Synonyms: Corticium rutilans, Hydnotrema confluens, Hydnum sublamellosum, Irpex anomalus, Irpex confluens, Polyporus rutrosus, Sistotrema ericetorum, Sistotrema membranaceum, Sistotrema sublamellosum, Trechispora ericetorum.
Common name: aromatic earthfan.
Sistotrema confluens is a crustose fungus that grows on decaying wood, typically forming small to large patches of white to cream-colored mycelium. In East and Central Texas, it has been found on various substrates including logs, stumps, and fallen branches in mixed hardwood forests, often in shaded and humid areas. The fungus produces tiny, cylindrical spores that are 4-6 μm in length, and its hyphae are characterized by the presence of clamp connections. It is a relatively common species in the region, particularly during the spring and fall months when moisture levels are higher.
Small mushrooms (Sistotrema confluens) on a steep slope of almost exposed soil excavated from a roadside ditch long time ago, under young pines and juniper trees on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021
Aromatic earthfan mushrooms (Sistotrema confluens) on a steep slope of a roadside ditch on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021
Underside of aromatic earthfan mushrooms (Sistotrema confluens) on a steep slope of a roadside ditch on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021
Side view of aromatic earthfan mushrooms (Sistotrema confluens) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021
Close-up of toothed underside of aromatic earthfan mushrooms (Sistotrema confluens) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021
Small mushrooms (Sistotrema confluens) among juniper twigs on a steep slope of a roadside ditch on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021
Close-up of a cap of aromatic earthfan mushroom (Sistotrema confluens) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 5, 2021Observations of Sistotrema confluens in East and Central Texas reveal that the fungus grows on steep slopes of roadside ditches, often under young pines and juniper trees. The mushrooms are small and can be found among juniper twigs. They have a toothed underside and an aromatic smell, earning them the name "aromatic earthfan mushrooms". The caps of the mushrooms were observed in close-up, showcasing their unique features. The fungus was spotted on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery, Texas, specifically on December 5, 2021. The observations highlight the habitat and characteristics of Sistotrema confluens in this region, providing insight into its growth patterns and appearance. The fungus appears to thrive in areas with exposed soil and young tree cover.
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