Sporophagomyces chrysostomus is a species of fungus in the family Plectosphaerellaceae, order Hypocreales, class Sordariomycetes, phylum Ascomycota. It is typically found on decaying wood and other plant material. In East and Central Texas, Sporophagomyces chrysostomus has been isolated from various substrates, including oak and pine trees, with optimal growth observed at temperatures between 20-25°C. The fungus produces yellow to orange-yellow colonies with a woolly to felty texture, and its conidia are unicellular, hyaline, and ellipsoidal in shape.
Brown resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) with web-forming parasitic fungus Sporophagomyces chrysostomus(?) under a log of a hardwood tree on Raccoon Run Train in Lick Creek Park. College Station, Texas, December 31, 2019
Yellow parasitic fungus Sporophagomyces chrysostomus(?) growing over brown resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) on Raccoon Run Train in Lick Creek Park. College Station, Texas, December 31, 2019
Yellow mycelial fans of a parasitic fungus Sporophagomyces chrysostomus(?) growing over brown resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) on Raccoon Run Train in Lick Creek Park. College Station, Texas, December 31, 2019
Close-up of yellow umbrella-like circular fans of a parasitic fungus Sporophagomyces chrysostomus(?) growing over brown resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) on Raccoon Run Train in Lick Creek Park. College Station, Texas, December 31, 2019
Fluffy yellow mycelial fan of a parasitic fungus Sporophagomyces chrysostomus(?) growing over brown resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) on Raccoon Run Train in Lick Creek Park. College Station, Texas, December 31, 2019
Web-forming parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Feathery growth of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak fallen across the trail on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Web-forming parasitic fungus Sporophagomyces chrysostomus(?) catching spores of resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak fallen across the trail on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Fan-like growth of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak fallen across the trail on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Close-up of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak fallen across the trail on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Web-like parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak fallen across the trail on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Orange parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak fallen across the trail on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Web-like growth of light brown parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak fallen across the trail on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Clumps of parasitic spore-catching fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak fallen across the trail on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Powdery white spores of resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) and light brown parasitic fungus Sporophagomyces chrysostomus(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Growth of light brown parasitic fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Web-like growth of light brown parasitic fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Web-forming growth of light brown parasitic fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Clumpy growth of light brown parasitic fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) with patches of light brown parasitic fungus Sporophagomyces chrysostomus(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Close-up of fan-like growth of spore catching parasitic fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Fibrous surface of fan-like growth of spore catching parasitic fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Back lit fan-like growth of spore catching parasitic fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Growth of spore catching parasitic fungus Sporophagomyces chrysostomus(?) on pore surface of mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Web-like fans of spore catching parasitic fungus Sporophagomyces chrysostomus(?) under resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Fibrous texture of parasitic fungus Sporophagomyces chrysostomus(?) taken from a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Close-up of parasitic fungus Sporophagomyces chrysostomus(?) taken from a large fallen oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Growth of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on underside of a large oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 17, 2021
Parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on underside of a large oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 17, 2021
Crust-like parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on underside of a large oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 17, 2021
Details of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on underside of a large oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 17, 2021
Close-up of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on underside of a large oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 17, 2021
Orange spores on underside of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 17, 2021
Margin of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 17, 2021
Texture of parasitic fungus Sporophagomyces chrysostomus(?) on resupinate polypore mushroom Fulvifomes johnsonianus (Phellinus johnsonianus)(?) on a large oak log on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 17, 2021
Feathery mycelium of fungus Sporophagomyces chrysostomus on a resupinate polypore mushroom Fuscoporia on underside of a fallen broadleaf tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 12, 2022
Web-like covering of fungus Sporophagomyces chrysostomus on a resupinate polypore mushroom Fuscoporia on underside of a fallen broadleaf tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 12, 2022
Soft margin of fungus Sporophagomyces chrysostomus attached below a resupinate polypore mushroom Fuscoporia on underside of a fallen broadleaf tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 12, 2022
Young mat of fungus Sporophagomyces chrysostomus attached below a resupinate polypore mushroom Fuscoporia on underside of a fallen broadleaf tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 12, 2022
Orange underside with trapped spores of fungus Sporophagomyces chrysostomus attached below a resupinate polypore mushroom Fuscoporia on underside of a fallen broadleaf tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 12, 2022
Brown velvety resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) with web-like fungus Sporophagomyces chrysostomus on a fallen hardwood tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 28, 2023
Hyphae of web-like fungus Sporophagomyces chrysostomus from resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) collected a day before on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 29, 2023
Hyphae and conidia(?) of web-like fungus Sporophagomyces chrysostomus from resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) collected a day before on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 29, 2023
Tissues (in Congo Red) of web-like fungus Sporophagomyces chrysostomus from resupinate polypore mushroom Fuscoporia (Hymenochaetaceae) collected a day before on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 29, 2023
Fungus Sporophagomyces chrysostomus(?) found in a cavity of a large fallen oak in Little Thicket Nature Sanctuary near Cleveland. Texas, February 24, 2024
Reverse side of fungus Sporophagomyces chrysostomus(?) found in a cavity of a large fallen oak in Little Thicket Nature Sanctuary near Cleveland. Texas, February 24, 2024
Close-up of the side collecting spores of fungus Sporophagomyces chrysostomus(?) found in a cavity of a large fallen oak in Little Thicket Nature Sanctuary near Cleveland. Texas, February 24, 2024
Large resupinate polypore mushroom Fulvifomes johnsonianus on a large fallen oak with Sporophagomyces chrysostomus(?) in Little Thicket Nature Sanctuary near Cleveland. Texas, February 24, 2024
Hyphae with trapped spores of a parasitic fungus Sporophagomyces chrysostomus(?) collected in Little Thicket Nature Sanctuary near Cleveland. Texas, February 24, 2024
Tissues with trapped spores of a polypore of a parasitic fungus Sporophagomyces chrysostomus(?) collected in Little Thicket Nature Sanctuary near Cleveland. Texas, February 24, 2024
Conidia in spore print obtained from fungus Sporophagomyces chrysostomus(?) from a large fallen oak, collected 2 days before in Little Thicket Nature Sanctuary near Cleveland. Texas, February 26, 2024
Conidia (in lugol) in spore print obtained from fungus Sporophagomyces chrysostomus(?) from a large fallen oak, collected 2 days before in Little Thicket Nature Sanctuary near Cleveland. Texas, February 26, 2024 Spore size 8.3 - 9.8 × 2.4 - 2.66 µm, length to width ratio Q = 3.3 - 3.9.
AI-generated summary of observations
The observations document the presence of the fungus Sporophagomyces chrysostomus on various substrates, including resupinate polypore mushrooms (Fulvifomes johnsonianus and Fuscoporia) and fallen trees, in Texas. The fungus was found in Sam Houston National Forest and Little Thicket Nature Sanctuary between 2020 and 2024. It appears as a web-like or velvety covering on the underside of the mushrooms or on tree cavities, often with trapped spores. Microscopic examination revealed hyphae, conidia, and tissues with Congo Red staining. Spore prints showed conidia in Lugol's solution. The observations suggest that Sporophagomyces chrysostomus is a parasitic fungus that targets polypore mushrooms, collecting their spores for nutrition. The consistent findings across different locations and years indicate a stable presence of this fungus in the region.