid fungus Dichostereum effuscatum (in lugol) collected a day before in Lick Creek Park. College Station, Texas, March 17, 2023
Spores of corticioid fungus Dichostereum effuscatum (in Melzer, stacked image) collected a day before in Lick Creek Park. College Station, Texas, March 17, 2023
Spore size 6.4 - 7 × 6 - 6.6 µm, length to width ratio Q = 1 - 1.1.
Hyphae of corticioid fungus Dichostereum effuscatum under a microscope (in Congo Red), collected a day before in Lick Creek Park. College Station, Texas, March 17, 2023
Thin brown velvety corticioid fungus Dichostereum effuscatum on underside of an oak log on Iron Bridge Trail in Lick Creek Park. College Station, Texas, April 29, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Corticioid fungus Dichostereum effuscatum on underside of an oak log on Iron Bridge Trail in Lick Creek Park. College Station, Texas, April 29, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Edge of corticioid fungus Dichostereum effuscatum on underside of an oak log on Iron Bridge Trail in Lick Creek Park. College Station, Texas, April 29, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Guttation (water droplets) of corticioid fungus Dichostereum effuscatum on underside of an oak log on Iron Bridge Trail in Lick Creek Park. College Station, Texas, April 29, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Water droplets (guttation) of corticioid fungus Dichostereum effuscatum on underside of an oak log on Iron Bridge Trail in Lick Creek Park. College Station, Texas, April 29, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Thin layer of corticioid fungus Dichostereum effuscatum on underside of an oak log on Iron Bridge Trail in Lick Creek Park. College Station, Texas, April 29, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Tissues of thin brown velvety crust fungus Dichostereum effuscatum collected in Lick Creek Park. College Station, Texas, April 29, 2023
Spores (in KOH) of corticioid fungus Dichostereum effuscatum (brown crust) collected a day before in Lick Creek Park. College Station, Texas, April 30, 2023
Spores (in lugol) of corticioid fungus Dichostereum effuscatum (brown crust) collected a day before in Lick Creek Park. College Station, Texas, April 30, 2023
Light brown corticioid fungus Dichostereum effuscatum(?) on a fallen stem of Yaupon holly in Lick Creek Park. College Station, Texas, December 20, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Light brown corticioid fungus Dichostereum effuscatum(?) on bark of a fallen stem of Yaupon holly in Lick Creek Park. College Station, Texas, December 20, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Close-up of corticioid fungus Dichostereum effuscatum(?) on a fallen stem of Yaupon holly in Lick Creek Park. College Station, Texas, December 20, 2023Iron Bridge Trail, College Station, Brazos County, Texas, United States
Spores of corticioid fungus Dichostereum effuscatum(?) from a fallen stem of Yaupon holly, collected a day before in Lick Creek Park. College Station, Texas, December 21, 2023
Corticioid fungus Dichostereum effuscatum on a fallen hardwood tree in Lick Creek Park. College Station, Texas, February 2, 2024Iron Bridge Trail, College Station, Brazos County, Texas, United States
Spores of corticioid fungus Dichostereum effuscatum collected a day before in Lick Creek Park. College Station, Texas, February 3, 2024The observations document the fungus Dichostereum effuscatum in various locations, primarily in Lick Creek Park and Somerville Lake area, from January 2023 to February 2024. The fungus was found growing on oak logs, trees, and other hardwoods, often with a brown velvety appearance. It was observed with slug tracks, old black crust fungus, and water droplets (guttation). Microscopic examinations revealed the fungus's spores and hyphae. The observations also note the presence of a parasitic fungus, Sporormiella, on Dichostereum effuscatum. The fungus was found to grow over other fungi and was collected for further study. The observations provide a detailed record of the fungus's appearance, growth habits, and microscopic characteristics, contributing to a better understanding of this species. Overall, the observations demonstrate the fungus's presence in the area and its interactions with its environment.
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