Synonyms: Aleurodiscus oakesii, Corticium oakesii, Terana oakesii.
Common name: Smooth Patch Disease.
Acanthophysium oakesii is a species of fungus in the family Stereaceae. It is a crustose basidiomycete that grows on decaying wood. In East and Central Texas, Acanthophysium oakesii has been found on hardwood logs and stumps, typically in moist, shaded areas. The fungus produces small, warty or spiny fruiting bodies that are white to cream-colored, and its spores are cylindrical to elliptical in shape. It is considered a relatively rare species in the region, but can be locally common in suitable habitats.
Mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on a living elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
Mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on bark of a living elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
Close-up of mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on bark of a living elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
Pattern of mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on bark of a living elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
Saucer-shaped mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on bark of a living elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
Masses of saucer-shaped mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on bark of a living elm tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 11, 2020
Mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on bark of a recently dried oak near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 28, 2025
Close-up of mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on a recently dried oak near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 28, 2025
Mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) with moss on a recently dried oak near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 28, 2025
Close-up of mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) with lichen on a recently dried oak near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 28, 2025
Cup shaped fungus Acanthophysium oakesii (Aleurodiscus oakesii) with moss on a recently dried oak near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 28, 2025
Spores of mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) from bark of a recently dried oak, collected 10/28/2025 near Pole Creek in Sam Houston National Forest north from Montgomery. Texas, November 4, 2025
Saucer-shaped mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on a fallen but still living elm on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, November 30, 2025
Close-up of corticioid mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) on a fallen but still living elm on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, November 30, 2025
Spores of corticioid mushrooms Acanthophysium oakesii (Aleurodiscus oakesii) from a fallen elm, collected in Sam Houston National Forest a day before. Texas, December 1, 2025Mushrooms of Acanthophysium oakesii were observed growing on the bark of a living elm tree in Sam Houston National Forest, north of Montgomery, Texas, on September 11, 2020. The mushrooms were found in various forms, including individual saucer-shaped specimens and masses of them. They exhibited a distinct pattern on the bark, with some appearing alone and others clustered together. Close-up observations revealed detailed characteristics of the mushrooms, which were also seen growing in large numbers on the tree's bark. The species was identified as Acanthophysium oakesii, also known as Aleurodiscus oakesii. The observations suggest that this fungus is present in East and Central Texas, specifically in the Sam Houston National Forest region.
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