Synonyms: Humaria arenosa, Lachnea arenosa, Peziza arenosa, Sarcosphaera arenosa, Scutellinia arenosa, Sepultaria arenosa.
Common name: mountain cup.
Geopora arenosa is a species of truffle-like fungus in the family Pyronemataceae. It produces subterranean to partially exposed, irregularly shaped fruiting bodies that are 2-6 cm in diameter, with a smooth, warty, or verrucose exterior and a whitish to pinkish interior. In East and Central Texas, Geopora arenosa typically fruits from December to April, often in association with oak, elm, and hackberry trees, and can be found in a variety of habitats, including woodland edges, savannas, and along streams.
Cedar cup mushroom (Geopora arenosa) or may be G. arenicola, G. sepulta among moss on Closed Trail in Lick Creek Park. College Station, Texas, May 13, 2024
Iron Bridge Trail, College Station, Brazos County, Texas, United States
Side view of a cedar cup mushroom (Geopora arenosa) or may be G. arenicola, G. sepulta among moss on Closed Trail in Lick Creek Park. College Station, Texas, May 13, 2024Iron Bridge Trail, College Station, Brazos County, Texas, United States
Ascomycete mushrooms Geopora arenosa(?) or may be G. arenicola, G. sepulta under juniper on Closed Trail in Lick Creek Park. College Station, Texas, May 13, 2024Iron Bridge Trail, College Station, Brazos County, Texas, United States
Top view of Ascomycete mushroom Geopora arenosa(?) on Closed Trail in Lick Creek Park. College Station, Texas, May 13, 2024Iron Bridge Trail, College Station, Brazos County, Texas, United States
Cup fungi Geopora arenosa(?) or may be G. arenicola, G. sepulta under juniper on Closed Trail in Lick Creek Park. College Station, Texas, May 13, 2024Iron Bridge Trail, College Station, Brazos County, Texas, United States
Black hair of Ascomycete mushrooms Geopora arenosa(?) under a microscope collected in Lick Creek Park. College Station, Texas, May 13, 2024
Asci with spores of Ascomycete mushrooms Geopora arenosa(?) at low magnification collected in Lick Creek Park. College Station, Texas, May 13, 2024
Asci with spores of Ascomycete mushrooms Geopora arenosa(?) under a microscope with x100 objective collected in Lick Creek Park. College Station, Texas, May 13, 2024
Asci and paraphyses of Ascomycete mushrooms Geopora arenosa(?) collected in Lick Creek Park. College Station, Texas, May 13, 2024
Hyphae and spores of Ascomycete mushrooms Geopora arenosa(?) collected in Lick Creek Park. College Station, Texas, May 13, 2024
Spores (in lugol) of Ascomycete mushroom Geopora arenosa(?) collected in Lick Creek Park. College Station, Texas, May 13, 2024Observations of Geopora arenosa in East and Central Texas were made on Closed Trail in Lick Creek Park, College Station. The fungus was found among moss under juniper trees on May 13, 2024. Macroscopic views showed cup-shaped mushrooms, while microscopic examination revealed black hair, asci with spores, and hyphae. Spores were observed with lugol staining. The observations suggest that Geopora arenosa may be accompanied by similar species such as G. arenicola or G. sepulta. Microscopic features including asci, paraphyses, and hyphae were documented at various magnifications, providing detailed information about the fungus's morphology. The findings contribute to the understanding of Geopora arenosa in its natural habitat in East and Central Texas. Multiple images captured the fungus from different angles, showcasing its characteristics.
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