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me mandan el material seco de Galicia (España)

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Yanick BOULANGERBonjourRécolté sur une brindille au fond d'un fo
Hymenoscyphus on petiole
Stefan Jakobsson,
19-08-2022 19:05
If looking at the spores alone it could fit H. fastidiosus, but the full picture is more complicated.
What should I call this one?
Stefan
Bernard Declercq,
19-08-2022 20:26

Re : Hymenoscyphus on petiole
Hi Stefan,
This is what I am used to call H. scutula var. pteridis, the non-ciliate form of H. scutula ss. str.
I don't know if these taxa have been sequenced in order to know if the second one is in need of an upgrade to species level.
Bernard
This is what I am used to call H. scutula var. pteridis, the non-ciliate form of H. scutula ss. str.
I don't know if these taxa have been sequenced in order to know if the second one is in need of an upgrade to species level.
Bernard
Stefan Jakobsson,
19-08-2022 21:13
Re : Hymenoscyphus on petiole
Thank you!
That one is said to have oil content 5 (about 80 percent) and I took this one to have lower oil content.
Hans-Otto Baral,
20-08-2022 06:52

Re : Hymenoscyphus on petiole
Difficult to comment. Spore length is a bit over H. scutula.
In my scutula folder is a sample by T. Hülsewig
"Hymenoscyphus scutula, 2.XI.2018"
on dead stems of Eupatorium sp.
This seems to me the long-spored form of H. scutula, "H. fucatoides nom. prov.", which is in my folder "fucatus aff. H-". But it could also be H. scutula. It has short setulae at the spore base.
The problem with H. scutula is, that several genetically different sequences exist in GenBank but without known morphology, so it is not even possible to say which H. scutula sequence is the typical one.
Bernard, you do not mean Feltgen's Helotium scutula f. pteridis? It is not in Index Fungorum and has spores 18-20 x 3.5-5 µm. Or you mean Hymenoscyphus pteridicola (Crouan) Kuntze which is a small-spored Cyathicula? Surely not Hymenoscyphus pteridicola Thind & Sharma which is H. macroguttatus.
Stefan Jakobsson,
20-08-2022 12:37
Re : Hymenoscyphus on petiole
I rechecked but did not find a single setula.
Bernard's key says Hymenoscyphus scutula (Pers.: Fr. )Phill. var. pteridis (Feltgen) Declercq stat. nov. ined.