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me mandan el material seco de Galicia (España)
Search for a discomycete genus
Franz Berger,
30-07-2021 18:42

Growing on decorticated stump of Picea (Alps, 1300 m). Black glossy ascocarps up to 0,4 mm, aggregated, with prominent margin;
Epihymenium brown, K+ olive, hymenium 40 µm, hyaline, Lugol neg, paraphyses only peripherically branched, with dark brown caps, 3 µm, hypothecium hyalin,
excipulum of radiate hyphae, outer part dark brown, Lugol + olive, asci clavate 30 x10 µm, I think unitunicate, J-, no ring structure (not opegraphoid)
with > 100 aseptate ascospores, hyaline, bacillliform, 2,5 – 3 x 1 µm,
As there are Trebouxia algae below apothecia in substrate, densely infiltrated with brown hyphae with sphaerical elements (Bispora like) , but no haustoria, it may ba also wealy lichenezed, but does not develop an organiozed thallus; but there is no fitting taxon in lichennology.
I would also be of help to let me know, if there are some ascomycete gerena with asci containing innumerous ascospores like aboce one.
Thanks for all help Franz
Hans-Otto Baral,
30-07-2021 20:26

Re : Search for a discomycete genus
This is Symbiotaphrina microtheca, earlier as Tromeropsis.
Look this paper here:
Baral, H.O.; Weber, E.; Marson, G.; Quijada, L. (2017). A new connection between wood saprobism and beetle endosymbiosis: the rarely reported saprobic discomycete Tromeropsis is congeneric with the symbiotic yeast Symbiotaphrina (Symbiotaphrinales, Xylonomycetes) and two asexual morphs misplaced in Hyphozyma. – Mycol. Progr. 17: 215–254. – doi 10.1007/s11557-017-1340-y
I would be glad to have coordinates and other data. The species is rather widely distributed but not easily found.
Hans-Otto Baral,
06-08-2021 07:51

Re : Search for a discomycete genus
Hi Franz
did you overlook my answer?
Zotto
Franz Berger,
06-08-2021 22:36

Re : Search for a discomycete genus
Vielen Dank, Zotto, hab das erst heute gesehen, weitere Daten demnächst, bin im Ausland.herzliche Grüsse
Franz
Franz
Franz Berger,
08-08-2021 11:04

Re : Search for a discomycete genus
dear Zotto!
See here the data of Symbiotaphrina on Picea wood.
Symbiotaphrina
Österreich, Niederösterreich, Bezirk Scheibbs, Göstling, Wildnisgebiet "Dürrenstein", Wanderweg von der Ybbstaler Hütte auf den Noten, 1540 m, 47°47´ 53´´N, 15°01´40´´E, auf entrindetem Fichtenstubben, leg. F.Berger 7.7.21, Herbar Be 35726.
See here the data of Symbiotaphrina on Picea wood.
Symbiotaphrina
Österreich, Niederösterreich, Bezirk Scheibbs, Göstling, Wildnisgebiet "Dürrenstein", Wanderweg von der Ybbstaler Hütte auf den Noten, 1540 m, 47°47´ 53´´N, 15°01´40´´E, auf entrindetem Fichtenstubben, leg. F.Berger 7.7.21, Herbar Be 35726.
Hans-Otto Baral,
08-08-2021 11:29

Re : Search for a discomycete genus
Danke! Aber es gibt sonst keine mikroskopischen Daten wie Sporengröße? Ah sorry, die sind ja genannt.