Synonyms: Diatrype gyrosa, Endothia gyrosa, Sphaeria gyrosa.
Common name: orange hobnail canker.
Extract from Wikipedia article: Endothia radicalis is a plant pathogen. It was discovered in 1916 by Stephen Bruner. He found it growing on eucalyptus, mango and avocado.
Catalan: Cryphonectria radicalis, Cebuano: Endothia radicalis.
Melogramma gyrosum is a species of fungus in the family Melanconidaceae, order Diaporthales, class Sordariomycetes, phylum Ascomycota. It is characterized by its perithecial ascomata, clavate to cylindrical asci, and fusoid to ellipsoidal ascospores. In East and Central Texas, Melogramma gyrosum has been found on dead branches and stems of various woody plants, particularly oak and hickory, often in shaded, moist areas with rich soil. The fungus typically fruits in spring and fall, producing black, immersed to partially erumpent perithecia that are 0.5-1.5 mm in diameter.
Observations of Melogramma gyrosum in East and Central Texas show that the fungus grows on dried or recently fallen oak branches and trees. It has been found in various locations, including Bee Creek Park in College Station, Washington-on-the-Brazos State Historic Site, and Sam Houston National Forest. The fungus appears as orange dots or a crust-like growth on the bark of infected trees. It has been observed on both fallen branches and standing trees, including the "Liberty Oak" in Washington-on-the-Brazos State Historic Site. In some cases, it co-occurs with other organisms, such as white fringe lichen. The fungus has been found throughout the year, from January to April, and its spores have been collected for further study. Additionally, it has been observed growing on tree roots, as seen on Kiwanis Nature Trail in College Station.
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