Ijuhya spec. on leaf of Vaccinium vitis-idaea

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Ijuhya spec. on leaf of Vaccinium vitis-idaea

Kees van Oorde, 25-11-2023 14:49

Very small fruiting bodies on affected leaves. Four spores per ascus. Spores with 1 sept, slightly constricted and slightly asymmetrical, approximately 17.3x4.8mu. 400X, 2.5mu per tick mark. See also https://waarneming.nl/observation/292806132/

Jacques Fournier, 25-11-2023 15:08

Re : Ijuhya spec. on leaf of Vaccinium vitis-idaea

Hi Kees,
very likely Ijuhya tetraspora.
Our paper on the genus is in open access at the website of Ascomycete.org
Cheers,
Jacques

Kees van Oorde, 29-11-2023 13:34

Re : Ijuhya spec. on leaf of Vaccinium vitis-idaea

Thanks for your comment. In the Netherlands, this species only occurs on tree bark,especially of Salix. It is very rare here. Is it also possible on leafs? With Regards, Kees.

Marian Jagers, 01-12-2023 21:41

Re : Ijuhya spec. on leaf of Vaccinium vitis-idaea

Hello Kees,

Your find is very similar to what I found before in the Netherlands. I found I. tetraspora both on wood of Cytisus scoparia and on a decayed apothecium of Hypocreopsis lichenoides.

With regards,

Marian Jagers

Kees van Oorde, 06-12-2023 16:17

Re : Ijuhya spec. on leaf of Vaccinium vitis-idaea

I find the paper Four new species of Ijuhya (Bionectriaceae) from Belgium, metropolitan France and French Guiana on: https://ascomycete.org/Portals/0/Archives/AscomyceteOrg%2009-01%2011-18.pdf It most be Ijuhya tetraspora for sure.

Thanks for the comments.

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