Synonyms: Apiocrea hyalina, Hypocrea hyalina, Hypolyssus hyalinus, Peckiella hyalina, Sphaeria hyalina.
Common name: Amanita Mold.
Extract from Wikipedia article: Hypomyces hyalinus is a species of parasitic fungi that attacks fungi of the genus Amanita. The earliest recording of this parasite was in 1822 in Salem, North Carolina, but microscopic descriptions of H. hyalinus do not appear in the literature until 1886.
Hypomyces hyalinus is a parasitic fungus that infects mushrooms, particularly species of Amanita, Boletus, and Russula. In East and Central Texas, it has been found to occur on various host species, including Amanita texensis and Boletus rubroflavus. The fungus forms a white to pale yellow, waxy to gelatinous coating over the surface of the infected mushroom, often causing deformation or distortion of the host's cap and stem. It produces perithecia that are partially to fully immersed in the stroma, with ascospores measuring 35-50 μm in length. Hypomyces hyalinus has been collected from various habitats in East and Central Texas, including wooded areas, parks, and nature reserves, typically during the summer and fall months when its host species are most active.
Fungus Hypomyces hyalinus on Amanita(?) mushroom among dry leaves in Lick Creek Park. College Station, Texas, July 26, 2014
Large Tylopilus mushroom together with Amanita covered by fungus Hypomyces hyalinus under small oaks in Lick Creek Park. College Station, Texas, June 9, 2020
Fungus Hypomyces hyalinus on Amanita mushrooms in Lick Creek Park. College Station, Texas, June 9, 2020
Dissected Amanita(?) mushrooms covered by fungus Hypomyces hyalinus in Lick Creek Park. College Station, Texas, June 9, 2020
Fungus Hypomyces hyalinus on Amanita mushrooms in Lick Creek Park. College Station, Texas, June 10, 2020
Fungus Hypomyces hyalinus on Amanita mushrooms in cross section in Lick Creek Park. College Station, Texas, June 10, 2020
Water drops on a fungus Hypomyces hyalinus in Lick Creek Park. College Station, Texas, June 10, 2020
Amanita mold fungus (Hypomyces hyalinus) in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021
Amanita mushrooms with parasitic fungus Hypomyces hyalinus in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021
Dissected Amanita mushrooms with parasitic fungus Hypomyces hyalinus in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021
Cross section of Amanita mushroom with parasitic mold fungus Hypomyces hyalinus in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021
Close-up of Amanita mold fungus (Hypomyces hyalinus) in Big Creek Scenic Area of Sam Houston National Forest near Shepherd. Texas, October 3, 2021Observations of Hypomyces hyalinus in East and Central Texas show the fungus infecting Amanita mushrooms in various locations. In Lick Creek Park, College Station, the fungus was found on Amanita mushrooms among dry leaves, under small oaks, and in cross-sections. The fungus was also observed with water drops on its surface and its texture was noted. Similar observations were made in Big Creek Scenic Area of Sam Houston National Forest near Shepherd, where the fungus was found on Amanita mushrooms, including dissected specimens and cross-sections. The fungus appears to be a parasitic mold that infects Amanita mushrooms, and its presence has been documented in both locations over several years, from 2014 to 2021. The observations provide insight into the habits and habitats of Hypomyces hyalinus in East and Central Texas.
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