Synonym: Hypoxylon archeri.
Extract from Wikipedia article: Annulohypoxylon archeri (formerly Hypoxylon archeri) is a saprophytic fungus species. It was moved from the genus Hypoxylon into the genus Annulohypoxylon erected in 2005 by Hsieh, Ju and Rogers.
Annulohypoxylon archeri is a species of fungus in the family Xylariaceae, characterized by its stromata with circular to elliptical outlines, typically 1-5 cm in diameter, and black to dark brown in color. In East and Central Texas, it is commonly found on dead branches and trunks of deciduous trees, particularly oak and elm. The fungus produces perithecia that are partially to fully immersed in the stroma, with ascospores measuring 11-15 μm in length and 5-7 μm in width. It fruits throughout the year, but is most abundant from spring to fall.
Black fungus Annulohypoxylon archeri on a stick from a hardwood tree on Wallow Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024
San Jacinto County, Texas, United States
Close-up of black fungus Annulohypoxylon archeri (Hypoxylon) on a stick on Wallow Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United States
Black crust of fungus Annulohypoxylon archeri and parasitic mushroom Silver ear (Tremella fuciformis) on a stick on Wallow Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United States
Mushroom Silver ear (Tremella fuciformis) together with fungus Annulohypoxylon archeri on a stick on Wallow Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024San Jacinto County, Texas, United States
Black crust of fungus Annulohypoxylon archeri and parasitic mushroom Silver ear (Tremella fuciformis) on a fallen oak in Lick Creek Park. College Station, Texas, May 10, 2024Racoon Run Trail, College Station, Brazos County, Texas, United StatesObservations of the fungus Annulohypoxylon archeri in East and Central Texas reveal its presence on various hardwood tree sticks and a fallen oak. On March 23, 2024, it was found on a stick on Wallow Trail in Little Thicket Nature Sanctuary, Cleveland, Texas, appearing as a black fungus with a crust-like texture. A close-up observation showed the fungus's distinctive features. Additionally, it was observed coexisting with the parasitic mushroom Silver ear (Tremella fuciformis) on the same stick. Similar observations were made on May 10, 2024, in Lick Creek Park, College Station, Texas, where the black crust of Annulohypoxylon archeri and Silver ear were found together on a fallen oak. These sightings suggest that Annulohypoxylon archeri is present in the region and can coexist with other fungal species. The fungus was consistently observed in its black crust form.
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