Pseudophacidium ?necans on Vaccinium myrtillus

22-05-2026 13:29

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Hi,I am curious to hear your opinion on this mater

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Pseudophacidium ?necans on Vaccinium myrtillus

Gernot Friebes, 22-05-2026 13:29

Hi,

I am curious to hear your opinion on this material collected on Vaccinium myrtillus. Morphologically, it seems to correspond to Pseudophacidium necans, but Vaccinium is usually the host for P. ledi.

However, my material deviates from P. ledi in the following characteristics, which all fit better for P. necans:
ascospores: 11-17 x 5.7-7.8 µm;
asci: in living state up to 180 µm, dead at least 130 µm;
inner cells of the cover layer: generally inflated, globose to pyriform (but often variable).

The last 3 photos show the presumed anamorph.

Best wishes,
Gernot