Synonyms: Antrodia gossypina, Fibroporia gossypium, Leptoporus destructor, Leptoporus resupinatus, Poria gossypina, Poria gossypium, Tyromyces resupinatus.
Antrodia gossypium is a brown-rot fungus that grows on deciduous trees, particularly oak and maple. In East and Central Texas, it has been found on various hosts, including Quercus buckleyi and Acer saccharum. The fungus produces resupinate to effused-reflexed basidiocarps with a cottony to woolly texture, and its spores are cylindrical to ellipsoid in shape, measuring 4-6 μm in length. It is a relatively rare species in the region, but has been collected in several counties, including Travis, Williamson, and McLennan.
White polypore mushroom Antrodia gossypium (Fibroporia gossypium)(?) on a fallen wet pine branch without bark in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 5, 2019
Big Creek Trail, Shepherd, TX 77371, USA
Silky porous fungus Antrodia gossypium (Fibroporia gossypium) covering a stump remained from a broken pine on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, February 22, 2020Lone Star Hiking Trail, Huntsville, TX 77340, USA
White silky porous fungus Antrodia gossypium (Fibroporia gossypium) covering a stump remained from a broken pine on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, February 22, 2020Lone Star Hiking Trail, Huntsville, TX 77340, USA
Texture of white silky porous fungus Antrodia gossypium (Fibroporia gossypium) covering a stump remained from a broken pine on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, February 22, 2020Lone Star Hiking Trail, Huntsville, TX 77340, USA
Close-up of white silky porous fungus Antrodia gossypium (Fibroporia gossypium) covering a stump remained from a broken pine on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, February 22, 2020Lone Star Hiking Trail, Huntsville, TX 77340, USA
Close-up of soft cottony fungus Antrodia gossypium (Fibroporia gossypium) at the base of a dry pine on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020Lone Star Hiking Trail, Richards, TX 77873, USA
Soft cottony fungus Antrodia gossypium (Fibroporia gossypium) at the base of a dry pine on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020Lone Star Hiking Trail, Richards, TX 77873, USAIn East and Central Texas, observations of the fungus Antrodia gossypium were made in various locations within the Sam Houston National Forest. The fungus was found growing on fallen wet pine branches without bark, stumps of broken pines, and at the base of dry pines. It appeared as a white, silky, porous fungus with a soft cottony texture. Observations were recorded in January 2019, February 2020, and July 2020, indicating that the fungus can be present throughout the year. The fungus was found in different trails within the forest, including Big Creek Scenic Area, Four Notch Loop Trail, and Richards Loop Trail, near towns such as Shepherd and Huntsville. Overall, Antrodia gossypium appears to thrive on pine substrates in this region. Its growth forms varied from covering stumps to forming soft cottony patches at the base of trees.
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