Notes: This is the second observation of this speciemens (for the first see MO67181).
The name Annulohypoxylon cohaerens is the current name given in index fungorum for Hypoxylon cohaerens and also to its variety var. microscoporum.
According to the french website pyrenomycetes, Hypoxylon cohaerens var. microscoporum is characterized by:
“stromata pulvinate, restricted at base, with papillate ostioles, vinaceous KOH-extractable pigments and ascospores averaging less than 8 µm long with a short faint germ slit.”
It differs from Hypoxylon cohaerens mainly by the size of the spores and by the host (Quercus or Castanea for the former and Fagus for the latter).
I am not sure about the host, but I suspect that was a Quercus tree and for sure it was not Fagus.
The characteristics of the specimen where carefully analyzed and compared with the description and photos given at the reference cited above. I present several photos illustrating these features. I think it is a dead match.
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Created: 2011-05-27 01:23:52 MSK (+0400)
Last modified: 2011-05-27 01:28:57 MSK (+0400)
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