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Phomatospora hederae
Nomenclature
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Family: PhomatosporaceaeGenus: Phomatospora
SUMMARY
Anamorph: not known.
Teleomorph: stromata not clearly defined; ascomata are associated with the blackened surface of decorticated wood, but it is not clear whether these caused by the fungus. Ascomata 300-400 µm diam., sometimes strongly aggregated and emerging through common fissures in the periderm, ± globose with an elongate, gradually tapering neck 150-300 µm tall and 70-100 µm diam. at the base. Peridium thin-walled, composed of several layers of dark brown thin-walled angular cells 7-10 µm diam., the inner layers less strongly pigmented, the cells becoming somewhat elongated in the neck region. Interascal tissue of very thin-walled and sometimes evanescent unbranched paraphyses 2.5-3 µm in diam. Asci 90-110 x 4-5 µm, cylindrical with a long tapering stalk, the apex obtuse to truncate, thin-walled and not fissitunicate, with a conspicuous refractive J- apical ring ca 2 µm diam. and 1-1.5 µm thick, 8-spored. Ascospores arranged uniseriately, 6.5-8 x 3-3.5 µm, ellipsoidal to cylindric-ellipsoidal, thin-walled, hyaline, aseptate, smooth, often biguttulate, without a gelatinous sheath or appendages.